CN111199743B - Audio coding format determining method and device, storage medium and electronic equipment - Google Patents

Abstract

The embodiment of the application discloses a method, a device, a storage medium and electronic equipment for determining an audio coding format, wherein the method comprises the following steps: acquiring a first audio coding format supported by Bluetooth audio equipment under an audio coding protocol and a first coding parameter corresponding to the first audio coding format, and when the first audio coding format is not matched with a second audio coding format supported by the terminal under the audio coding protocol and/or the first coding parameter is not matched with a second audio coding parameter corresponding to the second audio coding format, switching the second audio coding format into a default audio coding format under the audio coding protocol, and controlling to perform audio coding by adopting the default audio coding format. By adopting the embodiment of the application, the stability of Bluetooth audio connection between the terminal and the Bluetooth audio equipment can be improved, and the normal use of the Bluetooth audio function is ensured.

Description

Audio coding format determination method, device, storage medium and electronic equipment

technical field

The present application relates to the field of computer technology, and in particular to a method, device, storage medium and electronic equipment for determining an audio coding format.

Background technique

Bluetooth communication technology, as a short-distance wireless communication method, is widely used in terminals and Bluetooth audio devices. The terminal (such as a smart phone) establishes a Bluetooth audio connection with a Bluetooth audio device (such as a Bluetooth speaker, a Bluetooth headset) through an audio transmission protocol, so that audio data can be played on the Bluetooth audio device.

At present, before using the Bluetooth communication technology for communication, it is necessary to determine the audio encoding format between the two devices. Once the bluetooth audio device is in the same audio encoding format as determined by priority on the terminal, an audio connection is established. When the two audio encoding parameters (such as bit rate, sampling rate, etc.) do not match, the audio connection will be interrupted, so that the Bluetooth audio data sent by the terminal cannot be played.

Contents of the invention

Embodiments of the present application provide a method, device, storage medium and electronic equipment for determining an audio encoding format, which can improve the stability of a Bluetooth audio connection between a terminal and a Bluetooth audio device, and ensure normal use of the Bluetooth audio function. Described technical scheme is as follows:

In the first aspect, the embodiment of the present application provides a method for determining an audio coding format, the method comprising:

Obtain the first audio encoding format supported by the Bluetooth audio device under the audio encoding protocol and the first encoding parameters corresponding to the first audio encoding format;

Determine that the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter corresponds to the second audio encoding format corresponding to the second audio encoding format The two audio encoding parameters do not match, switching the second audio encoding format to the default audio encoding format under the audio encoding protocol;

Controls the use of the default audio encoding format for audio encoding.

In the second aspect, the embodiment of the present application provides an audio coding format determining device, the device comprising:

A format parameter acquisition module, configured to acquire the first audio encoding format supported by the Bluetooth audio device under the audio encoding protocol and the first encoding parameter corresponding to the first audio encoding format;

A coding format switching module, used for the first audio coding format not matching the second audio coding format supported by the terminal under the audio coding protocol, and/or the first coding parameter not matching the second audio coding format The second audio encoding parameter corresponding to the audio encoding format does not match, and the second audio encoding format is switched to the default audio encoding format under the audio encoding protocol;

The audio coding control module is used to control the audio coding using the default audio coding format. In a third aspect, an embodiment of the present application provides a computer storage medium, where a plurality of instructions are stored in the computer storage medium, and the instructions are adapted to be loaded by a processor and execute the above method steps.

In a fourth aspect, an embodiment of the present application provides an electronic device, which may include: a processor and a memory; wherein, the memory stores a computer program, and the computer program is adapted to be loaded by the processor and execute the above-mentioned method steps .

The beneficial effects brought by the technical solutions provided by some embodiments of the present application at least include:

In one or more embodiments of the present application, the terminal obtains the first audio coding format supported by the Bluetooth audio device under the audio coding protocol and the first coding parameter corresponding to the first audio coding format, and in the first The audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter does not match the second audio encoding parameter corresponding to the second audio encoding format When matching, switch the second audio encoding format to the default audio encoding format supported by both the terminal and the Bluetooth audio device under the audio encoding protocol, and perform audio encoding in the default audio encoding format. It can avoid the problem that the Bluetooth audio connection is interrupted when the Bluetooth audio formats supported by the terminal and the Bluetooth audio device are the same but the corresponding audio encoding parameters do not match, and the stability of the Bluetooth audio connection between the terminal and the Bluetooth audio device is improved, thereby ensuring The Bluetooth audio function works normally.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic flowchart of a method for determining an audio coding format provided in an embodiment of the present application;

FIG. 2 is a schematic flowchart of another audio coding format determination method provided by the embodiment of the present application;

FIG. 3 is a terminal Bluetooth setting interface involved in a method for determining an audio encoding format provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of terminal encoding format selection involved in a method for determining an audio encoding format provided in an embodiment of the present application;

FIG. 5 is a schematic diagram of a scene architecture for determining an audio coding format provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of an audio coding format determination device provided in an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a format parameter acquisition module provided by an embodiment of the present application;

Fig. 8 is a schematic structural diagram of an encoding format switching module provided by an embodiment of the present application

FIG. 9 is a schematic structural diagram of another device for determining an audio encoding format provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

In the description of the present application, it should be understood that the terms "first", "second" and so on are used for descriptive purposes only, and should not be understood as indicating or implying relative importance. In the description of the present application, it should be noted that, unless otherwise specified and limited, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or devices. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations. In addition, in the description of the present application, unless otherwise specified, "plurality" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character "/" generally indicates that the contextual objects are an "or" relationship.

The present application will be described in detail below in conjunction with specific embodiments.

In one embodiment, as shown in FIG. 1 , a method for determining an audio coding format is proposed. The method can be implemented relying on a computer program and can run on a device for determining an audio coding format based on the von Neumann system. The computer program can be integrated in the application, or run as an independent utility application.

Specifically, the method for determining the audio encoding format includes:

Step 101: Obtain a first audio encoding format supported by a Bluetooth audio device under an audio encoding protocol and a first encoding parameter corresponding to the first audio encoding format.

The audio encoding protocol can be understood as an audio encoding developed by the Bluetooth Special Interest Group (Special Interest Group, SIG) for the Bluetooth audio sender (Source) and the Bluetooth audio receiver (Sink) to transmit audio data through a Bluetooth connection agreement. The audio encoding protocol can be the Bluetooth Advanced Audio Distribution Profile (Advanced Audio Distribution Profile, A2DP). In the A2DP protocol, the Bluetooth audio sending end (Source) and the Bluetooth audio receiving end (Sink) can realize high-quality audio through the Bluetooth A2DP connection. transmission of data.

Among them, the A2DP protocol stipulates that the Bluetooth audio transmitter and the Bluetooth audio receiver support audio codecs. Among them, the SBC (Sub-band Coding) audio encoding format is mandatory, and other audio encoding formats are optional. Such as MP3 (Moving Picture Experts Group Audio Layer III), AAC (Advanced Audio Coding), WMA (Windows Media Audio) and ATRAC (Adaptive Transform Acoustic Coding), and so on.

The first audio encoding format can be understood as an audio encoding format supported by the Bluetooth audio device under the audio encoding protocol, such as at least one of the formats such as MP3 audio encoding format, AAC audio encoding format, and WMA audio encoding format.

The first encoding parameter corresponds to the first audio encoding format. It can be understood that the first audio encoding format supported by the Bluetooth audio device is a working state parameter when encoding audio data. For example, the first encoding parameter can be At least one of coding parameters such as sampling rate, signal-to-noise ratio, total harmonic distortion, and bit rate.

When the terminal establishes a Bluetooth connection with a Bluetooth audio device or in a scene where the Bluetooth audio connection is to be used for audio playback, the terminal can obtain Bluetooth audio information of the Bluetooth audio device, specifically to obtain the audio coding supported by the Bluetooth audio device based on the audio coding protocol format and the first encoding parameter corresponding to the audio encoding format.

In a specific implementation scenario, the first audio encoding format of the Bluetooth audio device acquired by the terminal and the first encoding parameters corresponding to the first audio encoding format may be actively pushed by the Bluetooth audio device, specifically, the terminal communicates with After the Bluetooth audio device establishes the Bluetooth connection, the Bluetooth audio device can monitor that the Bluetooth connection is successfully established, and the Bluetooth audio device can obtain all the audio encoding information supported by the local end under the audio encoding protocol (such as the A2DP protocol) - the first audio encoding format and the first encoding parameters corresponding to the first audio encoding format, such as obtaining the pre-set audio encoding information in the local storage space of the Bluetooth audio device, and then the Bluetooth audio device connects the audio encoding information to the terminal through the Bluetooth- The first audio encoding format and the first encoding parameters corresponding to the first audio encoding format are pushed to the terminal, and at this time, the terminal can acquire the first audio encoding format and the first encoding parameters by receiving the audio encoding information.

In a specific implementation scenario, the terminal acts as the Source end, and the Bluetooth audio device acts as the Sink end; the terminal can usually pre-define a target audio encoding format, and the target audio encoding format can be understood as the terminal establishing Bluetooth audio with any Bluetooth audio device. The connection preferentially uses the target audio encoding format to perform audio encoding on local audio data or online audio data. In practical applications, a higher-quality high-quality encoding method is usually selected according to the audio quality corresponding to the audio encoding format, such as determining the target The audio coding format is a high-quality high-quality coding method-AAC audio coding format. In the embodiment of this application, in order to avoid the problem that the terminal does not match the audio encoding format of the Bluetooth audio device and the audio encoding parameters corresponding to the audio encoding format, resulting in the disconnection of the Bluetooth audio connection (such as the A2DP connection) or the failure of audio playback, the terminal can directly Determine whether the Bluetooth audio device supports the target audio encoding format and the target audio encoding parameters corresponding to the target audio encoding format, as follows:

One way may be to directly obtain the target audio coding format and the target audio coding parameters supported by the Bluetooth audio device from the Bluetooth audio device. For example, the Bluetooth audio device supports the AAC audio encoding format and other three audio encoding formats A, B, and C. The terminal can directly send to the Bluetooth audio device to obtain the target audio encoding format (AAC audio encoding format), and the audio encoding format supported by the Bluetooth audio device. A request for target audio encoding parameters, and the Bluetooth audio device feeds back the first audio encoding format (ie, the AAC audio encoding format) and the first encoding parameters (ie, the audio encoding parameters corresponding to the AAC audio encoding format) based on the request

Then it is judged whether the target audio coding parameters supported by the terminal match the target audio coding parameters supported by the Bluetooth audio device. It should be noted that, in an actual application scenario, when the terminal and the Bluetooth audio device support the same audio coding format, the audio coding parameters corresponding to the "same audio coding format" supported by the terminal are the same as the "same audio coding format" supported by the Bluetooth audio device. The audio encoding parameters corresponding to "Audio Encoding Format" do not match. For example: the terminal and the Bluetooth audio device support the target audio encoding format-AAC encoding format at the same time. Taking the audio encoding parameters as the bit rate and sampling rate as an example, the bit rate supported by the terminal is A and the sampling rate is B; the Bluetooth audio device supports The bit rate is a, and the sampling rate is B; at this time, the audio encoding parameters corresponding to the "same AAC encoding format" supported by the terminal and the audio encoding parameters corresponding to the "same AAC encoding format" supported by the Bluetooth audio device are different. match;

Step 102: Determine that the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter does not match the second audio encoding format The corresponding second audio coding parameters do not match, and the second audio coding format is switched to the default audio coding format under the audio coding protocol.

The second audio coding format can be understood as an audio coding format supported by the terminal under the audio coding protocol, such as at least one of MP3 audio coding format, AAC audio coding format, WMA audio coding format, etc., usually the first The second audio encoding format is different from the default audio encoding format.

The second encoding parameter corresponds to the second audio encoding format, which can be understood as the working state parameter of the second audio encoding format supported by the terminal when encoding audio data. For example, the first encoding parameter can be understood as One or more of coding parameters such as sampling rate, signal-to-noise ratio, total harmonic distortion, and bit rate.

The default audio encoding format is usually an audio encoding format supported by all or most Bluetooth audio devices. It can be understood that when the terminal audio encoding format is usually encoded in the default audio encoding format, the Bluetooth audio device can usually be based on the default audio encoding format. Encoding format for audio encoding and decoding; in practical applications, it is preferable to use the default audio encoding format as the audio encoding format agreed in the audio encoding protocol. The audio encoding format must be selected by the Bluetooth audio transmitter and the Bluetooth audio receiver to support audio encoding and decoding, such as the A2DP protocol It stipulates the support of the Bluetooth audio transmitter and the Bluetooth audio receiver to the audio codec, wherein the SBC (Sub-band Coding) audio coding format is mandatory, and the default audio coding format can be the SBC audio coding format. It should be noted that when the terminal and the Bluetooth audio device encode and decode the audio book under the A2DP protocol in the SBC audio coding format, both the terminal and the Bluetooth audio device usually support the audio coding parameters corresponding to the SBC audio coding format.

Specifically, taking the audio coding protocol as the A2DP protocol as an example, the audio coding of the A2DP protocol usually includes Apt-X audio coding format, SBC audio coding format, AAC audio coding format, LDAC audio coding format, usually Apt-X audio coding format, The AAC audio coding format, the LDAC audio coding format is higher in audio quality than the SBC audio coding format, and usually the second audio coding format of the terminal can be the AAC audio coding format. It can be understood that the terminal is using a certain application program (such as A certain music program) or when establishing a Bluetooth connection with a Bluetooth audio device, the terminal will use the AAC audio encoding format as the preferred format.

Specifically, after the terminal acquires the first audio encoding format and the first encoding parameters supported by the Bluetooth audio device under the audio encoding protocol, the terminal can acquire the second audio encoding format and the second encoding parameter supported under the audio encoding protocol. Audio coding format, for example, usually the second audio coding format supported by the terminal and the second audio coding format are stored in the audio coding configuration file, and the terminal can obtain the first audio coding format supported by the audio coding protocol in the local audio coding configuration file. Two audio encoding formats and second encoding parameters. Then judge whether the first audio encoding format matches the second audio encoding format, and whether the first encoding parameter matches the second audio encoding parameter corresponding to the second audio encoding format.

In a specific implementation scenario, the second audio encoding format supported by the terminal is the AAC audio encoding format; the second audio encoding parameters are: bit rate 165kbps, sampling rate: 48khz; the first audio encoding format supported by the Bluetooth audio device is AAC Audio encoding format; the first audio encoding parameters are: bit rate 128kbps, sampling rate: 48khz or 44.1khz, the first audio encoding format and the second audio encoding format are compared to the same audio encoding format (AAC audio encoding format) , the sampling rate of the first encoding parameter is consistent with that of the second audio encoding parameter, and the bit rate of the first encoding parameter is inconsistent with that of the second audio encoding parameter; at this time, the terminal determines that the first audio encoding format is consistent with the The second audio encoding format supported under the audio encoding protocol matches but the first encoding parameter does not match the second audio encoding parameter corresponding to the second audio encoding format.

Specifically, when the terminal determines that the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter does not match the second audio encoding format After the second audio encoding parameters corresponding to the encoding format do not match, the audio encoding format currently encoded by the terminal is switched from the second audio encoding format (such as the AAC audio encoding format) to the default audio encoding format under the audio encoding protocol (such as SBC audio encoding format under the A2DP protocol), so that when the user turns on the audio playback function on the terminal, the default audio encoding format is used to encode local or online audio data.

Wherein, when the terminal determines that the first audio encoding format matches the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter matches the second audio encoding format After the corresponding second audio encoding parameters are matched, the terminal maintains the currently encoded audio encoding format-the second audio encoding format (such as the AAC audio encoding format). It can be understood that because the currently encoded audio encoding format-the second audio encoding format (such as the AAC audio encoding format) is compatible with that supported by the Bluetooth audio device, and at this time, the terminal does not need to switch the second audio encoding format.

Step 103: Controlling the use of the default audio encoding format for audio encoding.

Specifically, by performing the above steps, the terminal determines that the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter does not match the After the second audio encoding parameters corresponding to the second audio encoding format do not match, determine that the default audio encoding format is under the audio encoding protocol (such as the A2DP protocol) from the second audio format supported by the terminal and the default audio encoding format The current audio encoding format for . Then register the SEP (Stream End Point) of the default audio coding format under the audio coding protocol (such as the A2DP protocol), and negotiate with the Bluetooth audio device through the SEP to establish the same corresponding to the audio coding protocol (such as the A2DP Protocol) SEP of the default audio encoding format, thus completing the establishment of the Bluetooth audio connection. After the establishment of the Bluetooth audio connection is completed, the application program on the terminal can encode the local audio data or online audio data by the audio encoder (such as SBC audio encoding) corresponding to the corresponding default audio encoding format, and then the terminal can provide it through this interface. Transport Services and AV capabilities to transmit encoded audio stream data to Bluetooth audio devices.

In the embodiment of the present application, in one or more embodiments of the present application, the terminal obtains the first audio coding format supported by the Bluetooth audio device under the audio coding protocol and the first coding format corresponding to the first audio coding format parameter, when the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter corresponds to the second audio encoding format When the second audio encoding parameters do not match, switch the second audio encoding format to the default audio encoding format supported by both the terminal and the Bluetooth audio device under the audio encoding protocol, and perform audio encoding in the default audio encoding format. It can avoid the problem that the Bluetooth audio connection is interrupted when the Bluetooth audio formats supported by the terminal and the Bluetooth audio device are the same but the corresponding audio encoding parameters do not match, and the stability of the Bluetooth audio connection between the terminal and the Bluetooth audio device is improved, thereby ensuring The Bluetooth audio function works normally.

Please refer to FIG. 2 . FIG. 2 is a schematic flowchart of another embodiment of a method for determining an audio coding format proposed in the present application. specific:

Step 201: Send an encoding information acquisition request under the audio encoding protocol to the Bluetooth audio device.

The request can be understood as an instruction or requirement for requesting the Bluetooth audio device to work, and can be understood as a code for requesting the Bluetooth audio device to specify a certain operation or function realization. In the embodiment of this application, the encoding information acquisition request can be understood as the code for the terminal to request the encoding information of the Bluetooth audio device, and the Bluetooth audio device can obtain the locally stored audio encoding information by executing the code-"the audio The first audio encoding format supported under the encoding protocol and the first encoding parameters corresponding to the first audio encoding format".

Specifically, after the terminal establishes a Bluetooth connection with the Bluetooth audio device, based on the Bluetooth connection, the terminal can send a coding information acquisition request under the audio coding protocol to the Bluetooth audio device to inquire about the audio coding information supported by the Bluetooth audio device, such as The supported audio encoding format and the audio encoding parameters corresponding to the audio encoding format. After the Bluetooth audio device receives the coded information acquisition request, it can respond to the coded information acquisition request by executing the code requesting the coded information of the Bluetooth audio device to obtain the locally stored audio coded information-"the The first audio encoding format supported under the audio encoding protocol and the first encoding parameter corresponding to the first audio encoding format", and then send the encoding information including the first audio encoding format and the first encoding parameter through the Bluetooth connection to the terminal.

Step 202: Receive a first audio encoding format supported under the audio encoding protocol and a first encoding parameter corresponding to the first audio encoding format sent by the Bluetooth audio device.

Specifically, when the Bluetooth audio device responds to the encoding information acquisition request, the Bluetooth audio device acquires the encoding information supported under the audio encoding protocol, and passes the encoding information including the first audio encoding format and the first encoding parameters through the Bluetooth A connection is sent to the terminal. At this time, the terminal can receive the first audio encoding format supported by the audio encoding protocol and the first encoding parameter corresponding to the first audio encoding format sent by the Bluetooth audio device and sent by the Bluetooth audio device.

Step 203: Determine whether the first audio encoding format matches the second audio encoding format supported by the terminal under the audio encoding protocol, and whether the first encoding parameter corresponds to the second audio encoding format Whether the second audio encoding parameters match.

Specifically, the terminal judges whether the first audio encoding format matches the second audio encoding format, and whether the first encoding parameter matches the second audio encoding parameter corresponding to the second audio encoding format. Generally, there are four types: Condition:

1. The first audio encoding format does not match the second audio encoding format, and the first encoding parameter does not match the second audio encoding parameter corresponding to the second audio encoding format;

2. The first audio encoding format does not match the second audio encoding format, and the first encoding parameter matches the second audio encoding parameter corresponding to the second audio encoding format;

3. The first audio encoding format matches the second audio encoding format, and the first encoding parameter does not match the second audio encoding parameter corresponding to the second audio encoding format;

4. The first audio coding format matches the second audio coding format, and the first coding parameter matches the second audio coding parameter corresponding to the second audio coding format.

In the above four cases, the fourth case: when the first audio encoding format matches the second audio encoding format, and the first encoding parameter corresponds to the second audio encoding parameter of the second audio encoding format When matching, the terminal determines that the Bluetooth audio device controls to use the second audio coding format for audio coding; in the first case, the second case and the third case, the terminal can execute the method described in step 204 .

Wherein, the judging whether the first audio coding format matches the second audio coding format may be that the terminal judges whether the first audio coding format and the second audio coding format are the same audio coding format: 1. When the The first audio encoding format and the second audio encoding format are the same audio encoding format, then determine that the first audio encoding format matches the second audio encoding format; 2. When the first audio encoding format is different from the second audio encoding format audio encoding format, it is determined that the first audio encoding format does not match the second audio encoding format. Whether the first encoding parameter matches the second audio encoding parameter corresponding to the second audio encoding format may be judged based on a preset encoding parameter matching rule;

A coding parameter matching rule may be to judge whether the values of the audio coding parameters are consistent: 1. When the values of the first coding parameters and the second audio coding parameters corresponding to the second audio coding format are consistent, determine that the first coding parameters are consistent with the The second audio coding parameter matches; 2. When the first coding parameter is inconsistent with the value of the second audio coding parameter corresponding to the second audio coding format, determine that the first coding parameter does not match the second audio coding parameter.

A coding parameter matching rule may be based on the numerical range of the audio coding parameter: such as judging whether the numerical value or range of the first audio parameter falls within the numerical range of the second audio parameter; 1. When the numerical value or range of the first audio parameter is When the range falls within the value range of the second audio parameter, it is determined that the first encoding parameter matches the second audio encoding parameter; 2. When the value or range of the first audio parameter does not fall within the value range of the second audio parameter When within, it is determined that the first encoding parameter does not match the second audio encoding parameter.

In a specific implementation scenario, the second audio encoding format supported by the terminal is the AAC audio encoding format; the second audio encoding parameters are: bit rate 165kbps, sampling rate: 48khz; the first audio encoding format supported by the Bluetooth audio device is AAC Audio encoding format; the first audio encoding parameters are: bit rate 128kbps, sampling rate: 48khz or 44.1khz, the first audio encoding format and the second audio encoding format are compared to the same audio encoding format (AAC audio encoding format) , the sampling rate of the first encoding parameter is consistent with that of the second audio encoding parameter, and the bit rate of the first encoding parameter is inconsistent with that of the second audio encoding parameter; at this time, the terminal determines that the first audio encoding format is consistent with the The second audio encoding format supported under the audio encoding protocol matches but the first encoding parameter does not match the second audio encoding parameter corresponding to the second audio encoding format.

Optionally, when the Bluetooth audio device can support multiple first audio coding formats, that is, the terminal can obtain multiple first audio coding formats and first audio coding information corresponding to each first audio coding format, then the above-mentioned The method of judging whether the first audio encoding format matches the second audio encoding format supported by the terminal under the audio encoding protocol, and the first encoding parameter corresponding to the second audio encoding format Whether the audio encoding parameters match, as follows:

The terminal can sequence the first audio coding formats, for example, the first audio coding formats are: a, b, c, d four audio coding formats, and the sorting order is: b, c, d, a respectively. Then the terminal determines the current first audio encoding format according to the sort order of each first audio encoding format (that is, determines that the current first audio encoding format is the b audio encoding format), and executes the determination of the first audio encoding format and the terminal Whether the second audio encoding format supported under the audio encoding protocol matches, and whether the first encoding parameter matches the second audio encoding parameter corresponding to the second audio encoding format;

When the first audio encoding format (such as b audio encoding format) does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter is different from the second audio encoding format The second audio encoding parameters corresponding to the two audio encoding formats do not match, according to the sort order of the multiple first audio encoding formats, the next first audio encoding format of the current first audio encoding format is obtained, and the next first audio encoding format is obtained. An audio coding format is used as the current first audio coding format, and it is judged whether the first audio coding format matches the second audio coding format supported by the terminal under the audio coding protocol, and the first coding A step of determining whether the parameter matches the second audio encoding parameter corresponding to the second audio encoding format.

Step 204: Determine that the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter does not match the second audio encoding format The corresponding second audio encoding parameters do not match.

For details, refer to step 102, which will not be repeated here.

Optionally, when there are multiple second audio encoding formats supported by the terminal, the second audio encoding format in step 204 may be the default target audio encoding format of the terminal, that is, when establishing a Bluetooth audio encoding format with a Bluetooth audio device The target audio encoding format for connecting to audio data encoding transmission is preferred, wherein the target audio encoding format can be the default when the terminal leaves the factory, or user-defined, that is, the user can set it on the audio encoding format setting page of the terminal.

For example: when the user turns on the Bluetooth function of the terminal, in the Bluetooth setting interface of the terminal as shown in Figure 3, select the "Bluetooth audio encoding format" option to input encoding format setting instructions to the terminal. The encoding format setting command responds, and the corresponding display window of "Bluetooth audio encoding format" is displayed on the current display interface, as shown in Figure 4. Figure 4 is a schematic diagram of a terminal encoding format selection. In the interface shown in Figure 4 , the user can select the target audio encoding format from a plurality of audio encoding format options, for example, the user can select "AAC audio encoding format" by finger touch.

When the terminal performs step 204 to determine that the target audio encoding format does not match, the terminal executes the next step to obtain the next first audio encoding format of the current second audio encoding format according to the priority order of the multiple second audio encoding formats. Two audio encoding format steps.

Step 205: Obtain the next second audio coding format of the current second audio coding format according to the priority order of the multiple second audio coding formats.

The priority may be understood as the priority of each second audio coding format determined based on a priority determination policy.

In a specific implementation manner, the priority determination strategy may be that the terminal determines the priority corresponding to each second audio encoding format according to the audio encoding quality (such as sound quality, timbre) corresponding to each second audio encoding format. For example, taking the AAC audio encoding format, MP3 audio encoding format, and HWA audio encoding format aptX audio encoding format as examples, under the same bit rate, the audio encoding quality is usually HWA>aptX>AAC>MP3; the priority of the four encoding formats is The order of levels is: HWA>aptX>AAC>MP3.

In a specific implementation manner, the priority determination strategy may be that the terminal comprehensively determines the priority of each second audio coding format in combination with the audio coding quality and the Bluetooth connection state parameters between the terminal and the Bluetooth audio device. Wherein, the bluetooth connection status parameter may be received signal strength indication (received signalstrength indication, RSSI), received signal code power (received signal code power, RSCP), the ratio (EcIo )/per modulation bit power and noise spectral density ratio (EcNo)/signal-to-noise ratio (signal-to-noise ratio, SNR)/reference signal receiving quality (reference signal receiving quality, RSRQ), received Bluetooth signal bit error rate ( bit error ratio, BER)/block error rate (blockerror rate, BLER)/data packet error rate (packet error ratio, PER) and other communication parameters at least one parameter, it should be noted that, the said Bluetooth connection status There are many kinds of communication parameters, and one or more of the above-mentioned fittings may be determined according to actual application scenarios, and no specific limitation is made here.

Specifically, the terminal has the function of monitoring the Bluetooth connection status, and can monitor the communication parameters of the Bluetooth communication link between the terminal and the Bluetooth audio device in real time, so as to obtain the Bluetooth connection status parameters with the Bluetooth audio device, and acquiring a plurality of encoding coefficients respectively corresponding to the second audio encoding formats, the encoding coefficients can be understood as audio encoding coefficients determined according to the audio encoding quality corresponding to each second audio encoding format, for example, according to each second audio encoding format The corresponding audio encoding quality is determined to be 2.1 for HWA format, 2.2 for aptX, 2.3 for AAC, and 2.4 for MP3.

Then input the encoding coefficient and the Bluetooth connection state parameter into a scoring model to obtain a plurality of encoding scores corresponding to the second audio encoding format.

Wherein, by pre-acquiring a large amount of sample data in the actual Bluetooth communication link environment, extracting feature information, and marking the sample data, the feature information includes at least one communication parameter (RSSI, SNR, RSCP, etc.) and encoding coefficients to create scoring models. The scoring model can be trained using a large number of test samples, such as the scoring model can be based on a convolutional neural network (Convolutional Neural Network, CNN) model, a deep neural network (Deep Neural Network, DNN) model, a recurrent neural network ( Recurrent NeuralNetworks, RNN), model, embedding (embedding) model, gradient boosting decision tree (Gradient Boosting Decision Tree, GBDT) model, logistic regression (Logistic Regression, LR) model at least one implementation, based on the sample data that has been marked The scoring model is trained to obtain a trained scoring model.

The terminal may then determine the priorities of the plurality of second audio encoding formats based on the order of the encoding scores. According to the priority order of the plurality of second audio encoding formats, the next second audio encoding format of the current second audio encoding format can be obtained, for example: the plurality of second audio encoding formats are A and B respectively , C, and D. The priority order of A, B, C, and D is A>C>D>B. It can be understood that, in step 204, when it is determined that the second audio coding format-A audio coding format does not match, the next second audio coding format-C audio coding format next to the current second audio coding format is obtained according to the order of priority. Then execute the step of using the next second audio coding format as the current second audio coding format described in the next step.

Step 206: Use the next second audio encoding format as the current second audio encoding format, and determine whether the first audio encoding format and the second audio encoding format supported by the terminal under the audio encoding protocol are match, and whether the first encoding parameter matches the second audio encoding parameter corresponding to the second audio encoding format.

Specifically, taking the example of step 205 as an example, the terminal acquires the next second audio coding format of the current second audio coding format-C audio coding format according to the priority order of the multiple second audio coding formats. , using the C audio encoding format as the current second audio encoding format, and judging whether the first audio encoding format and the second audio encoding format (ie, the C audio encoding format) supported by the terminal under the audio encoding protocol are Matching, and whether the first encoding parameter matches the second audio encoding parameter corresponding to the second audio encoding format (ie, the C audio encoding parameter corresponding to the C audio encoding format);

When the first audio encoding format matches the second audio encoding format (ie C audio encoding format) supported by the terminal under the audio encoding protocol, and the first encoding parameter matches the second audio encoding format When the second audio coding parameter corresponding to the format (that is, the C audio coding parameter corresponding to the C audio coding format) matches, the terminal determines to perform audio coding in the current second audio coding format, that is, controls the use of the second audio coding format (that is, the C Audio encoding format) for audio encoding.

When the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter corresponds to the second audio encoding format corresponding to the second audio encoding format When the two audio coding parameters do not match, the terminal executes the step of obtaining the next second audio coding format of the current second audio coding format according to the order of priority of the multiple second audio coding formats.

Step 207: When there is no next second audio coding format, switch the second audio coding format to a default audio coding format under the audio coding protocol.

Specifically, when the terminal judges each second audio coding format based on the priority order of multiple second audio coding formats, to determine whether there is a second audio coding format that meets the matching requirements in the second audio coding format Format, when based on the order of priority, the order of each priority determines that the first audio encoding format does not match the last second audio encoding format supported by the terminal under the audio encoding protocol, and /or the first encoding parameter does not match the last second audio encoding parameter corresponding to the second audio encoding format. At this point, the terminal can determine that the second audio encoding formats supported under the audio encoding protocol (such as the A2DP protocol) cannot meet the matching requirements. It can be understood that if the terminal encodes in the second audio encoding format, the terminal and Bluetooth Bluetooth audio connections (such as Bluetooth A2DP audio connections) between audio devices cannot maintain normal audio data interaction, and Bluetooth audio devices cannot receive complete audio encoding data, that is, Bluetooth audio devices cannot play audio. At this time, the terminal generally determines that there is no next second audio encoding format, and the terminal device may perform audio encoding in a default audio encoding format. In practical applications, it is preferable to use the default audio encoding format as the audio encoding format agreed in the audio encoding protocol by the Bluetooth audio transmitter and the Bluetooth audio receiver to support audio codecs. For example, the Bluetooth audio transmitter is specified in the A2DP protocol And the Bluetooth audio receiving terminal supports the audio codec, wherein the SBC (Sub-band Coding) audio coding format is mandatory, and the default audio coding format can be the SBC audio coding format. It should be noted that when the terminal and the Bluetooth audio device encode and decode the audio book under the A2DP protocol in the SBC audio coding format, both the terminal and the Bluetooth audio device usually support the audio coding parameters corresponding to the SBC audio coding format. Then, the terminal controls the currently encoded audio coding format to switch from the second audio coding format (such as the AAC audio coding format) to the default audio coding format under the audio coding protocol (such as the SBC audio coding format under the A2DP protocol), Therefore, when the user starts the audio playback function on the terminal, it can control to use the default audio encoding format to perform audio encoding on the local or online audio data.

Step 208: Send format confirmation information to the Bluetooth audio device, where the format confirmation information is used to instruct the Bluetooth audio device to use the default audio coding format for audio coding.

Specifically, by performing the above steps, the terminal determines that the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter does not match the After the second audio encoding parameters corresponding to the second audio encoding format do not match, determine that the default audio encoding format is under the audio encoding protocol (such as the A2DP protocol) from the second audio format supported by the terminal and the default audio encoding format The current audio encoding format for . Then register the stream endpoint (Stream End Point, SEP) of the default audio coding format under the audio coding protocol (such as the A2DP protocol), and negotiate with the Bluetooth audio device through the SEP to establish the same corresponding audio coding protocol. (such as the SEP of the default audio encoding format of the A2DP protocol), and at the same time send format confirmation information to the Bluetooth audio device, the format confirmation information may include the audio encoding format and/or audio encoding parameters corresponding to the audio encoding format, such as, The format confirmation information may include the SBC audio encoding format under the A2DP protocol and/or the audio encoding parameters corresponding to the SBC audio encoding format. After the Bluetooth audio device receives the format confirmation information, it sets the current audio encoding configuration. For example, the current audio encoding format can be set to the SBC audio encoding format under the A2DP protocol, and the audio encoding parameter is set to SBC audio encoding. Format corresponding audio coding parameters, so as to complete the Bluetooth audio connection and Bluetooth audio codec settings, at this time, the Bluetooth audio device can control the use of the default audio coding format to work, and receive the audio coding data sent by the terminal through the audio coding connection , and call the audio decoder corresponding to the default audio encoding format to decode the audio encoding data, so as to normally play the audio corresponding to the audio encoding data; or, the Bluetooth audio device can be controlled to work in the default audio encoding format, Encode the audio encoded data at the local end by calling the audio encoder corresponding to the default audio encoding format, and send the encoded audio encoded data to the terminal through the Bluetooth audio connection (such as Bluetooth A2DP connection) with the terminal.

Step 209: Control the use of the default audio encoding format for audio encoding.

For details, refer to step 103, which will not be repeated here.

Step 210: Obtain the device identifier of the Bluetooth audio device, save the device identifier in a Bluetooth blacklist, and disable the second audio encoding format.

The device identifier is generally indication information used to characterize the type, model, specification, etc. of the Bluetooth audio device. Generally, the device identifier can be an id representing a Bluetooth audio device, such as 1, 2, 3, etc., representing id numbers; it can be a MAC address or an IP address representing a Bluetooth audio device; it can be a key character representing a Bluetooth audio device, such as a, b, c, etc.; can be key strings representing Bluetooth audio devices, such as pth_a, pth_b, pth_c; etc.

Further, the device identifier may also be information such as the chip model, factory code, and Bluetooth protocol version number of the Bluetooth audio device.

Specifically, the terminal can usually control the included Bluetooth communication module to scan for Bluetooth devices within the Bluetooth communication range to search for Bluetooth audio devices within the Bluetooth communication range. It can be understood that once the terminal scans the Bluetooth audio device, it will The device identifier of the Bluetooth audio device can be obtained from the Bluetooth audio device; or, during the process of establishing a Bluetooth connection with the Bluetooth audio device, the terminal can usually scan the Bluetooth broadcast packet broadcast by the Bluetooth audio device with the Bluetooth function enabled, and the terminal can respond to the received The Bluetooth broadcast packet is parsed to obtain the device identifier in the Bluetooth broadcast packet; since the device identifier can uniquely identify a Bluetooth audio device, the terminal can distinguish different Bluetooth devices according to the Bluetooth identifier, so that in the second audio encoding format and When the second audio coding parameter does not meet the matching requirements of the Bluetooth audio device, the Bluetooth identification of the Bluetooth audio device can be recorded, and the terminal can avoid controlling the use of the second audio coding format when establishing a Bluetooth audio connection with the Bluetooth device next time. encoding, and closing the second audio encoding format, where the closing can understandably inactivate an encoding process related to the second audio encoding format.

In a feasible implementation manner, the terminal can establish a corresponding Bluetooth blacklist for each supported second Bluetooth audio encoding format, for example, the terminal supports four Bluetooth audio encoding formats A, B, C, and D, which correspond to Bluetooth blacklists respectively. List A, Bluetooth Blacklist B, Bluetooth Blacklist C, Bluetooth Blacklist D. By executing the method for determining the audio coding format in the embodiment of the present application, the terminal determines that "a certain second Bluetooth audio coding format" does not match when it is determined that a certain second Bluetooth audio coding format does not match the one supported by the Bluetooth audio device. The corresponding target bluetooth blacklist, adding the device identification to the target bluetooth blacklist, the terminal can avoid controlling to use "a certain second bluetooth audio encoding format" for encoding when establishing a bluetooth audio connection with the bluetooth device next time.

In a feasible implementation manner, the terminal can be classified according to the audio coding quality corresponding to each second Bluetooth audio coding format supported, such as divided into a primary audio coding format and a secondary audio coding format, wherein the primary audio coding format It may include at least LDAC encoding format and APT-X encoding format, and the secondary audio encoding method may at least include AAC encoding format and SBC (sub band code). Understandably, it should be noted that the above-mentioned audio coding methods are only examples, and do not limit the types of audio coding methods. Specifically, a rule can be defined to divide all audio coding methods into one-level audio coding format and Level 2 audio encoding, the first level audio encoding corresponds to Bluetooth blacklist 1, and the second level audio encoding corresponds to Bluetooth blacklist 2. When the Bluetooth audio device does not support the first-level audio encoding, the device identification is added to the Bluetooth blacklist 1; and when the Bluetooth audio device does not support the second-level audio encoding, the device identification is added to the Bluetooth blacklist 2; wherein, in actual operation Among them, if the device identifier of the Bluetooth audio device is in the Bluetooth blacklist 1, the Bluetooth audio encoding method corresponding to the Bluetooth blacklist 1 is not used for encoding.

In the embodiment of the present application, in one or more embodiments of the present application, the terminal obtains the first audio coding format supported by the Bluetooth audio device under the audio coding protocol and the first coding format corresponding to the first audio coding format parameter, when the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter corresponds to the second audio encoding format When the second audio encoding parameters do not match, switch the second audio encoding format to the default audio encoding format supported by both the terminal and the Bluetooth audio device under the audio encoding protocol, and perform audio encoding in the default audio encoding format. It can avoid the problem that the Bluetooth audio connection is interrupted when the Bluetooth audio formats supported by the terminal and the Bluetooth audio device are the same but the corresponding audio encoding parameters do not match, and the stability of the Bluetooth audio connection between the terminal and the Bluetooth audio device is improved, thereby ensuring and, when the first audio encoding format does not match the second audio encoding format, and/or when the first audio parameter does not match the second audio parameter, save the device identification to the Bluetooth blacklist, and the terminal It can be matched based on the device identification in the Bluetooth blacklist when matching the audio encoding format with the Bluetooth audio device next time, which can save the time for matching the audio encoding format with the Bluetooth audio device next time; and, when the second audio encoding format supported by the terminal When there are multiple formats, the priority order of multiple second audio encoding formats is determined based on the encoding coefficients corresponding to the bluetooth connection status parameters and the second audio encoding format, and the audio encoding format is matched according to the priority order , which can improve the accuracy of audio encoding format matching.

Please refer to FIG. 5 , which is a schematic diagram of a scene of a system for determining an audio coding format provided by an embodiment of the present application. As shown in FIG. 5 , the system for determining an audio encoding format may include a terminal 100 and a Bluetooth audio device cluster. The Bluetooth audio device cluster can include a plurality of Bluetooth audio devices, as shown in Figure 1, specifically including Bluetooth audio device 1, Bluetooth audio device 2, ..., Bluetooth audio device n, n is an integer greater than 0; for ease of understanding, The embodiment of the present invention is described by taking the terminal 100 and the Bluetooth audio device 1 in FIG. 1 as examples.

Each Bluetooth audio device in the Bluetooth audio device cluster can be an electronic device with a Bluetooth audio function, and the electronic device includes but is not limited to: a Bluetooth headset, a Bluetooth speaker, a smart bracelet, a personal computer, a tablet computer, a vehicle device, a computer device or other processing equipment connected to the wireless modem, etc.

The terminal 100 includes, but is not limited to, a mobile station (MS, Mobile Station), a mobile terminal (MobileTerminal), a mobile phone (Mobile Telephone), a mobile phone (handset), and a portable equipment (portable equipment). (RAN, Radio Access Network) communicates with one or more core networks. For example, the terminal can be a mobile phone (or called a "cellular" phone), a computer with wireless communication functions, etc., and the terminal can also be a portable, pocket-sized , handheld, computer built-in, or vehicle-mounted mobile devices or equipment.

The terminal 100 establishes a Bluetooth connection with the Bluetooth audio device 1 .

Specifically, the terminal 100 may monitor the Bluetooth pairing instruction input by the user, and acquire Bluetooth pairing information input for the Bluetooth pairing instruction.

The Bluetooth pairing instruction refers to a code for a computer to execute a Bluetooth pairing operation. In this embodiment, it can be understood that the terminal 100 executes a code for establishing a Bluetooth pairing operation with the Bluetooth audio device 1 .

Specifically, the terminal 100 may have a touch screen. When the user touches the option of the target blue night audio device on the display interface of the terminal 100 by means of a stylus or finger touch, the terminal 100 detects the capacitance of the position of the Bluetooth icon. The parameter changes, and the Bluetooth pairing command input by the user is monitored, and based on the Bluetooth pairing information input by the user, the Bluetooth pairing information can be understood as the device identification of the Bluetooth audio device 1, specifically, the Bluetooth pairing device of the user on the terminal 100 Select the device ID of Bluetooth audio device 1 in the list. At this point, the terminal 100 acquires the Bluetooth pairing information input by the user for the Bluetooth pairing instruction. Then the terminal 100 starts to establish a Bluetooth connection with the Bluetooth audio device 1 , wherein, for detailed steps of establishing the Bluetooth connection, reference may be made to related technologies, which will not be repeated here.

After the terminal 100 establishes the Bluetooth connection with the Bluetooth audio device 1, based on the Bluetooth connection, it can send a coding information acquisition request under the audio coding protocol to the Bluetooth audio device 1 to inquire about the audio coding supported by the Bluetooth audio device 1. Information, such as the supported audio encoding format and the audio encoding parameters corresponding to the audio encoding format.

After the Bluetooth audio device 1 receives the coded information acquisition request sent by the terminal 100, it can respond to the coded information acquisition request by executing the code requesting the coded information of the Bluetooth audio device 1 to obtain the locally stored audio. Encoding information - "the first audio encoding format supported under the audio encoding protocol and the first encoding parameter corresponding to the first audio encoding format", and then the information containing the first audio encoding format and the first encoding parameter The coded information is sent to the terminal 100 via a Bluetooth connection.

The terminal 100 can then receive the first audio encoding format supported under the audio encoding protocol and the first encoding parameters corresponding to the first audio encoding format sent by the Bluetooth audio device 1 .

The terminal 100 acquires the second audio encoding format and the second audio encoding format supported under the audio encoding protocol (such as the A2DP protocol), for example, the second audio encoding format and the second audio encoding format generally supported by the terminal 100 Save to the audio encoding configuration file, and the terminal 100 can obtain the second audio encoding format and the second encoding parameters supported under the audio encoding protocol from the local audio encoding configuration file. Then judge whether the first audio encoding format matches the second audio encoding format, and whether the first encoding parameter matches the second audio encoding parameter corresponding to the second audio encoding format.

Specifically, the terminal 100 judges whether the first audio encoding format matches the second audio encoding format, and whether the first encoding parameter matches the second audio encoding parameter corresponding to the second audio encoding format. Generally, there are 4 Cases:

1. The first audio encoding format matches the second audio encoding format, and the first encoding parameter matches the second audio encoding parameter corresponding to the second audio encoding format;

2. The first audio encoding format does not match the second audio encoding format, and the first encoding parameter matches the second audio encoding parameter corresponding to the second audio encoding format;

3. The first audio encoding format matches the second audio encoding format, and the first encoding parameter does not match the second audio encoding parameter corresponding to the second audio encoding format;

4. The first audio coding format matches the second audio coding format, and the first coding parameter matches the second audio coding parameter corresponding to the second audio coding format.

In the above four cases, the fourth case: when the first audio encoding format matches the second audio encoding format, and the first encoding parameter corresponds to the second audio encoding parameter of the second audio encoding format When matching, the terminal 100 determines that the Bluetooth audio device 1 controls to use the second audio coding format for audio coding; in the first case, the second case and the third case, the terminal determines that the first audio coding format is compatible with the The second audio encoding format supported by the terminal under the audio encoding protocol does not match, and/or the first encoding parameter does not match the second audio encoding parameter corresponding to the second audio encoding format. At this time, The terminal 100 switches the second audio encoding format to a default audio encoding format under the audio encoding protocol.

In practical applications, the terminal 100 preferably uses the default audio encoding format as the audio encoding format agreed in the audio encoding agreement by the Bluetooth audio transmitter and the Bluetooth audio receiver to support audio codecs. For example, the Bluetooth audio encoding format is specified in the A2DP protocol. The audio coding and decoding supported by the sending end and the Bluetooth audio receiving end, wherein the SBC (Sub-band Coding) audio coding format is mandatory, and the default audio coding format can be the SBC audio coding format. It should be noted that when the terminal 100 and the Bluetooth audio device 1 perform audio coding and decoding on the audio book under the A2DP protocol in the SBC audio coding format, the terminal 100 and the Bluetooth audio device 1 generally support the audio coding parameters corresponding to the SBC audio coding format .

The terminal 100 determines that the first audio encoding format does not match the second audio encoding format supported by the terminal 100 under the audio encoding protocol by performing the above steps, and/or the first encoding parameter does not match the After the second audio encoding parameters corresponding to the second audio encoding format do not match, determine that the default audio encoding format is under the audio encoding protocol (such as the A2DP protocol) from the second audio format supported by the terminal 100 and the default audio encoding format. The terminal 100 sends format confirmation information to the Bluetooth audio device 1 at the same time, and the format confirmation information may include the audio coding format and/or the audio coding parameters corresponding to the audio coding format.

For example, the format confirmation information may include the SBC audio encoding format under the A2DP protocol and/or the audio encoding parameters corresponding to the SBC audio encoding format. After receiving the format confirmation information, the Bluetooth audio device 1 sets the current audio encoding configuration. For example, the current audio encoding format can be set as the SBC audio encoding format under the A2DP protocol, and the audio encoding parameter is set as the SBC audio encoding format. The audio encoding parameters corresponding to the encoding format, so as to complete the Bluetooth audio connection and the Bluetooth audio encoding and decoding settings. At this time, the Bluetooth audio device 1 can be controlled to use the default audio encoding format to work.

The terminal 100 can connect the audio encoding data sent to the Bluetooth audio device 1 through the audio encoding connection;

The Bluetooth audio device 1 receives the audio encoded data sent by the terminal 100 through the audio encoding connection, and calls the audio decoder corresponding to the default audio encoding format to decode the audio encoded data, so as to normally play the audio corresponding to the audio encoded data; or,

The Bluetooth audio device 1 can be controlled to work with the default audio encoding format, encode the audio encoding data of the local end by calling the audio encoder corresponding to the default audio encoding format, and encode the encoded audio encoding data It is sent to the terminal 100 through a Bluetooth audio connection (such as a Bluetooth A2DP connection) with the terminal 100 .

In the embodiment of the present application, in one or more embodiments of the present application, the terminal obtains the first audio coding format supported by the Bluetooth audio device under the audio coding protocol and the first coding format corresponding to the first audio coding format parameter, when the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter corresponds to the second audio encoding format When the second audio encoding parameters do not match, switch the second audio encoding format to the default audio encoding format supported by both the terminal and the Bluetooth audio device under the audio encoding protocol, and perform audio encoding in the default audio encoding format. It can avoid the problem that the Bluetooth audio connection is interrupted when the Bluetooth audio formats supported by the terminal and the Bluetooth audio device are the same but the corresponding audio encoding parameters do not match, and the stability of the Bluetooth audio connection between the terminal and the Bluetooth audio device is improved, thereby ensuring The Bluetooth audio function works normally.

The following are device embodiments of the present application, which can be used to implement the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

Please refer to FIG. 6 , which shows a schematic structural diagram of an apparatus for determining an audio coding format provided by an exemplary embodiment of the present application. The device for determining the audio coding format can be implemented as all or a part of the device through software, hardware or a combination of the two. The device 1 includes a format parameter acquisition module 11 , a coding format switching module 12 and an audio coding control module 13 .

The format parameter obtaining module 11 is used to obtain the first audio coding format supported by the Bluetooth audio device under the audio coding protocol and the first coding parameter corresponding to the first audio coding format;

An encoding format switching module 12, configured to determine that the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter is inconsistent with the The second audio encoding parameters corresponding to the second audio encoding format do not match, switching the second audio encoding format to the default audio encoding format under the audio encoding protocol;

The audio coding control module 13 is configured to control audio coding using the default audio coding format.

Optionally, as shown in Figure 7, the format parameter acquisition module 11 includes:

An acquisition request sending unit 111, configured to send an encoding information acquisition request under the audio encoding protocol to the Bluetooth audio device;

The format parameter acquisition unit 112 is configured to receive the first audio encoding format supported under the audio encoding protocol and the first encoding parameter corresponding to the first audio encoding format sent by the Bluetooth audio device.

Optionally, as shown in Figure 9, the device 1 further includes:

An encoding format matching module 14, configured to determine whether the first audio encoding format matches a second audio encoding format supported by the terminal under the audio encoding protocol, and whether the first encoding parameter matches the second audio encoding format. Whether the second audio encoding parameter corresponding to the audio encoding format matches.

Optionally, the second audio encoding format includes multiple formats, as shown in FIG. 8, the encoding format switching module 12 further includes:

The encoding format acquisition unit 121 is configured to acquire the next second audio encoding format of the current second audio encoding format according to the order of priority of the plurality of second audio encoding formats;

The audio coding matching unit 122 is configured to use the next second audio coding format as the current second audio coding format, and perform judgment on the first audio coding format and the audio coding format supported by the terminal under the audio coding protocol. Whether the second audio encoding format matches, and whether the first encoding parameter matches the second audio encoding parameter corresponding to the second audio encoding format;

The encoding format switching unit 123 is configured to switch the second audio encoding format to a default audio encoding format under the audio encoding protocol when there is no next second audio encoding format.

Optionally, as shown in Figure 9, the device 1 further includes:

A priority determination module 15, configured to obtain a Bluetooth connection state parameter with the Bluetooth audio device, and obtain a plurality of coding coefficients respectively corresponding to the second audio coding format;

The priority determination module 15 is further configured to input the encoding coefficient and the Bluetooth connection status parameter into the scoring model, and respectively obtain a plurality of encoding scores corresponding to the second audio encoding format;

The priority determination module 15 is further configured to determine the priority of multiple second audio encoding formats based on the order of the encoding scores.

Optionally, as shown in Figure 9, the device 1 further includes:

The device identification saving module 16 is configured to obtain the device identification of the Bluetooth audio device, save the device identification in the Bluetooth blacklist, and close the second audio encoding format.

Optionally, as shown in Figure 9, the device 1 further includes:

The format information sending module 17 is configured to send format confirmation information to the Bluetooth audio device, and the format confirmation information is used to instruct the Bluetooth audio device to use the default audio coding format for audio coding.

It should be noted that, when the audio coding format determining device provided in the above-mentioned embodiments executes the audio coding format determining method, the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned functions can be assigned by different The functional modules are completed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device for determining the audio encoding format provided by the above embodiment and the embodiment of the method for determining the audio encoding format belong to the same concept, and the implementation process thereof is detailed in the method embodiment, and will not be repeated here.

The serial numbers of the above embodiments of the present application are for description only, and do not represent the advantages and disadvantages of the embodiments.

In this embodiment, in one or more embodiments of the present application, the terminal obtains the first audio coding format supported by the Bluetooth audio device under the audio coding protocol and the first coding parameter corresponding to the first audio coding format , when the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter corresponds to the second audio encoding format When the second audio encoding parameters do not match, switch the second audio encoding format to a default audio encoding format supported by both the terminal and the Bluetooth audio device under the audio encoding protocol, and perform audio encoding in the default audio encoding format. It can avoid the problem that the Bluetooth audio connection is interrupted when the Bluetooth audio formats supported by the terminal and the Bluetooth audio device are the same but the corresponding audio encoding parameters do not match, and the stability of the Bluetooth audio connection between the terminal and the Bluetooth audio device is improved, thereby ensuring and, when the first audio encoding format does not match the second audio encoding format, and/or when the first audio parameter does not match the second audio parameter, save the device identification to the Bluetooth blacklist, and the terminal It can be matched based on the device identification in the Bluetooth blacklist when matching the audio encoding format with the Bluetooth audio device next time, which can save the time for matching the audio encoding format with the Bluetooth audio device next time; and, when the second audio encoding format supported by the terminal When there are multiple formats, the priority order of multiple second audio encoding formats is determined based on the encoding coefficients corresponding to the bluetooth connection status parameters and the second audio encoding format, and the audio encoding format is matched according to the priority order , which can improve the accuracy of audio encoding format matching.

The embodiment of the present application also provides a computer storage medium, the computer storage medium can store a plurality of instructions, and the instructions are suitable for being loaded and executed by a processor as described in the above-mentioned embodiments shown in FIGS. 1-5 . For the method for determining the audio coding format, the specific execution process can refer to the specific descriptions of the embodiments shown in FIGS. 1-5 , and details are not repeated here.

The present application also provides a computer program product, the computer program product stores at least one instruction, and the at least one instruction is loaded by the processor and executes the audio coding in the embodiment shown in the above-mentioned Fig. 1-Fig. 5 For the format determining method and the specific execution process, refer to the specific descriptions of the embodiments shown in FIGS. 1-5 , and details are not repeated here.

Please refer to FIG. 10 , which provides a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in FIG. 10 , the electronic device 1000 may include: at least one processor 1001 , at least one network interface 1004 , a user interface 1003 , a memory 1005 , and at least one communication bus 1002 .

Wherein, the communication bus 1002 is used to realize connection and communication between these components.

Wherein, the user interface 1003 may include a display screen (Display) and a camera (Camera), and the optional user interface 1003 may also include a standard wired interface and a wireless interface.

Wherein, the network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface).

Wherein, the processor 1001 may include one or more processing cores. The processor 1001 uses various interfaces and lines to connect various parts in the entire server 1000, and executes the server by running or executing instructions, programs, code sets or instruction sets stored in the memory 1005, and calling data stored in the memory 1005. 1000's of various functions and processing data. Optionally, the processor 1001 may use at least one of Digital Signal Processing (Digital Signal Processing, DSP), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), and Programmable Logic Array (Programmable Logic Array, PLA). implemented in the form of hardware. The processor 1001 may integrate one or a combination of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU), a modem, and the like. Among them, the CPU mainly handles the operating system, user interface and application programs, etc.; the GPU is used to render and draw the content that needs to be displayed on the display screen; the modem is used to handle wireless communication. It can be understood that the above modem may also not be integrated into the processor 1001, but implemented by a single chip.

Wherein, the memory 1005 may include random access memory (Random Access Memory, RAM), and may also include read-only memory (Read-Only Memory). Optionally, the storage 1005 includes a non-transitory computer-readable storage medium (non-transitory computer-readable storage medium). The memory 1005 may be used to store instructions, programs, codes, sets of codes or sets of instructions. The memory 1005 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), Instructions, etc. used to implement the above method embodiments; the storage data area can store data, etc. involved in the above method embodiments. Optionally, the memory 1005 may also be at least one storage device located away from the aforementioned processor 1001 . As shown in FIG. 10 , the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and an audio encoding format determining application program.

In the electronic device 1000 shown in FIG. 10 , the user interface 1003 is mainly used to provide the user with an input interface to obtain the data input by the user; and the processor 1001 can be used to call the audio coding format determination application program stored in the memory 1005, And specifically do the following:

Obtain the first audio encoding format supported by the Bluetooth audio device under the audio encoding protocol and the first encoding parameters corresponding to the first audio encoding format;

Determine that the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter corresponds to the second audio encoding format corresponding to the second audio encoding format The two audio encoding parameters do not match, switching the second audio encoding format to the default audio encoding format under the audio encoding protocol;

Controls the use of the default audio encoding format for audio encoding.

In one embodiment, when the processor 1001 executes the acquisition of the first audio encoding format supported by the Bluetooth audio device under the audio encoding protocol and the first encoding parameter corresponding to the first audio encoding format, specifically execute Do the following:

Send an encoding information acquisition request under the audio encoding protocol to the Bluetooth audio device;

Receive the first audio encoding format supported under the audio encoding protocol and the first encoding parameter corresponding to the first audio encoding format sent by the Bluetooth audio device.

In one embodiment, the processor 1001 determines that the first audio coding format does not match the second audio coding format supported by the terminal under the audio coding protocol, and/or the first Before the encoding parameter does not match the second audio encoding parameter corresponding to the second audio encoding format, the following operations are also performed:

Judging whether the first audio encoding format matches the second audio encoding format supported by the terminal under the audio encoding protocol, and determining whether the first encoding parameter matches the second audio encoding format corresponding to the second audio encoding format Whether the encoding parameters match.

In one embodiment, when the processor 1001 executes the second audio encoding format, it includes multiple, and when switching the second audio encoding format to the default audio encoding format under the audio encoding protocol, specifically Do the following:

Acquiring the next second audio coding format of the current second audio coding format according to the priority order of the plurality of second audio coding formats;

Using the next second audio encoding format as the current second audio encoding format, and performing a judgment on whether the first audio encoding format matches the second audio encoding format supported by the terminal under the audio encoding protocol, And a step of whether the first encoding parameter matches the second audio encoding parameter corresponding to the second audio encoding format;

When there is no next second audio coding format, switch the second audio coding format to a default audio coding format under the audio coding protocol.

In one embodiment, before the processor 1001 executes the order of priority of the multiple second audio coding formats, the following operations are further performed:

Acquiring Bluetooth connection state parameters with the Bluetooth audio device, and obtaining a plurality of encoding coefficients respectively corresponding to the second audio encoding format;

Inputting the encoding coefficient and the Bluetooth connection state parameter into the scoring model to obtain a plurality of encoding scores corresponding to the second audio encoding format;

Priorities of the plurality of second audio coding formats are determined sequentially based on the magnitude of each of the coding scores.

In one embodiment, when the processor 1001 executes the method for determining the audio encoding format, it further performs the following operations:

Obtain the device identification of the Bluetooth audio device, save the device identification in the Bluetooth blacklist, and close the second audio encoding format.

In one embodiment, after the processor 1001 performs the switching of the second audio encoding format to the default audio encoding format under the audio encoding protocol, the following operations are further performed:

Send format confirmation information to the Bluetooth audio device, where the format confirmation information is used to instruct the Bluetooth audio device to use the default audio coding format for audio coding.

In this embodiment, in one or more embodiments of the present application, the terminal obtains the first audio coding format supported by the Bluetooth audio device under the audio coding protocol and the first coding parameter corresponding to the first audio coding format , when the first audio encoding format does not match the second audio encoding format supported by the terminal under the audio encoding protocol, and/or the first encoding parameter corresponds to the second audio encoding format When the second audio encoding parameters do not match, switch the second audio encoding format to a default audio encoding format supported by both the terminal and the Bluetooth audio device under the audio encoding protocol, and perform audio encoding in the default audio encoding format. It can avoid the problem that the Bluetooth audio connection is interrupted when the Bluetooth audio formats supported by the terminal and the Bluetooth audio device are the same but the corresponding audio encoding parameters do not match, and the stability of the Bluetooth audio connection between the terminal and the Bluetooth audio device is improved, thereby ensuring and, when the first audio encoding format does not match the second audio encoding format, and/or when the first audio parameter does not match the second audio parameter, save the device identification to the Bluetooth blacklist, and the terminal It can be matched based on the device identification in the Bluetooth blacklist when matching the audio encoding format with the Bluetooth audio device next time, which can save the time for matching the audio encoding format with the Bluetooth audio device next time; and, when the second audio encoding format supported by the terminal When there are multiple formats, the priority order of multiple second audio encoding formats is determined based on the encoding coefficients corresponding to the bluetooth connection status parameters and the second audio encoding format, and the audio encoding format is matched according to the priority order , which can improve the accuracy of audio encoding format matching.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory or a random access memory, and the like.

The above disclosures are only preferred embodiments of the present application, which certainly cannot limit the scope of the present application. Therefore, equivalent changes made according to the claims of the present application still fall within the scope of the present application.

Claims (10)

1. An audio coding format determining method applied to a terminal, the method comprising:

acquiring a first audio coding format supported by Bluetooth audio equipment under an audio coding protocol and a first coding parameter corresponding to the first audio coding format, wherein the terminal supports a second audio coding format under the audio coding protocol, and the audio coding protocol is the Bluetooth audio coding protocol;

when the first audio coding format is not matched with a second audio coding format and the first coding parameter is not matched with a second audio coding parameter corresponding to the second audio coding format, or when the first audio coding format is not matched with the second audio coding format and the first coding parameter is matched with the second audio coding parameter corresponding to the second audio coding format, or when the first audio coding format is matched with the second audio coding format and the first coding parameter is not matched with the second audio coding parameter corresponding to the second audio coding format, the second audio coding format is switched to a default audio coding format under the audio coding protocol, and audio coding is conducted by using the default audio coding format;

And when the first audio coding format is matched with a second audio coding format and the first coding parameters are matched with the second audio coding parameters corresponding to the second audio coding format, determining to perform audio coding in the second audio coding format.

2. The method of claim 1, wherein the obtaining a first audio encoding format supported by the bluetooth audio device under the audio encoding protocol and a first encoding parameter corresponding to the first audio encoding format comprises:

transmitting a coded information acquisition request under an audio coding protocol to Bluetooth audio equipment;

and receiving a first audio coding format supported by the audio coding protocol and a first coding parameter corresponding to the first audio coding format, which are sent by the Bluetooth audio equipment.

3. The method of claim 1, wherein when the first audio encoding format does not match a second audio encoding format and the first encoding parameter does not match a second audio encoding parameter corresponding to the second audio encoding format, or when the first audio encoding format does not match a second audio encoding format and the first encoding parameter does match a second audio encoding parameter corresponding to the second audio encoding format, or when the first audio encoding format does match a second audio encoding format and the first encoding parameter does not match a second audio encoding parameter corresponding to the second audio encoding format, switching the second audio encoding format to a default audio encoding format under the audio encoding protocol is preceded by:

And judging whether the first audio coding format is matched with a second audio coding format supported by the terminal under the audio coding protocol, and judging whether the first coding parameters are matched with second audio coding parameters corresponding to the second audio coding format.

4. A method according to claim 3, wherein the second audio coding format comprises a plurality, and said switching the second audio coding format to a default audio coding format under the audio coding protocol comprises:

acquiring the next second audio coding format of the current second audio coding format according to the high-low order of the priorities of the plurality of second audio coding formats;

taking the next second audio coding format as a current second audio coding format, and executing the steps of judging whether the first audio coding format is matched with a second audio coding format supported by the terminal under the audio coding protocol, and judging whether the first coding parameter is matched with a second audio coding parameter corresponding to the second audio coding format;

when the next second audio coding format does not exist, the second audio coding format is switched to a default audio coding format under the audio coding protocol.

5. The method of claim 4, further comprising, prior to said prioritizing a plurality of said second audio encoding formats:

acquiring Bluetooth connection state parameters of the Bluetooth audio equipment and acquiring a plurality of coding coefficients respectively corresponding to the second audio coding formats;

inputting the coding coefficients and the Bluetooth connection state parameters into a scoring model to respectively obtain a plurality of coding scores corresponding to the second audio coding formats;

a priority of a plurality of the second audio encoding formats is determined based on a size order of each of the encoding scores.

6. The method according to claim 1, wherein the method further comprises:

and acquiring the equipment identifier of the Bluetooth audio equipment, storing the equipment identifier into a Bluetooth blacklist, and closing the second audio coding format.

7. The method of claim 1, further comprising, after said switching said second audio encoding format to a default audio encoding format under said audio encoding protocol:

and sending format confirmation information to the Bluetooth audio equipment, wherein the format confirmation information is used for indicating the Bluetooth audio equipment to perform audio coding by adopting the default audio coding format.

8. An audio coding format determining apparatus, the apparatus comprising:

the device comprises a format parameter acquisition module, a format parameter acquisition module and a data processing module, wherein the format parameter acquisition module is used for acquiring a first audio coding format supported by Bluetooth audio equipment under an audio coding protocol and a first coding parameter corresponding to the first audio coding format, the device supports a second audio coding format under the audio coding protocol, and the audio coding protocol is the Bluetooth audio coding protocol;

an encoding format switching module, configured to switch the second audio encoding format to a default audio encoding format under the audio encoding protocol when the first audio encoding format does not match a second audio encoding format and the first encoding parameter does not match a second audio encoding parameter corresponding to the second audio encoding format, or when the first audio encoding format does match a second audio encoding format and the first encoding parameter does not match a second audio encoding parameter corresponding to the second audio encoding format;

The audio coding control module is used for controlling the audio coding by adopting the default audio coding format;

the device is further configured to: and when the first audio coding format is matched with a second audio coding format and the first coding parameters are matched with the second audio coding parameters corresponding to the second audio coding format, determining to perform audio coding in the second audio coding format.

9. A computer storage medium storing a plurality of instructions adapted to be loaded by a processor and to perform the method steps of any one of claims 1 to 7.

10. An electronic device, comprising: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method steps of any of claims 1-7.