CN107749299B - Multi-audio output method and device - Google Patents
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- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
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- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
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Abstract
The invention provides a multi-audio output method and a device, wherein the method comprises the following steps: the processor receives a plurality of groups of audio stream data, classifies the audio stream data according to preset configuration information, resamples and mixes audio streams belonging to the same output type to obtain mixed audio data, synthesizes the mixed audio data or the audio stream data which is not subjected to mixed audio processing according to a preset synthesis rule to obtain audio synthesis data, and transmits the audio synthesis data to an audio codec; and the audio coder-decoder receives the audio synthesis data, separates the audio synthesis data according to a separation rule corresponding to a preset synthesis rule, and respectively transmits the separated mixed audio data or audio stream data which is not subjected to mixed audio processing to corresponding output equipment for output. The invention can enable the equipment with a single audio output interface to simultaneously separate and output multiple audios, thereby effectively reducing the hardware cost and improving the user experience.
Description
Technical Field
The present invention relates to the field of audio output processing, and in particular, to a multi-audio output method and apparatus.
Background
As the intelligent system goes deep into each field, the configuration of hardware devices also goes high all the way, and more demands are needed for a single device to simultaneously consider different scenes. Among them, the use scenario of separate output of multiple audios is particularly critical.
As shown in fig. 1, to support multiple audio outputs, a conventional single device usually needs to have multiple audio output interfaces at the same time, for example, two sets of I2S, or one set of I2S and one set of PCM interfaces, which is relatively expensive. When the audio output interface has pin multiplexing or the device does not have so many audio output interfaces, the function of outputting multiple audio frequencies simultaneously by different hardware cannot be completed, and the user experience is influenced.
Disclosure of Invention
Therefore, a technical scheme of multi-audio output is required to be provided to solve the problem that the user experience is poor due to the fact that the existing equipment without a plurality of audio output interfaces cannot support multi-audio separation at the same time.
To achieve the above object, the inventors provide a multi-audio output apparatus including a processor, an audio codec, a storage medium, and at least one output device; the processor is connected with an audio codec, the processor is connected with a storage medium, and the audio codec is connected with an output device; the storage medium stores a computer program which, when executed by a processor, performs the steps of:
receiving a plurality of groups of audio stream data, and classifying the audio stream data according to preset configuration information, wherein the preset configuration information comprises corresponding output parameters when the output equipment outputs data;
resampling and mixing audio streams belonging to the same output type to obtain mixed audio data;
synthesizing the mixed sound data or the audio stream data which is not subjected to mixed sound processing according to a preset synthesis rule to obtain audio synthesized data, and transmitting the audio synthesized data to an audio codec;
the audio codec is used for receiving the audio synthetic data, separating the audio synthetic data according to a separation rule corresponding to a preset synthetic rule, and respectively transmitting the separated audio mixing data or audio stream data which is not subjected to audio mixing processing to corresponding output equipment for output.
Further, the computer program when executed by a processor further realizes the steps of:
judging whether the current device is in a multi-audio output mode, if so, synthesizing the audio mixing data and the audio stream data which is not subjected to audio mixing processing according to a preset synthesis rule to obtain audio synthesis data; otherwise, directly outputting the audio data or the audio stream data without sound mixing processing.
Further, the audio codec is configured to determine a preset synthesis rule according to the corresponding output parameter when the output device outputs data and the audio synthesis data, and determine a corresponding separation rule according to the determined preset synthesis rule.
Further, the audio codec is configured to determine whether the current apparatus is in a multi-device output mode, if so, separate audio synthesis data according to a separation rule corresponding to a preset synthesis rule, and respectively transmit the separated audio mixing data or audio stream data that is not subjected to audio mixing processing to a plurality of different output devices for output; otherwise, the audio synthetic data is directly transmitted to the corresponding output equipment for output.
The inventor also provides a multi-audio output method, which is applied to a multi-audio output device; the apparatus includes a processor, an audio codec, and at least one output device; the processor is connected with an audio codec, and the audio codec is connected with an output device; the method comprises the following steps:
the processor receives a plurality of groups of audio stream data and classifies the audio stream data according to preset configuration information, wherein the preset configuration information comprises corresponding output parameters when the output equipment outputs data;
the processor performs resampling and audio mixing processing on audio streams belonging to the same output type to obtain audio mixing data;
the processor synthesizes the mixed sound data or the audio stream data which is not subjected to the mixed sound processing according to a preset synthesis rule to obtain audio synthesis data, and transmits the audio synthesis data to an audio coder-decoder;
and the audio coder-decoder receives the audio synthesis data, separates the audio synthesis data according to a separation rule corresponding to a preset synthesis rule, and respectively transmits the separated mixed audio data or audio stream data which is not subjected to mixed audio processing to corresponding output equipment for output.
Further, the method further comprises the steps of:
the processor judges whether the current device is in a multi-audio output mode, if so, the processor synthesizes the audio mixing data and the audio stream data which are not subjected to audio mixing processing according to a preset synthesis rule to obtain audio synthesis data; otherwise, directly outputting the audio data or the audio stream data without sound mixing processing.
Further, the method further comprises the steps of:
the audio codec determines a preset synthesis rule according to the corresponding output parameter when the output device outputs data and the audio synthesis data, and determines a corresponding separation rule according to the determined preset synthesis rule.
Further, the method comprises:
the audio codec judges whether the current device is in a multi-device output mode, if so, separates the audio synthesis data according to a separation rule corresponding to a preset synthesis rule, and respectively transmits the separated audio mixing data or audio streaming data which is not subjected to audio mixing processing to a plurality of different output devices for output; otherwise, the audio synthetic data is directly transmitted to the corresponding output equipment for output.
Different from the prior art, the multi-audio output method and the device in the technical scheme comprise the following steps: the processor receives a plurality of groups of audio stream data, classifies the audio stream data according to preset configuration information, resamples and mixes audio streams belonging to the same output type to obtain mixed audio data, synthesizes the mixed audio data or the audio stream data which is not subjected to mixed audio processing according to a preset synthesis rule to obtain audio synthesis data, and transmits the audio synthesis data to an audio codec; and the audio coder-decoder receives the audio synthesis data, separates the audio synthesis data according to a separation rule corresponding to a preset synthesis rule, and respectively transmits the separated mixed audio data or audio stream data which is not subjected to mixed audio processing to corresponding output equipment for output. The invention can enable the equipment with a single audio output interface to simultaneously separate and output multiple audios, thereby effectively reducing the hardware cost and improving the user experience.
Drawings
Fig. 1 is a schematic structural diagram of a conventional multi-audio output device according to the background art;
FIG. 2 is a schematic structural diagram of a multi-audio output device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a multi-audio output device according to another embodiment of the present invention;
FIG. 4 is a diagram illustrating a predetermined synthesis rule according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a default synthesis rule according to another embodiment of the present invention;
FIG. 6 is a flowchart illustrating a multi-audio output method according to an embodiment of the invention;
description of reference numerals:
101. a processor;
102. an audio codec;
103. a storage medium;
104. and (6) an output device.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Please refer to fig. 3, which is a schematic structural diagram of a multi-audio output device according to another embodiment of the present invention. The device is an electronic device with audio processing and audio output functions, such as a tablet computer, a personal computer, a mobile phone terminal and the like. The apparatus comprises a processor 101, an audio codec 102, a storage medium 103, and at least one output device 104; the processor 101 is connected to an audio codec 102, and the audio codec 102 is connected to an output device 104. As shown in fig. 2, the processor may be a CPU, and the CPU and the Audio Codec (i.e., Audio Codec) are connected through an I2S Audio bus. The output device includes a bluetooth device (such as bluetooth in fig. 2), a headset wearing device (such as headset in fig. 2), a microphone device (such as speaker in fig. 2), and the like.
The storage medium 103 is connected to the processor 101, the storage medium 103 storing a computer program which, when executed by the processor, performs the steps of:
and receiving a plurality of groups of audio stream data, and classifying the audio stream data according to preset configuration information. The preset configuration information comprises corresponding output parameters when the output equipment outputs data. The output parameters comprise one or more of sampling rate, channel number and output precision of the output device. By classifying the audio stream data, the output device which outputs each audio stream data finally is judged, and preparation is made for separating subsequent multi-audio data
And then resampling and mixing audio streams belonging to the same output type to obtain mixed audio data. For example, three groups of audio stream data of multimedia sound, notification ring tone and VOIP voice are simultaneously presented and need to be output on one device, the multimedia sound and the notification ring tone can be set as a microphone device (such as a loudspeaker) for output, and the VOIP voice is set as Bluetooth output. Because the multimedia sound and the notification ring sound belong to the same output type (namely, the multimedia sound and the notification ring sound are output through the same output equipment), the multimedia sound and the notification ring sound are firstly resampled, so that the sampling rate after resampling reaches the sampling rate supported by the microphone equipment, and then the multimedia sound and the notification ring sound are mixed and processed, so that the multimedia sound and the notification ring sound can be further synthesized and output in the following process.
And synthesizing the mixed sound data or the audio stream data which is not subjected to the mixed sound processing according to a preset synthesis rule to obtain audio synthesis data, and transmitting the audio synthesis data to an audio codec. Among all audio stream data that need to be output synchronously, there may be only one or more audio stream data of a certain output type. Thus, after classifying groups of audio stream data, the following situations may occur: (1) more than two audio stream data of each output type are provided; (2) there are more than two of the at least one output type of audio stream data, and there is only one of the at least one output type of audio stream data. Therefore, the audio synthesis data may be synthesized by the following organization: (1) synthesizing a plurality of groups of mixed sound data; (2) synthesizing a group of mixed sound data and a plurality of groups of audio stream data which are not subjected to mixed sound processing; (3) synthesizing a plurality of groups of mixed sound data and a group of audio stream data which is not subjected to mixed sound processing; (4) and synthesizing a plurality of groups of audio stream data which are not subjected to sound mixing processing.
And after the audio synthesis data are transmitted to the audio codec, the audio codec is used for receiving the audio synthesis data, performing lossless separation on the audio synthesis data according to a separation rule corresponding to a preset synthesis rule, and respectively transmitting the separated audio mixing data or audio stream data which is not subjected to audio mixing processing to corresponding output equipment for output. Further, the audio codec is configured to determine a preset synthesis rule according to the corresponding output parameter when the output device outputs data and the audio synthesis data, and determine a corresponding separation rule according to the determined preset synthesis rule. The audio codec can obtain corresponding output parameters when each output device outputs data by reading the hardware output list.
Fig. 4 is a schematic diagram of a preset synthesis rule according to an embodiment of the present invention. The preset synthesis rule is to synthesize based on the extended output precision, specifically, under the condition that the output precision of the audio stream data of each output type is consistent (for example, 16bit/8bit), the audio synthesis data is obtained by synthesizing the audio mixing data or the audio stream data which is not subjected to the audio mixing processing through the extended output precision according to the sampling rate frequency multiplication relation.
Fig. 5 is a schematic diagram of a preset synthesis rule according to another embodiment of the present invention. The preset synthesis rule is based on outputting the audio synthesis data at a higher sampling rate, for example, the output accuracy of the synthesized audio synthesis data is the highest output accuracy, which is the maximum value of the output accuracy in the mixed sound data for synthesizing the audio synthesis data or the audio stream data without being subjected to the mixed sound processing. The channel number of the synthesized audio synthesis data is the highest channel number, and the highest channel number is the maximum value of the channel number in the mixed audio data for synthesizing the audio synthesis data or the audio stream data which is not subjected to mixed audio processing. In other embodiments, the preset synthesis rule may be selected by self-definition according to actual needs, and only the requirement that the sampling rate of the audio synthesis data can support the combination of multiple sets of audio output sampling rates is met.
To better control the multi-audio output of a single device, in certain embodiments the computer program when executed by the processor further implements the steps of: judging whether the current device is in a multi-audio output mode, if so, synthesizing the audio mixing data and the audio stream data which is not subjected to audio mixing processing according to a preset synthesis rule to obtain audio synthesis data; otherwise, directly outputting the audio data or the audio stream data without sound mixing processing. Whether the device has multiple audio output modes can be judged according to whether the processor receives corresponding touch instructions. In short, when the apparatus is in a state of outputting multiple audio devices simultaneously (that is, multiple sets of audio stream data need to be output simultaneously through the same or different output devices), the audio stream data are synthesized, otherwise, no synthesis processing is performed, the audio stream data are sequentially output to the audio codec one by one, and after receiving the audio stream data, the audio codec transmits each audio stream data to the corresponding output device for output.
In some embodiments, the audio codec is configured to determine whether the current apparatus is in a multi-device output mode, if so, separate audio synthesis data according to a separation rule corresponding to a preset synthesis rule, and respectively transmit the separated audio mixing data or audio stream data that is not subjected to audio mixing processing to a plurality of different output devices for output; otherwise, the audio synthetic data is directly transmitted to the corresponding output equipment for output. For example, two sets of audio stream data, i.e., multimedia sound and notification ring tone, appear simultaneously, and both the multimedia sound and the notification ring tone can be output through a microphone device (such as a loudspeaker), the multimedia sound and the notification ring tone can be resampled and mixed first to obtain mixed data, and the mixed data is transmitted to an audio codec. The audio codec decides that it is not currently in the multi-device output mode (i.e., audio data of only one output type), and thus does not perform lossless separation on the mixed sound data, but directly transmits the mixed sound data to the microphone device for output. Therefore, the audio codec can perform lossless separation on the audio synthetic data only in the multi-device output mode, and the power consumption of the device is saved.
Fig. 6 is a flowchart of a multi-audio output method according to an embodiment of the invention. The method is applied to a multi-audio output device; the apparatus includes a processor, an audio codec, and at least one output device; the processor is connected with an audio codec, and the audio codec is connected with an output device; the method comprises the following steps:
the method first proceeds to step S601, where the processor receives a plurality of sets of audio stream data and classifies the audio stream data according to preset configuration information. The preset configuration information comprises corresponding output parameters when the output equipment outputs data.
Then, the processor performs resampling and audio mixing processing on the audio streams belonging to the same output type in step S602 to obtain audio mixing data.
Then, the processor in step S603 synthesizes the audio mixing data or the audio stream data without audio mixing processing according to a preset synthesis rule to obtain audio synthesis data, and transmits the audio synthesis data to the audio codec. In certain embodiments, the method further comprises the steps of: the audio codec determines a preset synthesis rule according to the corresponding output parameter when the output device outputs data and the audio synthesis data, and determines a corresponding separation rule according to the determined preset synthesis rule.
And then, in step S604, the audio codec receives the audio synthesis data, separates the audio synthesis data according to a separation rule corresponding to a preset synthesis rule, and transmits the separated audio mixing data or the audio stream data without audio mixing processing to corresponding output devices for output.
To better control the multi-audio output of a single device, in some embodiments, the method further comprises the steps of: the processor judges whether the current device is in a multi-audio output mode, if so, the processor synthesizes the audio mixing data and the audio stream data which are not subjected to audio mixing processing according to a preset synthesis rule to obtain audio synthesis data; otherwise, directly outputting the audio data or the audio stream data without sound mixing processing.
To better control the multi-audio output of a single device, in some embodiments, the method comprises: the audio codec judges whether the current device is in a multi-device output mode, if so, separates the audio synthesis data according to a separation rule corresponding to a preset synthesis rule, and respectively transmits the separated audio mixing data or audio streaming data which is not subjected to audio mixing processing to a plurality of different output devices for output; otherwise, the audio synthetic data is directly transmitted to the corresponding output equipment for output.
The invention provides a multi-audio output method and a device, wherein the method comprises the following steps: the processor receives a plurality of groups of audio stream data, classifies the audio stream data according to preset configuration information, resamples and mixes audio streams belonging to the same output type to obtain mixed audio data, synthesizes the mixed audio data or the audio stream data which is not subjected to mixed audio processing according to a preset synthesis rule to obtain audio synthesis data, and transmits the audio synthesis data to an audio codec; and the audio coder-decoder receives the audio synthesis data, separates the audio synthesis data according to a separation rule corresponding to a preset synthesis rule, and respectively transmits the separated mixed audio data or audio stream data which is not subjected to mixed audio processing to corresponding output equipment for output. The invention can enable the equipment with a single audio output interface to simultaneously separate and output multiple audios, thereby effectively reducing the hardware cost and improving the user experience.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.
Claims (8)
1. A multi-audio output apparatus, comprising a processor, an audio codec, a storage medium, and at least one output device; the processor is connected with an audio codec, the processor is connected with a storage medium, and the audio codec is connected with an output device; the storage medium stores a computer program which, when executed by a processor, performs the steps of:
receiving a plurality of groups of audio stream data, and classifying the audio stream data according to preset configuration information, wherein the preset configuration information comprises corresponding output parameters when the output equipment outputs data;
resampling and mixing audio streams belonging to the same output type to obtain mixed audio data;
synthesizing the mixed sound data or the audio stream data which is not subjected to mixed sound processing according to a preset synthesis rule to obtain audio synthesized data, and transmitting the audio synthesized data to an audio codec;
the audio codec is used for receiving the audio synthetic data, separating the audio synthetic data according to a separation rule corresponding to a preset synthetic rule, and respectively transmitting the separated audio mixing data or audio stream data which is not subjected to audio mixing processing to corresponding output equipment for output.
2. The multi-audio output device of claim 1, wherein the computer program when executed by the processor further performs the steps of:
judging whether the current device is in a multi-audio output mode, if so, synthesizing the audio mixing data and the audio stream data which is not subjected to audio mixing processing according to a preset synthesis rule to obtain audio synthesis data; otherwise, directly outputting the audio data or the audio stream data without sound mixing processing.
3. The multi-audio output apparatus of claim 1, wherein the audio codec is configured to determine a predetermined synthesis rule according to the corresponding output parameter when the output device outputs the data and the audio synthesis data, and determine a corresponding separation rule according to the determined predetermined synthesis rule.
4. The multi-audio output apparatus according to claim 1 or 3, wherein the audio codec is configured to determine whether the current apparatus is in a multi-device output mode, if so, separate the audio synthesis data according to a separation rule corresponding to a preset synthesis rule, and respectively transmit the separated audio mixing data or the audio stream data that is not subjected to audio mixing processing to a plurality of different output devices for output; otherwise, the audio synthetic data is directly transmitted to the corresponding output equipment for output.
5. A multi-audio output method is applied to a multi-audio output device; the apparatus includes a processor, an audio codec, and at least one output device; the processor is connected with an audio codec, and the audio codec is connected with an output device; the method comprises the following steps:
the processor receives a plurality of groups of audio stream data and classifies the audio stream data according to preset configuration information, wherein the preset configuration information comprises corresponding output parameters when the output equipment outputs data;
the processor performs resampling and audio mixing processing on audio streams belonging to the same output type to obtain audio mixing data;
the processor synthesizes the mixed sound data or the audio stream data which is not subjected to the mixed sound processing according to a preset synthesis rule to obtain audio synthesis data, and transmits the audio synthesis data to an audio coder-decoder;
and the audio coder-decoder receives the audio synthesis data, separates the audio synthesis data according to a separation rule corresponding to a preset synthesis rule, and respectively transmits the separated mixed audio data or audio stream data which is not subjected to mixed audio processing to corresponding output equipment for output.
6. The multi-audio output method of claim 5, further comprising the steps of:
the processor judges whether the current device is in a multi-audio output mode, if so, the processor synthesizes the audio mixing data and the audio stream data which are not subjected to audio mixing processing according to a preset synthesis rule to obtain audio synthesis data; otherwise, directly outputting the audio data or the audio stream data without sound mixing processing.
7. The multi-audio output method of claim 5, further comprising the steps of:
the audio codec determines a preset synthesis rule according to the corresponding output parameter when the output device outputs data and the audio synthesis data, and determines a corresponding separation rule according to the determined preset synthesis rule.
8. A multi-audio output method according to claim 5 or 7, wherein the method comprises:
the audio codec judges whether the current device is in a multi-device output mode, if so, separates the audio synthesis data according to a separation rule corresponding to a preset synthesis rule, and respectively transmits the separated audio mixing data or audio streaming data which is not subjected to audio mixing processing to a plurality of different output devices for output; otherwise, the audio synthetic data is directly transmitted to the corresponding output equipment for output.
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| CN110876098B (en) * | 2018-08-31 | 2022-01-11 | Oppo广东移动通信有限公司 | Audio processing method and electronic equipment |
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| CN112346700B (en) * | 2020-11-04 | 2023-06-13 | 浙江华创视讯科技有限公司 | Audio transmission method, device and computer readable storage medium |
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