CN111768791B - Audio playing method and device and vehicle - Google Patents

Abstract

The embodiment of the invention provides an audio playing method, an audio playing device and a vehicle, wherein the method is applied to the vehicle, the vehicle is provided with an operating system, a digital signal processor and a plurality of audio playing devices, and the method comprises the following steps: the digital signal processor receives target audio data sent by an operating system, the target audio data is generated by combining first channel decoding audio data of a plurality of channels by the operating system, and the first channel decoding audio data is generated by performing audio source decoding on multi-channel original audio data by the operating system; performing channel decoding on the target audio data to obtain second channel decoded audio data corresponding to a plurality of channels; and respectively distributing the second channel decoding audio data corresponding to the plurality of channels to audio playing equipment corresponding to the plurality of channels for playing. The real stereo effect is presented in the vehicle by decoding the multi-channel original audio data and playing the audio data of different channels at different audio playing devices.

Description

Audio playback method, device and vehicle

Technical field

The present invention relates to the field of vehicle audio technology, and in particular to an audio playing method, an audio playing device and a vehicle.

Background technique

With the continuous development of the vehicle industry, the internal configuration of vehicles also tends to be diversified; for example, car audio systems. While driving, users can play the sounds they want to hear at any time through the car audio system, which improves the user's driving experience.

Usually, in order to further improve the user's listening experience, multiple speakers are installed in different directions in the car, and multiple speakers are used to play sounds at the same time, so that users can enjoy a stereo sound experience. In the existing technology, the vehicle's on-board audio system can only decode mono or dual-channel audio, and by decoding mono or dual-channel audio, only two channels can be obtained at most. In fact, in order to present a true stereo effect, different channels of sound need to be played simultaneously in each speaker of the vehicle; therefore, only the channels analyzed by mono or dual-channel audio cannot be used in the vehicle. Realize the true stereo effect through the car audio system.

Contents of the invention

Embodiments of the present invention provide an audio playback method to present a stereo effect when playing audio data in a vehicle.

Correspondingly, embodiments of the present invention also provide an audio playback device and a vehicle to ensure the implementation and application of the above method.

In order to solve the above problems, the present invention discloses an audio playback method, which is applied to a vehicle. The vehicle is equipped with an operating system, a digital signal processor and multiple audio playback devices. The method includes:

The digital signal processor receives target audio data sent by the operating system. The target audio data is generated by the operating system combining the first channel decoded audio data of multiple channels. The first channel decoded audio data The operating system performs audio source decoding and generation on multi-channel original audio data;

Perform channel decoding on the target audio data to obtain second channel decoded audio data corresponding to multiple channels;

The second channel decoded audio data corresponding to the multiple channels is allocated to the audio playback devices corresponding to the multiple channels for playback.

Optionally, the method also includes:

Perform at least one of the following preprocessing on each second channel decoded audio data: volume adjustment, smoothing processing, and EQ (Equalizer) adjustment.

Optionally, the second channel decoded audio data is a digital signal, and allocating the second channel decoded audio data corresponding to multiple channels to the audio playback devices corresponding to the multiple channels for playback includes:

Search the preset mapping relationship according to the channel corresponding to the decoded audio data of each second channel, and determine the audio playback device corresponding to each channel;

Convert the decoded audio data of the second channel corresponding to the multiple channels into corresponding analog signals respectively, and drive the audio playback device corresponding to the multiple channels to play.

Optionally, allocating the second channel decoded audio data corresponding to the multiple channels to the audio playback devices corresponding to the multiple channels for playback includes:

For one channel, mix the second channel decoded audio data corresponding to the channel and the second channel decoded audio data corresponding to at least one other channel to obtain the mixed audio data corresponding to the channel;

The mixed audio data corresponding to multiple channels is allocated to the audio playback devices corresponding to multiple channels for playback.

Optionally, the target audio data is generated by the operating system using time division multiplexing technology to combine the first channel decoded audio data of multiple channels.

An embodiment of the present invention also provides an audio playback device for use in a vehicle. The vehicle is provided with an operating system, a digital signal processor and multiple audio playback devices. The device includes:

A receiving module, configured for the digital signal processor to receive target audio data sent by the operating system. The target audio data is generated by the operating system decoding the first channel audio data of multiple channels. The first channel The channel decoded audio data is generated by the operating system decoding the multi-channel original audio data;

A channel decoding module is used to perform channel decoding on the target audio data to obtain second channel decoded audio data corresponding to multiple channels;

The allocation module is used to allocate the decoded audio data of the second channel corresponding to the multiple channels to the audio playback devices corresponding to the multiple channels for playback.

Optionally, the device also includes:

A preprocessing module, configured to perform at least one of the following preprocessing on each second channel decoded audio data: volume adjustment, smoothing processing and EQ adjustment.

Optionally, the second channel decoded audio data is a digital signal, and the distribution module includes:

The device determination submodule is used to search for a preset mapping relationship based on the channel corresponding to the decoded audio data of each second channel, and determine the audio playback device corresponding to each channel;

The conversion driver submodule is used to convert the second channel decoded audio data corresponding to multiple channels into corresponding analog signals, and drive the audio playback equipment corresponding to the multiple channels to play.

Optionally, the distribution module includes:

A mixing submodule, used for mixing, for one channel, the second channel decoded audio data corresponding to the channel and the second channel decoded audio data corresponding to at least one other channel, to obtain the sound channel Corresponding to mixed audio data;

The mixing channel allocation submodule is used to allocate the mixing audio data corresponding to multiple channels to the audio playback devices corresponding to the multiple channels for playback.

Optionally, the target audio data is generated by the operating system using time division multiplexing technology to combine the first channel decoded audio data of multiple channels.

Embodiments of the present invention also provide a vehicle, including a memory and one or more programs, wherein one or more programs are stored in the memory and configured to be executed by one or more processors. More than one program includes a method for executing the audio playback method described in any embodiment of the present invention.

Embodiments of the present invention also provide a readable storage medium. When instructions in the storage medium are executed by a processor of an electronic device, the electronic device can execute the audio playback method as described in any embodiment of the present invention.

Compared with the prior art, embodiments of the present invention include the following advantages:

In the embodiment of the present invention, the operating system can perform source decoding on the acquired multi-channel original audio data to obtain first-channel decoded audio data of multiple channels; and then decode the first-channel audio data of multiple channels. Merge and generate the corresponding target audio data and send it to the digital signal processor; after the digital signal processor receives the target audio data, it can perform channel decoding on the received target audio data to obtain the second channel corresponding to multiple channels. Decode the audio data and distribute it to audio playback devices corresponding to multiple channels for playback. Furthermore, embodiments of the present invention can decode multi-channel original audio data and play audio data of different channels on different audio playback devices, thereby presenting a true stereo effect in the vehicle.

Description of the drawings

Figure 1 is a step flow chart of an embodiment of an audio playback method of the present invention;

Figure 2 is a step flow chart of an optional embodiment of an audio playback method of the present invention;

Figure 3 is a schematic diagram of the source file content of multi-channel original audio data according to an embodiment of the present invention;

Figure 4 is a schematic diagram of an audio playback processing process according to an embodiment of the present invention;

Figure 5 is a schematic diagram of another audio playback processing process according to the embodiment of the present invention;

Figure 6 is a step flow chart of another optional embodiment of the audio playback method of the present invention;

Figure 7 is a schematic diagram of yet another audio playback processing process according to the embodiment of the present invention;

Figure 8 is a structural block diagram of an embodiment of an audio playback device of the present invention;

Figure 9 is a structural block diagram of an optional embodiment of an audio playback device of the present invention.

Detailed ways

In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

The audio playback method provided by the embodiment of the present invention can be applied to vehicles. Through this method, multi-channel original audio data can be decoded, and after obtaining the audio data of multiple channels, it is assigned to the audio playback device corresponding to each channel; thus, when the vehicle plays the audio data, a stereo effect is presented.

Stereo can refer to sound with a three-dimensional feel. With the continuous development of technology, these stereo sounds can be played back after being recorded, amplified, etc. However, when all the sounds are played from one audio playback device, the playback sound is not three-dimensional. This is because various sounds are played through the same audio playback device, and the original sense of space is also lost. If multiple audio playback devices can be arranged during playback, and sounds of different channels can be played in each audio playback device, then the playback sound with a certain degree of spatial distribution characteristics such as directional layering can be Presents a stereo sound effect.

Referring to Figure 1, a step flow chart of an embodiment of an audio playback method of the present invention is shown, which may specifically include the following steps:

Step 102: The digital signal processor receives target audio data sent by the operating system. The target audio data is generated by the operating system decoding the first channel audio data of multiple channels. The first channel The decoded audio data is generated by the operating system decoding the multi-channel original audio data.

In the embodiment of the present invention, in order to present the stereo effect, multiple audio playback devices can be installed in the vehicle; when the user plays audio data in the vehicle, the stereo effect is presented to the user. Among them, the position of the audio playback equipment installed in the vehicle can be set according to the needs. For example, corresponding audio playback equipment can be set up in five directions on the front, rear, left, and right of the vehicle, which can include: audio playback equipment corresponding to the front left channel, The audio playback device corresponding to the front right channel, the audio playback device corresponding to the rear left channel, the audio playback device corresponding to the rear right channel, and the audio playback device corresponding to the sky channel are not limited in this embodiment of the present invention.

In the embodiment of the present invention, the vehicle is provided with an operating system, a digital signal processor and multiple audio playback devices; the operating system communicates with the digital signal processor, and the digital signal processor communicates with the audio playback device.

Among them, the operating system can obtain multi-channel original audio data, and the multi-channel original audio data can include original audio data of multiple channels. For example, 5-channel original audio data includes 5 channels of original audio data. These 5 channels The channels can be respectively: front left channel, front right channel, rear left channel, rear right channel and sky channel. After the operating system obtains the multi-channel original audio data, it can first decode the source of the multi-channel original audio data to obtain the corresponding multi-channel source decoded audio data; in order to facilitate subsequent differentiation, the multi-channel original audio data can be The audio source decoded audio data obtained after the audio data is decoded is called the first channel decoded audio data. For example, after obtaining the 5-channel original audio data, after the sound source is decoded, the first-channel decoded audio data of the 5-channel can be obtained: the first-channel decoded audio data of the front left channel, the first decoded audio data of the front right channel channel decoded audio data, first channel decoded audio data of the rear left channel, first channel decoded audio data of the rear right channel, and first channel decoded audio data of the sky channel.

Since the number of communication buses of the digital signal processor is limited, in order to save resources, the operating system can combine the first channel decoded audio data of multiple channels to generate target audio data; and then send the target audio data to the The digital signal processor, in turn, can receive the target audio data.

Step 104: Perform channel decoding on the target audio data to obtain second channel decoded audio data corresponding to multiple channels.

Step 106: Allocate the second channel decoded audio data corresponding to the multiple channels to the audio playback devices corresponding to the multiple channels for playback.

In the embodiment of the present invention, after receiving the target audio data, the digital signal processor can perform channel decoding on the target audio data. For example, the target audio data can be separated to obtain channel decoded audio corresponding to multiple channels. data in order to subsequently distribute the channel decoded audio data of different channels to the audio playback device of the corresponding channel. In order to facilitate subsequent distinction, the channel decoded audio data obtained by channel decoding the target audio data by the digital signal processor is called the second channel decoded audio data.

In the embodiment of the present invention, in order to restore the stereo effect more realistically, the second channel decoded audio data corresponding to different channels can be allocated to the audio playback device of the corresponding channel. For example, the second channel decoded audio data of the front left channel is assigned to the front left channel audio playback device, and the second channel decoded audio data of the front right channel is assigned to the front right channel audio playback device. The present invention implements There is no restriction on this.

In the embodiment of the present invention, after each second channel decoded audio data is allocated to the audio playback device of the corresponding channel, since each audio playback device plays sounds of different channels, the sound effect presented is also closer to Real stereo sound effect.

In summary, in the embodiment of the present invention, the operating system can perform source decoding on the acquired multi-channel original audio data to obtain the first channel decoded audio data of multiple channels; and then decode the first channel of the multiple channels. The decoded audio data is combined to generate corresponding target audio data and sent to the digital signal processor; after the digital signal processor receives the target audio data, it can perform channel decoding on the received target audio data to obtain the third channel corresponding to multiple channels. Two-channel decoded audio data is allocated to audio playback devices corresponding to multiple channels for playback. Furthermore, embodiments of the present invention can decode multi-channel original audio data and play audio data of different channels on different audio playback devices, thereby presenting a true stereo effect in the vehicle.

Referring to Figure 2, a step flow chart of an optional embodiment of an audio playback method of the present invention is shown, which may specifically include the following steps:

Step 202: The digital signal processor receives the target audio data sent by the operating system.

In the embodiment of the present invention, the operating system in the vehicle can obtain multi-channel original audio data in a variety of ways; for example, after the user connects the vehicle to the mobile phone via Bluetooth, the operating system obtains the multi-channel original audio data selected by the user from the mobile phone. ; Another example is that the user directly imports the multi-channel original audio data into the operating system of the vehicle; or another example is that after the vehicle is connected to the Internet, the multi-channel original audio data is obtained from the audio library, and the embodiment of the present invention does not limit this.

In the embodiment of the present invention, the audio source decoding methods corresponding to different audio data file types are also different, and the embodiment of the present invention does not limit this.

Taking the file format of multi-channel original audio data as wav format as an example, we will illustrate the process of audio source decoding of multi-channel original audio data by the operating system:

First, the operating system is started, and the operating system obtains the format information and source file content of the multi-channel original audio data.

Secondly, the operating system determines the number of channels corresponding to the multi-channel original audio data and the position of the multi-channel original audio data in the source file content based on the format information and the source file content. According to the corresponding format information of the wav format, it can be determined that the Channels Num (number of channels) in the 22nd to 23rd bytes of the source file content represents the number of channels of the multi-channel original audio data. And it can be determined that the multi-channel original audio data is stored starting from the 44th byte in the source file content. For example, the content "00 05" in bytes 22-23 in Figure 3 indicates that the number of channels of the multi-channel original audio data file is "5".

Thirdly, the operating system performs audio source decoding on the multi-channel original audio data according to the number of channels of the multi-channel original audio data and the position of the source file content. As shown in Figure 3, the data of one channel can be marked with 16 bits, occupying 2 bytes; therefore, starting from the 44th byte, 10 bytes can be read each time, which is five-channel data, and then 5 can be obtained The first channel of the channels decodes the audio data.

In the embodiment of the present invention, the target audio data is generated by the operating system using time division multiplexing technology to combine the first channel decoded audio data of multiple channels.

In the embodiment of the present invention, time division multiplexing technology can be used to divide the time for transmitting information on the entire channel into several time slices, and then allocate these time slices to different first channel decoded audio data, thereby decoding multiple audio data. The decoded audio data of the first channel are combined to generate target audio data, and then the target audio data is sent to the digital signal processor.

Step 204: Perform channel decoding on the target audio data to obtain second channel decoded audio data corresponding to multiple channels.

In the embodiment of the present invention, after receiving the target audio data, the digital signal processor separates the target audio data and generates second channel decoded audio data corresponding to multiple channels.

Step 206: Perform at least one of the following preprocessing on each second channel decoded audio data: volume adjustment, smoothing processing, and EQ adjustment.

In the embodiment of the present invention, in order to further improve the user's listening experience, each second channel decoded audio data can also be preprocessed separately.

In an optional embodiment of the present invention, the volume of each second channel decoded audio data can be adjusted. For example, increasing or attenuating the volume of a certain second channel decoded audio data is not limited in this embodiment of the present invention.

In an optional embodiment of the present invention, sound smoothing processing can also be performed on the second channel decoded audio data. For example, audio curves can be smoothed using a smoothing algorithm.

In an optional embodiment of the present invention, EQ adjustment can also be performed on the decoded audio data of the second channel to increase or decrease the gain of a certain frequency point to achieve corresponding sound effects. For example, vocal, rock, classical, heavy metal and other effects when playing music.

Of course, other preprocessing of audio data may also be included, and the embodiment of the present invention does not limit this.

In the embodiment of the present invention, the above-mentioned single preprocessing method can be used to preprocess the second channel decoded audio data, or a combination of multiple methods can be used to preprocess the second channel decoded audio data. The present invention The embodiment does not limit this.

Step 208: Search the preset mapping relationship according to the channels corresponding to the decoded audio data of each second channel, and determine the audio playback device corresponding to each channel.

In the embodiment of the present invention, the mapping relationship between each audio channel and each audio playback device can be set in advance. Among them, the audio playback device corresponding to each channel can be determined, and then the channel identifier of each channel and the device identifier of the corresponding audio playback device can be used to generate a mapping relationship. For example, the left channel corresponds to the audio playback device on the left front of the vehicle, and the right channel corresponds to the audio playback device on the right front of the vehicle; then a mapping between the channel identifier of the left channel and the device identifier of the audio playback device on the left front of the vehicle is established. and establish a mapping relationship between the channel identifier of the right channel and the device identifier of the audio playback device on the right front of the vehicle, which is not limited by the embodiment of the present invention.

In the embodiment of the present invention, the channel corresponding to the decoded audio data of the second channel can be determined first, and then the channel identifier corresponding to the channel is determined; according to the mapping relationship, the device identifier corresponding to the channel identifier is searched, thereby Determine the audio playback device corresponding to the audio channel.

Step 210: Convert the second channel decoded audio data corresponding to the multiple channels into corresponding analog signals, and drive the audio playback devices corresponding to the multiple channels to play.

In the embodiment of the present invention, the second channel decoded audio data is a digital signal, so the digital signal of the second channel decoded audio data can be converted into a corresponding analog signal, and then the corresponding analog signals of the multiple channels Send them to the corresponding audio playback device respectively to drive the audio playback device to play.

Referring to Figure 4, in one example of the present invention, after the operating system decodes the source of the multi-channel original target audio data, it obtains 5 first channel decoded audio data: the first channel corresponding to the front left channel Decoded audio data, the first channel decoded audio data corresponding to the front right channel, the first channel decoded audio data corresponding to the rear left channel, the first channel decoded audio data corresponding to the rear right channel, and the sky channel corresponding The first channel decoded audio data; then the operating system combines the five first channel decoded audio data into target audio data through time division multiplexing technology, and then sends it to the digital signal processor; then the digital signal processor processes the target audio data Perform channel decoding to obtain corresponding 5 second channel decoded audio data, and perform preprocessing on them; then distribute each second channel decoded audio data to the audio playback device of the corresponding channel for playback.

Referring to Figure 5, in another example of the present invention, when the digital signal processor preprocesses the second channel decoded audio data, it can perform volume adjustment, smoothing and EQ adjustment in sequence; and then the preprocessed The decoded audio data of the second channel is respectively distributed to the audio playback device of the corresponding channel for playback.

Referring to Figure 6, a step flow chart of another optional embodiment of the audio playback method of the present invention is shown, which may specifically include the following steps:

Step 602: The digital signal processor receives the target audio data sent by the operating system.

Step 604: Perform channel decoding on the target audio data to obtain second channel decoded audio data corresponding to multiple channels.

Step 606: Perform at least one of the following preprocessing on each second channel decoded audio data: volume adjustment, smoothing and EQ adjustment.

Steps 602 to 606 are similar to the above steps 202 to 206, and will not be described again here.

Step 608: For one channel, mix the second channel decoded audio data corresponding to the channel and the second channel decoded audio data corresponding to at least one other channel to obtain the mixed audio corresponding to the channel. data.

Step 610: Allocate the mixed audio data corresponding to the multiple channels to the audio playback devices corresponding to the multiple channels for playback.

In the embodiment of the present invention, in order to achieve more sound effects, the decoded audio data of the second channel corresponding to at least two channels can be mixed.

Let’s take one channel as an example to illustrate how to generate a mix of that channel. In the embodiment of the present invention, for this channel, the second channel decoded audio data corresponding to the channel can be mixed with the second channel decoded audio data corresponding to another channel to obtain the decoded audio data corresponding to the channel. Mix audio data. Other channels may refer to channels other than this channel. For example, there are 5 second channels of decoded audio data: A, B, C, D and E, corresponding to 5 channels: a, b, c, d and e; then the second channel of channel a is decoded Audio data A is mixed with the second channel decoded audio data B of channel b to obtain mixed audio data A ⁺ of channel a.

In the embodiment of the present invention, the decoded audio data of the second channel corresponding to the channel may also be mixed with the decoded audio data of the second channel corresponding to at least two other channels to obtain a mixed sound corresponding to the channel. audio data. For example, there are 5 second channels of decoded audio data: A, B, C, D and E, corresponding to 5 channels: a, b, c, d and e; then the second channel of channel c is decoded The audio data C is mixed with the second channel decoded audio data B of channel b and the second channel decoded audio data A of channel a to obtain mixed audio data C ⁺ of channel c.

In the embodiment of the present invention, for each channel, the second channel decoded audio data corresponding to the channel and the second channel decoded audio data corresponding to at least one other channel can be mixed; some audio channels can also be mixed. For each channel in the channel, the decoded audio data of the second channel corresponding to the channel is mixed with the decoded audio data of the second channel corresponding to at least one other channel. This is not limited in the embodiment of the present invention.

In the embodiment of the present invention, the mixed audio data corresponding to multiple channels obtained after mixing can be allocated to audio playback devices corresponding to the multiple channels for playback.

Referring to Figure 7, in another example of the present invention, when the digital signal processor preprocesses the second channel decoded audio data, it sequentially performs preprocessing of volume adjustment, smoothing and EQ adjustment; and then performs preprocessing on the second channel. The channel decodes the audio data for mixing processing; the digital signal processor then distributes the processed mixed audio data to the audio playback device of the corresponding channel for playback.

In summary, in the embodiment of the present invention, preprocessing such as volume processing, smoothing processing, EQ adjustment, etc. is performed on the decoded audio data of the second channel; thus, a high-quality stereo effect can be presented, further improving the user experience.

Secondly, after obtaining the second channel decoded audio data, multiple second channel decoded audio data are mixed to play sounds with a variety of sound effects, thereby meeting users' various needs for sound effects.

It should be noted that for the sake of simple description, the method embodiments are expressed as a series of action combinations. However, those skilled in the art should know that the embodiments of the present invention are not limited by the described action sequence because According to embodiments of the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily necessary for the embodiments of the present invention.

Referring to Figure 8, a structural block diagram of an embodiment of an audio playback device according to the present invention is shown. Specifically, it may include the following modules:

Receiving module 802, configured for the digital signal processor to receive target audio data sent by the operating system. The target audio data is generated by the operating system decoding the audio data of the first channel of multiple channels. One-channel decoded audio data is generated by the operating system decoding multi-channel original audio data;

The channel decoding module 804 is used to perform channel decoding on the target audio data to obtain second channel decoded audio data corresponding to multiple channels;

The allocation module 806 is used to allocate the second channel decoded audio data corresponding to the multiple channels to the audio playback devices corresponding to the multiple channels for playback.

Referring to Figure 9, a structural block diagram of an optional embodiment of an audio playback device according to the present invention is shown. Specifically, it may include the following modules:

In an optional embodiment of the present invention, the device further includes:

The preprocessing module 808 is configured to perform at least one of the following preprocessing on each second channel decoded audio data: volume adjustment, smoothing processing, and EQ adjustment.

In an optional embodiment of the present invention, the second channel decoded audio data is a digital signal, and the distribution module 806 includes:

The device determination sub-module 8062 is used to search for the preset mapping relationship based on the channels corresponding to the decoded audio data of each second channel, and determine the audio playback device corresponding to each channel;

The conversion driving sub-module 8064 is used to convert the second channel decoded audio data corresponding to multiple channels into corresponding analog signals, and drive the audio playback equipment corresponding to the multiple channels to play.

In an optional embodiment of the present invention, the allocation module 806 includes:

The mixing sub-module 8066 is used for mixing, for one channel, the second channel decoded audio data corresponding to the channel and the second channel decoded audio data corresponding to at least one other channel to obtain the audio The channel corresponds to the mixed audio data;

The mixing channel allocation sub-module 8068 is used to allocate the mixing audio data corresponding to multiple channels to the audio playback devices corresponding to the multiple channels for playback.

In an optional embodiment of the present invention, the target audio data is generated by the operating system using time division multiplexing technology to combine the first channel decoded audio data of multiple channels.

In summary, in the embodiment of the present invention, the operating system can perform source decoding on the acquired multi-channel original audio data to obtain the first channel decoded audio data of multiple channels; and then decode the first channel of the multiple channels. The decoded audio data is combined to generate corresponding target audio data and sent to the digital signal processor; after the digital signal processor receives the target audio data, it can perform channel decoding on the received target audio data to obtain the third channel corresponding to multiple channels. Two-channel decoded audio data is allocated to audio playback devices corresponding to multiple channels for playback. Furthermore, embodiments of the present invention can decode multi-channel original audio data and play audio data of different channels on different audio playback devices, thereby presenting a true stereo effect in the vehicle.

As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple. For relevant details, please refer to the partial description of the method embodiment.

Embodiments of the present invention also provide a vehicle, including a memory and one or more programs, wherein one or more programs are stored in the memory and configured to be executed by one or more processors. More than one program includes a method for executing the audio playback method described in any embodiment of the present invention.

Embodiments of the present invention also provide a readable storage medium. When instructions in the storage medium are executed by a processor of an electronic device, the electronic device can execute the audio playback method as described in any embodiment of the present invention.

Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on its differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other.

It should be understood by those skilled in the art that embodiments of the present invention may be provided as methods, devices, or computer program products. Thus, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, embodiments of the invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

Embodiments of the invention are described with reference to flowcharts and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine such that the instructions are executed by the processor of the computer or other programmable data processing terminal device. Means are generated for implementing the functions specified in the process or processes of the flowchart diagrams and/or the block or blocks of the block diagrams.

These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing terminal equipment to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the The instruction means implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, so that a series of operating steps are performed on the computer or other programmable terminal equipment to produce computer-implemented processing, thereby causing the computer or other programmable terminal equipment to perform a computer-implemented process. The instructions executed on provide steps for implementing the functions specified in a process or processes of the flow diagrams and/or a block or blocks of the block diagrams.

Although preferred embodiments of the embodiments of the present invention have been described, those skilled in the art will be able to make additional changes and modifications to these embodiments once the basic inventive concepts are apparent. Therefore, it is intended that the appended claims be construed to include the preferred embodiments and all changes and modifications that fall within the scope of embodiments of the invention.

Finally, it should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or any such actual relationship or sequence between operations. Furthermore, the terms "comprises," "comprises," or any other variation thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or end device that includes a list of elements includes not only those elements, but also elements not expressly listed or other elements inherent to such process, method, article or terminal equipment. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or terminal device including the stated element.

An audio playback method, an audio playback device and a vehicle provided by the present invention have been introduced in detail above. Specific examples are used in this article to illustrate the principles and implementations of the present invention. The description of the above embodiments It is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the field, there will be changes in the specific implementation and application scope based on the idea of the present invention. In summary, The content of this description should not be construed as limiting the invention.

Claims (9)

1. An audio playback method for use in a vehicle provided with an operating system, a digital signal processor, and a plurality of audio playback devices, the method comprising:

the digital signal processor receives target audio data sent by an operating system, wherein the target audio data is generated by combining first channel decoding audio data of a plurality of channels by the operating system, and the first channel decoding audio data is generated by performing audio source decoding on multi-channel original audio data by the operating system; the target audio data is generated by combining first channel decoding audio data of a plurality of channels by the operating system through a time division multiplexing technology;

separating the target audio data to obtain second decoded audio data corresponding to a plurality of sound channels;

and respectively distributing the second channel decoding audio data corresponding to the plurality of channels to audio playing equipment corresponding to the plurality of channels for playing.

2. The method of claim 1, wherein the method further comprises:

each second channel decoded audio data is subjected to at least one of the following preprocessing: volume adjustment, smoothing, and EQ equalizer adjustment.

3. The method according to claim 1, wherein the second channel decoded audio data is a digital signal, and the allocating the second channel decoded audio data corresponding to the plurality of channels to the audio playing devices corresponding to the plurality of channels to play respectively includes:

searching a preset mapping relation according to the sound channels corresponding to the second sound channel decoding audio data, and determining audio playing equipment corresponding to the sound channels;

and respectively converting the second decoded audio data corresponding to the multiple channels into corresponding analog signals, and driving the audio playing equipment corresponding to the multiple channels to play.

4. The method according to claim 1, wherein the decoding the second audio data corresponding to the plurality of channels and respectively distributing the second decoded audio data to the audio playing devices corresponding to the plurality of channels for playing, includes:

for one sound channel, mixing second decoded audio data corresponding to the sound channel with second decoded audio data corresponding to at least one other sound channel to obtain mixed audio data corresponding to the sound channel;

and respectively distributing the audio data of the mixed sound corresponding to the plurality of sound channels to audio playing equipment corresponding to the plurality of sound channels for playing.

5. An audio playing device, characterized in that, applied in a vehicle, the vehicle is provided with an operating system, a digital signal processor and a plurality of audio playing equipment, the device is arranged at the digital signal processor side, the device comprises:

the receiving module is used for receiving target audio data sent by an operating system, wherein the target audio data is generated by combining first channel decoding audio data of a plurality of channels by the operating system, and the first channel decoding audio data is generated by performing audio source decoding on multi-channel original audio data by the operating system; the target audio data is generated by combining first channel decoding audio data of a plurality of channels by the operating system through a time division multiplexing technology;

the sound channel decoding module is used for separating the target audio data to obtain second sound channel decoding audio data corresponding to a plurality of sound channels;

and the distribution module is used for distributing the second channel decoding audio data corresponding to the plurality of channels to the audio playing devices corresponding to the plurality of channels for playing.

6. The apparatus of claim 5, wherein said apparatus further comprises:

the preprocessing module is used for preprocessing at least one of the following steps of: volume adjustment, smoothing, and EQ adjustment.

7. The apparatus of claim 5, wherein the second channel decoded audio data is a digital signal, and wherein the allocation module comprises:

the equipment determining submodule is used for searching a preset mapping relation according to the sound channels corresponding to the second sound channel decoding audio data and determining audio playing equipment corresponding to the sound channels;

the conversion driving sub-module is used for respectively converting the second channel decoding audio data corresponding to the plurality of channels into corresponding analog signals and driving the audio playing equipment corresponding to the plurality of channels to play.

8. A vehicle comprising a memory and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by one or more processors, the one or more programs comprising instructions for performing the audio playback method of any one of claims 1-4.

9. A readable storage medium, characterized in that instructions in said storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the audio playback method of any one of the method claims 1-4.