Audio data processing method and system

Abstract

The embodiment of the invention provides an audio data processing method and system, and the method comprises the steps that a data collection end collects audio data, and processes the audio data to form two paths of target data, and the target data is different from the audio data; the data acquisition end encodes the two paths of target data and then sends the two paths of target data to a data receiving end; the data receiving end decodes the received encoded target data to obtain the target data; and the data receiving end performs synthesis processing on the target data to obtain wide dynamic range audio data corresponding to the audio data. According to the audio data processing method provided by the embodiment of the invention, the low-power-consumption equipment can apply wide-dynamic-range audio data and output high-quality audio, and meanwhile, the transmission code rate and storage capacity requirements of the low-power-consumption equipment are effectively reduced.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of computer technology, and in particular to an audio data processing method and system. Background Art

[0002] With the development of technology, audio recording equipment has been widely used. However, when ordinary audio recording technology is used in systems that need to output high-quality audio, there are often problems such as insufficient audio resolution and dynamic range, resulting in small signals not being clear enough and large signals being suppressed.

[0003] In view of the above problems, the industry generally solves them by synthesizing wide dynamic range signals with high / low gain signals. The solution mainly includes the following steps / modules: the original signal passes through the high / low gain channels respectively to generate two high / low gain data, synthesize the wide dynamic range signal, and directly transmit the signal data to the receiving end. However, there are still some problems in synthesizing wide dynamic range signals with high / low gain signals: to represent audio signals with a wide dynamic range, at least 32 bits of bit width or floating point numbers (single / double precision) are required, and the current mainstream frequency domain audio encoders (SBC / AAC / LC3 / OPUS, etc.) cannot support these two audio data formats, and the time domain prediction compression algorithm has the problem of too low compression ratio. Under this solution, the transmission of audio signals with a wide dynamic range between devices has high requirements on the transmission speed and storage capacity of the devices. However, the current low-power devices generally have limited transmission bandwidth and storage space, which restricts the application of wide dynamic range audio signals on low-power devices. Summary of the invention

[0004] The embodiments of the present invention provide an audio data processing method and system that enable a low-power device to apply audio data with a wide dynamic range while effectively reducing the transmission bit rate and storage capacity requirements of the low-power device.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides an audio data processing method, comprising:

[0006] The data collection end collects audio data and processes the audio data to form two channels of target data, where the target data is different from the audio data;

[0007] The data acquisition end encodes the two channels of target data and then sends them to the data receiving end;

[0008] The data receiving end decodes the received encoded target data to obtain the target data;

[0009] The data receiving end performs synthesis processing on the target data to obtain wide dynamic range audio data corresponding to the audio data.

[0010] In some embodiments, the processing of the audio data includes:

[0011] Performing signal conversion on the audio data to obtain analog audio data;

[0012] Performing signal gain processing on the analog audio data;

[0013] The analog audio data after signal gain is quantized into dual-channel data, and the dual-channel data respectively forms two paths of the target data.

[0014] In some embodiments, performing signal gain processing on the analog audio data includes:

[0015] Performing high-gain processing and low-gain processing on the analog audio data respectively;

[0016] The analog audio data after gain is subjected to a first filtering process.

[0017] In some embodiments, performing a first filtering process on the analog audio data after gain includes:

[0018] Performing filtering processing on the analog audio data after high gain based on a first filtering algorithm;

[0019] The analog audio data after low gain is filtered based on a second filtering algorithm, where the second filtering algorithm is different from the first filtering algorithm. The first filtering algorithm is used to improve the signal-to-noise ratio, and the second filtering algorithm is used to improve the waveform smoothness.

[0020] In some embodiments, the data acquisition end encodes the two paths of target data and then sends them to the data receiving end, including:

[0021] The data acquisition end performs dual-channel encoding on the two channels of target data based on a universal audio encoder to obtain high-compression ratio encoded data;

[0022] The encoded data is sent to a data receiving end.

[0023] In some embodiments, the data receiving end decodes the received encoded target data to obtain the target data, including:

[0024] The data receiving end decodes the received encoded target data and splits it into high-gain audio data and low-gain audio data.

[0025] In some embodiments, the method further comprises:

[0026] The data receiving end performs low-pass filtering on the decoded high-gain data and simultaneously performs smoothing filtering on the decoded low-gain data.

[0027] In some embodiments, the data receiving end performs synthesis processing on the target data, including:

[0028] The data receiving end processes the filtered high-gain data and low-gain data separately based on a high dynamic range imaging algorithm to form data with the same gain, and then fuses them to obtain wide dynamic range audio data that retains the details of the high-gain data and expands the amplitude of the low-gain data.

[0029] Another embodiment of the present invention also provides an audio data processing system, including:

[0030] A data acquisition device, used for acquiring audio data, and processing the audio data to form two channels of target data, encoding the two channels of target data and then sending them to a data receiving end, wherein the target data is different from the audio data;

[0031] The data receiving device decodes the received encoded target data to obtain the target data, and performs synthesis processing on the target data to obtain wide dynamic range audio data corresponding to the audio data.

[0032] In some embodiments, the processing of the audio data includes:

[0033] Performing signal conversion on the audio data to obtain analog audio data;

[0034] Performing signal gain processing on the analog audio data;

[0035] The analog audio data after signal gain is quantized into dual-channel data, and the dual-channel data respectively forms two paths of the target data.

[0036] Based on the disclosure of the above embodiments, it can be learned that the beneficial effects of the embodiments of the present invention include enabling low-power devices to be used for high-compression encoding of data to form wide dynamic range audio, and transmitting data based on existing transmission bandwidth and storage capacity, thereby improving the efficiency of wide dynamic range audio data transmission without increasing hardware costs, and at the same time enabling the receiving device to obtain wide dynamic range audio, achieve high-quality audio output, and meet the user's high-quality audio-visual needs.

[0037] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings.

[0038] The technical solution of the present application is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 4 is a flow chart of an audio data processing method in an embodiment of the present invention.

[0041] Figure 2 FIG. 4 is a flow chart of an audio data processing method in another embodiment of the present invention.

[0042] Figure 3 4 is a waveform diagram of audio data in an embodiment of the present invention.

[0043] Figure 4 Schematic diagram of the structure of the audio data processing system in the embodiment of the present invention. DETAILED DESCRIPTION

[0044] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, but are not intended to limit the present invention.

[0045] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the following description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0046] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0047] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the accompanying drawings.

[0048] It should also be understood that, although the invention has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the invention that have the characteristics recited in the claims and are therefore within the scope of protection defined thereby.

[0049] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0050] Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant details. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of ways with substantially any suitable detailed structure.

[0051] This specification may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0052] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0053] like Figure 1 As shown, an embodiment of the present invention provides an audio data processing method, comprising:

[0054] S1: The data acquisition end collects audio data and processes the audio data to form two channels of target data, where the target data is different from the audio data;

[0055] S2: the data acquisition end encodes the two channels of target data and sends them to the data receiving end;

[0056] S3: The data receiving end decodes the received encoded target data to obtain the target data;

[0057] S4: The data receiving end performs synthesis processing on the target data to obtain wide dynamic range audio data corresponding to the audio data.

[0058] The method in this embodiment can be applied to a system formed by two independent devices, and can also be applied to the same device integrated with different devices, such as between two terminals, between a terminal and a server, or between an application and a host and a player, between a sound system and an external player, etc., that is, the method in this embodiment can be applied to any two devices or devices that have audio data processing capabilities and can respectively realize the functions of the above-mentioned data acquisition end and data receiving end, and the specific data is not unique. In this embodiment, the data acquisition end and the data receiving end are respectively illustrated by the first terminal and the second terminal. When the data acquisition end responds to the user's instruction and uses an audio collector, such as a microphone, to collect audio data in the environment, the collected audio data will be processed at multiple levels to form two-way target data, which are dual-channel signal data obtained by splitting the audio data. After the two-way target data is synthesized, the main content of the audio data can be obtained, that is, the main content of the two-way target data is the same as the main content of the original audio data, but the two-way target data and the original audio data are not completely the same in terms of specific data content. The difference can be, but not limited to, reflected in the playback effect of the audio data, data quality, etc. Next, the data acquisition end will encode the two channels of target data based on the existing encoding equipment, and then directly send the encoded audio data to the data receiving end based on the existing network channel. After the data receiving end obtains the encoded audio data, it will decode it to obtain the two channels of target data, and then synthesize the two channels of target data to reconstruct the wide dynamic range audio data corresponding to the audio data.

[0059] Based on the above content, it can be known that the beneficial effect of this embodiment is that by making the data acquisition end responsible for data acquisition, processing data to form the preparation data of wide dynamic range audio, encoding and transmitting the preparation data, and at the same time making the data receiving end responsible for decoding the preparation data, synthesizing and processing the preparation data, and then obtaining the wide dynamic range audio data corresponding to the audio data collected by the data acquisition end, the data receiving end can play the wide dynamic range audio data at this time, and achieve the acquisition and output effect of high-quality audio. The above process does not require the device where the data acquisition end is located and the device where the data output end is located to make hardware changes, and can be implemented based on the original device architecture. Therefore, even if both devices are low-power devices, the application of wide dynamic range audio data can be fully realized. That is, the scheme of this embodiment enables the low-power device to perform high-compression ratio encoding on the data to be used to form the wide dynamic range audio, so that it can transmit data based on the existing transmission bandwidth and storage capacity, thereby improving the efficiency of wide dynamic range audio data transmission, without increasing the hardware cost, and without requiring the low-power device to have a large transmission bandwidth and storage space. At the same time, it can enable the receiving device to obtain wide dynamic range audio, achieve high-quality audio output, and meet the user's high-quality audio-visual needs.

[0060] For example, at the data collection end, such as Figure 2 As shown, the audio data is processed, including:

[0061] S5: performing signal conversion on the audio data to obtain analog audio data;

[0062] S6: performing signal gain processing on the analog audio data;

[0063] S7: quantizing the analog audio data after signal gain into dual-channel data, and the dual-channel data respectively form two channels of target data.

[0064] For example, the data acquisition end performs digital-to-analog conversion on the collected audio signal to obtain an analog signal of the audio data, then performs signal gain on the analog signal, and quantizes it to form two channels of data, that is, dual-channel data. The dual-channel data is preparation data, or preparatory data, for wide dynamic range audio data. The wide dynamic range audio data is obtained based on the dual-channel data processing.

[0065] In this embodiment, the performing signal gain processing on the analog audio data includes:

[0066] S8: performing high gain processing and low gain processing on the analog audio data respectively;

[0067] S9: Filter the analog audio data after gain.

[0068] Specifically, the data acquisition end performs high-gain processing and low-gain processing on the analog signal of the audio data, respectively, and then obtains two channels of data, namely high-gain data and low-gain data. The data acquisition end is configured with a high-gain channel and a low-gain channel, which are used to process the analog signal of the audio data respectively to obtain high-gain data and low-gain data. The two-channel data cooperate to form a dual-channel signal of the audio data. In the signal gain process, different gain processes will cause different fluctuations in the data and generate interference elements. Therefore, in order to ensure data quality, the data acquisition end will use different filtering algorithms for filtering different gain signals to eliminate interference elements left over from the gain process and the data acquisition process.

[0069] In one embodiment, filtering the gained analog audio data includes:

[0070] S10: filtering the analog audio data after high gain based on a first filtering algorithm;

[0071] S11: filtering the analog audio data after low gain based on a second filtering algorithm, where the second filtering algorithm is different from the first filtering algorithm, the first filtering algorithm is used to improve the signal-to-noise ratio, and the second filtering algorithm is used to improve waveform smoothness.

[0072] For example, a first filter is configured in the data acquisition end, which is used to filter the analog audio data after high gain based on the first filtering algorithm. The first filtering algorithm can be, but not limited to, a Gaussian filtering algorithm, a median filtering algorithm, a bilateral filtering algorithm, a guided filtering algorithm, etc. The first filter is used to reduce noise on the signal data after high gain to offset the decrease in signal-to-noise ratio caused by the larger signal gain process. At the same time, a second filter is also configured in the data acquisition end, which is used to filter the analog audio data after low gain based on the second filtering algorithm. The first filtering algorithm can be, but not limited to, a mean filtering algorithm, etc. The second filter is used to smooth the signal data after low gain to eliminate residual small signals, etc. The two filters preferably use different filtering algorithms to filter the signal data, and the high gain data and the low gain data can also be filtered by the two filters in sequence, that is, each data channel is filtered by two filters, or a certain data channel is filtered by two filters in sequence, which depends on the signal gain level.

[0073] Furthermore, the data acquisition end encodes the two paths of target data and then sends them to the data receiving end, including:

[0074] S12: the data acquisition end performs dual-channel encoding on the two channels of target data based on a universal audio encoder to obtain high-compression ratio encoded data;

[0075] S13: Send the encoded data to a data receiving end.

[0076] In this embodiment, the data acquisition end uses an existing general audio encoder, such as a sub-band encoder SBC / advanced audio encoder AAC / low complexity codec LC3 / OPUS encoder, etc., to perform dual-channel encoding on two channels of target data, so as to obtain encoded data with a high compression ratio, and then directly send the encoded data to the data receiving end based on the established transmission channel. Among them, data encoding based on a general encoder can not only obtain a larger compression ratio, but also effectively reduce the transmission bit rate and storage capacity requirements, so that wide dynamic range signals can be stored or transmitted on devices with limited bandwidth and space, and there is no need to modify the hardware equipment of the data acquisition end, and the transmission cost is not increased.

[0077] After the data receiving end receives the encoded target data, since the obtained target data is the preliminary data of the wide dynamic range audio data, it needs to be processed to obtain the desired output wide dynamic range audio data. Specifically, the data receiving end decodes the received encoded target data to obtain the target data, including:

[0078] S14: The data receiving end decodes the received encoded target data and splits it into high-gain audio data and low-gain audio data.

[0079] That is, the data receiving end decodes the encoded target data to restore the two-channel target data. Since the two-channel target data obtained by decoding will have interference signals after compression and encoding and decoding, and the interference signals generated in the gain process may also remain. Therefore, in order to obtain audio data with a wide dynamic range that meets the requirements, the method described in this embodiment also includes:

[0080] S15: The data receiving end performs low-pass filtering on the decoded high-gain data, and performs smoothing filtering on the decoded low-gain data.

[0081] Among them, for high-gain data, it is necessary to use algorithms such as low-pass filtering to perform low-pass filtering, so as to shape the clipped waveform that may be caused by high gain, and offset the high-frequency noise introduced by the clipped waveform at the clipped waveform position due to the encoding and decoding process parameters. And smoothing filtering can further eliminate small signal residues. Of course, both high-gain data and low-gain data can be filtered by the above two methods, or one of the data can be filtered by the above two methods, which can be determined according to the interference state of the actual signal.

[0082] After the filtering process is completed, Figure 3 As shown, the data receiving end can Figure 3 The high gain data shown in the left view is synthesized with the low gain data to obtain Figure 3 Specifically, the data receiving end performs synthesis processing on the target data, including:

[0083] S16: The data receiving end processes the filtered high-gain data and low-gain data separately based on the high dynamic range imaging algorithm to form data with the same gain, and then fuses them to obtain wide dynamic range audio data that retains the details of the high-gain data and expands the amplitude of the low-gain data.

[0084] Alternatively, an HDR algorithm (High Dynamic Range Imaging) may be used to fuse high-gain data and low-gain data to obtain audio data with a wide dynamic range.

[0085] like Figure 4 As shown, another embodiment of the present invention also provides an audio data processing system, including:

[0086] A data acquisition device, used for acquiring audio data, and processing the audio data to form two channels of target data, encoding the two channels of target data and then sending them to a data receiving end, wherein the target data is different from the audio data;

[0087] The data receiving device decodes the received encoded target data to obtain the target data, and performs synthesis processing on the target data to obtain wide dynamic range audio data corresponding to the audio data.

[0088] In some embodiments, the processing of the audio data includes:

[0089] Performing signal conversion on the audio data to obtain analog audio data;

[0090] Performing signal gain processing on the analog audio data;

[0091] The analog audio data after signal gain is quantized into dual-channel data, and the dual-channel data respectively forms two paths of the target data.

[0092] In some embodiments, performing signal gain processing on the analog audio data includes:

[0093] Performing high-gain processing and low-gain processing on the analog audio data respectively;

[0094] The analog audio data after gain is subjected to filtering processing.

[0095] In some embodiments, filtering the analog audio data after gain includes:

[0096] Performing filtering processing on the analog audio data after high gain based on a first filtering algorithm;

[0097] The analog audio data after low gain is filtered based on a second filtering algorithm, where the second filtering algorithm is different from the first filtering algorithm. The first filtering algorithm is used to improve the signal-to-noise ratio, and the second filtering algorithm is used to improve the waveform smoothness.

[0098] In some embodiments, the data acquisition end encodes the two paths of target data and then sends them to the data receiving end, including:

[0099] The data acquisition end performs dual-channel encoding on the two channels of target data based on a universal audio encoder to obtain high-compression ratio encoded data;

[0100] The encoded data is sent to a data receiving end.

[0101] In some embodiments, the data receiving end decodes the received encoded target data to obtain the target data, including:

[0102] The data receiving end decodes the received encoded target data and splits it into high-gain audio data and low-gain audio data.

[0103] In some embodiments, the data receiving end is further used to perform low-pass filtering on the decoded high-gain data and smooth filtering on the decoded low-gain data.

[0104] In some embodiments, the data receiving end performs synthesis processing on the target data, including:

[0105] The data receiving end processes the filtered high-gain data and low-gain data separately based on a high dynamic range imaging algorithm to form data with the same gain, and then fuses them to obtain wide dynamic range audio data that retains the details of the high-gain data and expands the amplitude of the low-gain data.

[0106] The data acquisition end and the data receiving end described in the embodiment of the present invention are both independent electronic devices, and each electronic device includes:

[0107] one or more processors;

[0108] a memory configured to store one or more programs;

[0109] When the one or more programs are executed by the one or more processors, the one or more processors implement the process executed by the corresponding data acquisition end and the process executed by the data receiving end in the audio data processing method as described in any one of the above texts.

[0110] Furthermore, an embodiment of the present invention also provides a storage medium on which a computer program is stored, and when the program is executed by a processor, the data screening method described above is implemented. It should be understood that each solution in this embodiment has the corresponding technical effect in the above method embodiment, which will not be repeated here.

[0111] Furthermore, an embodiment of the present invention also provides a computer program product, which is tangibly stored on a computer-readable medium and includes computer-readable instructions, which, when executed, cause at least one processor to execute a network attack defense method such as that in the embodiment described above.

[0112] It should be noted that the computer storage medium of the present invention may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, system or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access storage medium (RAM), a read-only storage medium (ROM), an erasable programmable read-only storage medium (EPROM or flash memory), an optical fiber, a portable compact disk read-only storage medium (CD-ROM), an optical storage medium, a magnetic storage medium, or any suitable combination of the above. In the present invention, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. In the present invention, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, wherein a computer-readable program code is carried. This propagated data signal may take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can send, propagate or transmit a program configured to be used by or in conjunction with an instruction execution system, system or device. The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, antenna, optical cable, RF, etc., or any suitable combination of the above.

[0113] In addition, it will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program code.

[0114] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A system that specifies the functions of a box or multiple boxes.

[0115] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction system, which is implemented in the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0116] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

Claims

1. An audio data processing method, characterized in that: include: The data collection end collects audio data and processes the audio data to form two channels of target data, where the target data is different from the audio data; The data acquisition end encodes the two channels of target data and then sends them to the data receiving end; The data receiving end decodes the received encoded target data to obtain the target data; The data receiving end performs synthesis processing on the target data to obtain wide dynamic range audio data corresponding to the audio data.

2. The audio data processing method according to claim 1, characterized in that: The processing of the audio data comprises: Performing signal conversion on the audio data to obtain analog audio data; Performing signal gain processing on the analog audio data; The analog audio data after signal gain is quantized into dual-channel data, and the dual-channel data respectively forms two paths of the target data.

3. The audio data processing method according to claim 2, characterized in that: The performing signal gain processing on the analog audio data comprises: Performing high-gain processing and low-gain processing on the analog audio data respectively; The analog audio data after gain is subjected to filtering processing.

4. The audio data processing method according to claim 3, characterized in that: The filtering process of the analog audio data after gain includes: Performing filtering processing on the analog audio data after high gain based on a first filtering algorithm; The analog audio data after low gain is filtered based on a second filtering algorithm, where the second filtering algorithm is different from the first filtering algorithm. The first filtering algorithm is used to improve the signal-to-noise ratio, and the second filtering algorithm is used to improve the waveform smoothness.

5. The audio data processing method according to claim 1, characterized in that: The data acquisition end encodes the two channels of target data and sends them to the data receiving end, including: The data acquisition end performs dual-channel encoding on the two channels of target data based on a universal audio encoder to obtain high-compression ratio encoded data; The encoded data is sent to a data receiving end.

6. The audio data processing method according to claim 5, characterized in that: The data receiving end decodes the received encoded target data to obtain the target data, including: The data receiving end decodes the received encoded target data and splits it into high-gain audio data and low-gain audio data.

7. The audio data processing method according to claim 1, characterized in that: The method further comprises: The data receiving end performs low-pass filtering on the decoded high-gain data and simultaneously performs smoothing filtering on the decoded low-gain data.

8. The audio data processing method according to claim 7, characterized in that: The data receiving end performs synthesis processing on the target data, including: The data receiving end processes the filtered high-gain data and low-gain data separately based on a high dynamic range imaging algorithm to form data with the same gain, and then fuses them to obtain wide dynamic range audio data that retains the details of the high-gain data and expands the amplitude of the low-gain data.

9. An audio data processing system, characterized in that: include: A data acquisition device, used for acquiring audio data, and processing the audio data to form two channels of target data, encoding the two channels of target data and then sending them to a data receiving end, wherein the target data is different from the audio data; The data receiving device decodes the received encoded target data to obtain the target data, and performs synthesis processing on the target data to obtain wide dynamic range audio data corresponding to the audio data.

10. The audio data processing system according to claim 9, characterized in that: The processing of the audio data comprises: Performing signal conversion on the audio data to obtain analog audio data; Performing signal gain processing on the analog audio data; The analog audio data after signal gain is quantized into dual-channel data, and the dual-channel data respectively forms two paths of the target data.

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