An audio signal processing method and apparatus

Abstract

The application discloses an audio signal processing method and device, wherein the method comprises the following steps: obtaining an input audio signal, and performing mixed sound processing on the audio signal to obtain a first mixed audio signal; performing equalization processing on the first mixed audio signal to obtain a first equalized audio signal; performing gain adjustment processing on the first equalized audio signal, and performing second equalization processing on the gain-adjusted audio signal to obtain a second equalized audio signal; performing mixed sound processing on the audio signal and the first equalized audio signal to obtain a second mixed audio signal; performing dynamic compression processing on the second mixed audio signal to obtain a dynamic compression audio signal; and performing output mixed sound processing on the second equalized audio signal and the dynamic compression audio signal to obtain an output mixed audio signal. In the embodiment of the application, the effect of avoiding distortion and protecting sound quality of the audio signal during playing is ensured.

Description

Technical Field

[0001] This invention relates to the field of audio processing technology, and in particular to an audio signal processing method and apparatus. Background Technology

[0002] When audio signal data is played directly, if a series of targeted processing measures are not performed on the audio signal data, the sound effect of the audio signal data cannot be guaranteed when it is played on the playback device due to issues such as the amplitude value of the audio signal data, or the sound distortion of the played audio may occur, which will seriously affect the sound effect of the played audio. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides an audio signal processing method and apparatus to ensure that the audio signal is not distorted during playback and to guarantee the sound quality.

[0004] To address the aforementioned technical problems, embodiments of the present invention provide an audio signal processing method, the method comprising:

[0005] The input audio signal is obtained, and the audio signal is mixed to obtain a first mixed audio signal;

[0006] The first mixed audio signal is subjected to equalization processing to obtain a first equalized audio signal;

[0007] The first equalized audio signal undergoes gain adjustment processing, and the gain-adjusted audio signal undergoes a second equalization processing to obtain a second equalized audio signal; simultaneously...

[0008] A second mixed audio signal is obtained by performing mixing processing on the audio signal and the first equalized audio signal.

[0009] The second mixed audio signal is dynamically compressed to obtain a dynamically compressed audio signal.

[0010] The output mixed audio signal is obtained by performing output mixing processing based on the second equalized audio signal and the dynamically compressed audio signal.

[0011] Optionally, obtaining the input audio signal and performing mixing processing on the audio signal to obtain a first mixed audio signal includes:

[0012] The input analog audio signal is received based on the I2S audio interface, and the analog audio signal is processed by analog-to-digital conversion to obtain the input audio signal.

[0013] The audio signal is input to the input mixer at the input end for mixing processing to obtain the first mixed audio signal.

[0014] Optionally, the step of performing equalization processing on the first mixed audio signal to obtain a first equalized audio signal includes:

[0015] The first mixed audio signal is input to an equalizer, and equalization processing is performed in the equalizer according to a preset equalization value to obtain the first equalized audio signal.

[0016] Optionally, the step of performing gain adjustment processing on the first equalized audio signal and performing a second equalization processing on the gain-adjusted audio signal to obtain a second equalized audio signal includes:

[0017] The first equalized audio signal is input into the first volume regulator, and the volume value is adjusted by the first volume regulator according to the preset volume value to obtain the first adjusted audio signal.

[0018] The gain adjustment process is performed on the first adjusted audio signal gain adjustment circuit to obtain the gain-adjusted audio signal.

[0019] The gain-adjusted audio signal is input into a second equalizer for a second equalization process to obtain a second equalized audio signal.

[0020] Optionally, the step of performing gain adjustment processing on the adjusted audio signal gain adjustment circuit to obtain the gain-adjusted audio signal includes:

[0021] The adjusted audio signal is subjected to signal amplitude detection processing in the gain adjustment circuit to obtain the signal detection amplitude value;

[0022] Based on the detected amplitude value of the signal, the gain adjustment circuit performs gain adjustment processing on the adjusted audio signal to obtain the gain-adjusted audio signal.

[0023] Optionally, the step of performing gain adjustment processing on the adjusted audio signal in the gain adjustment circuit based on the detected signal amplitude value to obtain a gain-adjusted audio signal includes:

[0024] Determine whether the detected amplitude value of the signal is greater than or less than a preset amplitude value;

[0025] When the detected amplitude value of the signal is less than the preset amplitude value, the gain adjustment circuit performs gain adjustment processing on the adjusted audio signal corresponding to the preset amplitude value to obtain the gain-adjusted audio signal.

[0026] If the detected amplitude value of the signal is greater than the preset amplitude value, the dynamic range compression algorithm is used in the gain adjustment circuit to perform gain adjustment processing on the adjusted audio signal corresponding to the amplitude value greater than the preset amplitude value, so as to obtain the gain-adjusted audio signal.

[0027] Optionally, the gain adjustment processing of the adjusted audio signal corresponding to a value smaller than the preset amplitude value in the gain adjustment circuit includes:

[0028] Obtain the actual amplitude value of the adjusted audio signal that is less than the preset amplitude value;

[0029] The gain parameter is determined based on the actual amplitude value and the preset amplitude value, and the gain adjustment circuit performs gain adjustment processing on the adjusted audio signal corresponding to the preset amplitude value based on the gain parameter.

[0030] Optionally, the step of performing mixing processing based on the audio signal and the first equalized audio signal to obtain a second mixed audio signal includes:

[0031] The audio signal and the first equalized audio signal are input into the second mixer, and the second mixer is used for mixing to obtain the second mixed audio signal.

[0032] Optionally, the step of dynamically compressing the second mixed audio signal to obtain a dynamically compressed audio signal includes:

[0033] The second mixed audio signal is input into the equalizer for equalization processing to obtain the equalized second mixed audio signal.

[0034] The equalized second mixed audio signal is input into the second volume regulator, and the volume is adjusted according to the preset volume value in the second volume regulator to obtain the second adjusted audio signal.

[0035] The second adjusted audio signal is dynamically compressed to obtain a dynamically compressed audio signal.

[0036] In addition, embodiments of the present invention also provide an audio signal processing apparatus, the apparatus comprising:

[0037] First mixing processing module: used to obtain the input audio signal and perform mixing processing on the audio signal to obtain a first mixed audio signal;

[0038] First equalization processing module: used to perform equalization processing on the first mixed audio signal to obtain a first equalized audio signal;

[0039] The second equalization processing module is used to perform gain adjustment processing on the first equalized audio signal, and then perform a second equalization processing on the gain-adjusted audio signal to obtain a second equalized audio signal; simultaneously...

[0040] Second mixing processing module: used to perform mixing processing based on the audio signal and the first equalized audio signal to obtain a second mixed audio signal;

[0041] Dynamic compression module: used to dynamically compress the second mixed audio signal to obtain a dynamically compressed audio signal;

[0042] The third mixing processing module is used to perform output mixing processing based on the second equalized audio signal and the dynamic compressed audio signal to obtain an output mixed audio signal.

[0043] In this embodiment of the invention, the audio signal is protected from distortion and the sound quality is guaranteed during playback. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a flowchart illustrating the audio signal processing method in an embodiment of the present invention;

[0046] Figure 2 This is a schematic diagram of the structural composition of the audio signal processing device in an embodiment of the present invention. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Example 1

[0049] Please see Figure 1 , Figure 1 This is a flowchart illustrating the audio signal processing method in an embodiment of the present invention.

[0050] like Figure 1As shown, an audio signal processing method includes:

[0051] S11: Obtain the input audio signal and perform mixing processing on the audio signal to obtain a first mixed audio signal;

[0052] In a specific implementation of the present invention, obtaining the input audio signal and performing mixing processing on the audio signal to obtain a first mixed audio signal includes: receiving the input analog audio signal based on the I2S audio interface, performing analog-to-digital conversion processing on the analog audio signal to obtain the input audio signal; and inputting the audio signal to an input mixer at the input end for mixing processing to obtain the first mixed audio signal.

[0053] Specifically, the system receives the analog audio signal input by the user through the I2S audio interface, and then performs analog-to-digital conversion on the analog audio signal through the analog-to-digital converter on the I2S interface to obtain the input audio signal, which is a digital signal. Then, the audio signal is input to the input mixer at the input end for filtering and mixing to obtain the first mixed audio signal.

[0054] S12: Perform equalization processing on the first mixed audio signal to obtain a first equalized audio signal;

[0055] In a specific implementation of the present invention, the step of equalizing the first mixed audio signal to obtain a first equalized audio signal includes: inputting the first mixed audio signal into an equalizer, and performing equalization processing in the equalizer according to a preset equalization value to obtain the first equalized audio signal.

[0056] Specifically, the first mixed audio signal is input into an equalizer, and the equalizer performs equalization processing according to a preset equalization value to obtain the first equalized audio signal.

[0057] S13: Perform gain adjustment processing on the first equalized audio signal, and perform a second equalization processing on the gained-adjusted audio signal to obtain a second equalized audio signal;

[0058] In a specific implementation of this invention, the step of performing gain adjustment processing on the first equalized audio signal and performing a second equalization processing on the gain-adjusted audio signal to obtain a second equalized audio signal includes: inputting the first equalized audio signal into a first volume regulator, adjusting the volume value of the first volume regulator according to a preset volume value to obtain a first adjusted audio signal; performing gain adjustment processing on the gain adjustment circuit of the first adjusted audio signal to obtain a gain-adjusted audio signal; and inputting the gain-adjusted audio signal into a second equalizer for a second equalization processing to obtain a second equalized audio signal.

[0059] Furthermore, the step of performing gain adjustment processing on the adjusted audio signal in the gain adjustment circuit to obtain a gain-adjusted audio signal includes: performing signal amplitude value detection processing on the adjusted audio signal in the gain adjustment circuit to obtain a signal detection amplitude value; and performing gain adjustment processing on the adjusted audio signal in the gain adjustment circuit based on the signal detection amplitude value to obtain a gain-adjusted audio signal.

[0060] Furthermore, the step of performing gain adjustment processing on the adjusted audio signal in the gain adjustment circuit based on the signal detection amplitude value to obtain a gain-adjusted audio signal includes: determining whether the signal detection amplitude value is greater than or less than a preset amplitude value; when the signal detection amplitude value is less than the preset amplitude value, performing gain adjustment processing on the adjusted audio signal corresponding to the amplitude value less than the preset amplitude value in the gain adjustment circuit to obtain a gain-adjusted audio signal; if the signal detection amplitude value is greater than the preset amplitude value, performing gain adjustment processing on the adjusted audio signal corresponding to the amplitude value greater than the preset amplitude value in the gain adjustment circuit using a dynamic range compression algorithm to obtain a gain-adjusted audio signal.

[0061] Furthermore, the step of performing gain adjustment processing on the adjusted audio signal corresponding to a value less than the preset amplitude value in the gain adjustment circuit includes: obtaining the actual amplitude value of the adjusted audio signal corresponding to a value less than the preset amplitude value; determining a gain parameter based on the actual amplitude value and the preset amplitude value; and performing gain adjustment processing on the adjusted audio signal corresponding to a value less than the preset amplitude value in the gain adjustment circuit based on the gain parameter.

[0062] Specifically, the first equalized audio signal is first input into the first volume regulator, where the volume is adjusted according to a preset volume value to obtain the first adjusted audio signal. Then, the gain of the first adjusted audio signal is adjusted in the gain adjustment circuit to obtain the gain-adjusted audio signal. Finally, the gain-adjusted audio signal is input into the second equalizer for a second equalization process to obtain the second equalized audio signal.

[0063] When performing gain adjustment, the audio signal after adjustment first needs to undergo signal amplitude detection processing in the gain adjustment circuit to obtain the signal detection amplitude value; then, based on the signal detection amplitude value, the gain adjustment circuit performs gain adjustment processing on the audio signal after adjustment to obtain the audio signal with adjusted gain.

[0064] When the gain adjustment circuit performs gain adjustment processing on the regulated audio signal based on the detected amplitude value, it first needs to determine whether the detected amplitude value is greater than or less than a preset amplitude value. When the detected amplitude value is less than the preset amplitude value, the gain adjustment circuit performs gain adjustment processing on the regulated audio signal corresponding to the amplitude value less than the preset amplitude value to obtain the gain-adjusted audio signal. When the detected amplitude value is greater than the preset amplitude value, the gain adjustment circuit uses a dynamic range compression algorithm to perform gain adjustment processing on the regulated audio signal corresponding to the amplitude value greater than the preset amplitude value to obtain the gain-adjusted audio signal.

[0065] Specifically, when adjusting the gain of an audio signal that is less than the preset amplitude value in the gain adjustment circuit, it is first necessary to obtain the actual amplitude value of the audio signal that is less than the preset amplitude value; then, the gain parameter is calculated and determined by the relationship between the actual amplitude value and the preset amplitude value; and the gain adjustment is performed on the audio signal that is less than the preset amplitude value in the gain adjustment circuit according to the gain parameter.

[0066] S14: Perform mixing processing on the audio signal and the first equalized audio signal to obtain a second mixed audio signal;

[0067] In a specific implementation of the present invention, the step of performing mixing processing based on the audio signal and the first equalized audio signal to obtain a second mixed audio signal includes: inputting the audio signal and the first equalized audio signal into a second mixer, performing mixing processing in the second mixer, and obtaining a second mixed audio signal.

[0068] Specifically, the second mixed audio signal can be obtained by inputting the audio signal and the first equalized audio signal into the second mixer and performing mixing processing within the second mixer.

[0069] S15: Perform dynamic compression processing on the second mixed audio signal to obtain a dynamically compressed audio signal;

[0070] In a specific implementation of this invention, the step of dynamically compressing the second mixed audio signal to obtain a dynamically compressed audio signal includes: inputting the second mixed audio signal into an equalizer for equalization processing to obtain an equalized second mixed audio signal; inputting the equalized second mixed audio signal into a second volume regulator, adjusting the volume of the second volume regulator according to a preset volume value to obtain a second adjusted audio signal; and performing dynamic compression processing on the second adjusted audio signal to obtain a dynamically compressed audio signal.

[0071] Specifically, by inputting the second mixed audio signal into an equalizer for equalization processing, an equalized second mixed audio signal can be obtained; then, the equalized second mixed audio signal is input into a second volume controller, and the volume is adjusted according to a preset volume value to obtain a second adjusted audio signal; finally, the second adjusted audio signal is dynamically compressed to obtain a dynamically compressed audio signal.

[0072] S16: Perform output mixing processing based on the second equalized audio signal and the dynamic compressed audio signal to obtain an output mixed audio signal.

[0073] In the specific implementation of this invention, the output mixed audio signal is obtained by inputting the second equalized audio signal and the dynamically compressed audio signal into the output mixer and performing output mixing processing in the output mixer.

[0074] In this embodiment of the invention, the audio signal is protected from distortion and the sound quality is guaranteed during playback.

[0075] Example 2

[0076] Please see Figure 2 , Figure 2 This is a schematic diagram of the structural composition of the audio signal processing device in an embodiment of the present invention.

[0077] like Figure 2 As shown, an audio signal processing apparatus includes:

[0078] First mixing processing module 21: used to obtain the input audio signal and perform mixing processing on the audio signal to obtain a first mixed audio signal;

[0079] In a specific implementation of the present invention, obtaining the input audio signal and performing mixing processing on the audio signal to obtain a first mixed audio signal includes: receiving the input analog audio signal based on the I2S audio interface, performing analog-to-digital conversion processing on the analog audio signal to obtain the input audio signal; and inputting the audio signal to an input mixer at the input end for mixing processing to obtain the first mixed audio signal.

[0080] Specifically, the system receives the analog audio signal input by the user through the I2S audio interface, and then performs analog-to-digital conversion on the analog audio signal through the analog-to-digital converter on the I2S interface to obtain the input audio signal, which is a digital signal. Then, the audio signal is input to the input mixer at the input end for filtering and mixing to obtain the first mixed audio signal.

[0081] First equalization processing module 22: used to perform equalization processing on the first mixed audio signal to obtain a first equalized audio signal;

[0082] In a specific implementation of the present invention, the step of equalizing the first mixed audio signal to obtain a first equalized audio signal includes: inputting the first mixed audio signal into an equalizer, and performing equalization processing in the equalizer according to a preset equalization value to obtain the first equalized audio signal.

[0083] Specifically, the first mixed audio signal is input into an equalizer, and the equalizer performs equalization processing according to a preset equalization value to obtain the first equalized audio signal.

[0084] The second equalization processing module 23 is used to perform gain adjustment processing on the first equalized audio signal and to perform a second equalization processing on the audio signal after gain adjustment to obtain a second equalized audio signal.

[0085] In a specific implementation of this invention, the step of performing gain adjustment processing on the first equalized audio signal and performing a second equalization processing on the gain-adjusted audio signal to obtain a second equalized audio signal includes: inputting the first equalized audio signal into a first volume regulator, adjusting the volume value of the first volume regulator according to a preset volume value to obtain a first adjusted audio signal; performing gain adjustment processing on the gain adjustment circuit of the first adjusted audio signal to obtain a gain-adjusted audio signal; and inputting the gain-adjusted audio signal into a second equalizer for a second equalization processing to obtain a second equalized audio signal.

[0086] Furthermore, the step of performing gain adjustment processing on the adjusted audio signal in the gain adjustment circuit to obtain a gain-adjusted audio signal includes: performing signal amplitude value detection processing on the adjusted audio signal in the gain adjustment circuit to obtain a signal detection amplitude value; and performing gain adjustment processing on the adjusted audio signal in the gain adjustment circuit based on the signal detection amplitude value to obtain a gain-adjusted audio signal.

[0087] Furthermore, the step of performing gain adjustment processing on the adjusted audio signal in the gain adjustment circuit based on the signal detection amplitude value to obtain a gain-adjusted audio signal includes: determining whether the signal detection amplitude value is greater than or less than a preset amplitude value; when the signal detection amplitude value is less than the preset amplitude value, performing gain adjustment processing on the adjusted audio signal corresponding to the amplitude value less than the preset amplitude value in the gain adjustment circuit to obtain a gain-adjusted audio signal; if the signal detection amplitude value is greater than the preset amplitude value, performing gain adjustment processing on the adjusted audio signal corresponding to the amplitude value greater than the preset amplitude value in the gain adjustment circuit using a dynamic range compression algorithm to obtain a gain-adjusted audio signal.

[0088] Furthermore, the step of performing gain adjustment processing on the adjusted audio signal corresponding to a value less than the preset amplitude value in the gain adjustment circuit includes: obtaining the actual amplitude value of the adjusted audio signal corresponding to a value less than the preset amplitude value; determining a gain parameter based on the actual amplitude value and the preset amplitude value; and performing gain adjustment processing on the adjusted audio signal corresponding to a value less than the preset amplitude value in the gain adjustment circuit based on the gain parameter.

[0089] Specifically, the first equalized audio signal is first input into the first volume regulator, where the volume is adjusted according to a preset volume value to obtain the first adjusted audio signal. Then, the gain of the first adjusted audio signal is adjusted in the gain adjustment circuit to obtain the gain-adjusted audio signal. Finally, the gain-adjusted audio signal is input into the second equalizer for a second equalization process to obtain the second equalized audio signal.

[0090] When performing gain adjustment, the audio signal after adjustment first needs to undergo signal amplitude detection processing in the gain adjustment circuit to obtain the signal detection amplitude value; then, based on the signal detection amplitude value, the gain adjustment circuit performs gain adjustment processing on the audio signal after adjustment to obtain the audio signal with adjusted gain.

[0091] When the gain adjustment circuit performs gain adjustment processing on the regulated audio signal based on the detected amplitude value, it first needs to determine whether the detected amplitude value is greater than or less than a preset amplitude value. When the detected amplitude value is less than the preset amplitude value, the gain adjustment circuit performs gain adjustment processing on the regulated audio signal corresponding to the amplitude value less than the preset amplitude value to obtain the gain-adjusted audio signal. When the detected amplitude value is greater than the preset amplitude value, the gain adjustment circuit uses a dynamic range compression algorithm to perform gain adjustment processing on the regulated audio signal corresponding to the amplitude value greater than the preset amplitude value to obtain the gain-adjusted audio signal.

[0092] Specifically, when adjusting the gain of an audio signal that is less than the preset amplitude value in the gain adjustment circuit, it is first necessary to obtain the actual amplitude value of the audio signal that is less than the preset amplitude value; then, the gain parameter is calculated and determined by the relationship between the actual amplitude value and the preset amplitude value; and the gain adjustment is performed on the audio signal that is less than the preset amplitude value in the gain adjustment circuit according to the gain parameter.

[0093] Second mixing processing module 24: used to perform mixing processing based on the audio signal and the first equalized audio signal to obtain a second mixed audio signal;

[0094] In a specific implementation of the present invention, the step of performing mixing processing based on the audio signal and the first equalized audio signal to obtain a second mixed audio signal includes: inputting the audio signal and the first equalized audio signal into a second mixer, performing mixing processing in the second mixer, and obtaining a second mixed audio signal.

[0095] Specifically, the second mixed audio signal can be obtained by inputting the audio signal and the first equalized audio signal into the second mixer and performing mixing processing within the second mixer.

[0096] Dynamic compression module 25: used to perform dynamic compression processing on the second mixed audio signal to obtain a dynamically compressed audio signal;

[0097] In a specific implementation of this invention, the step of dynamically compressing the second mixed audio signal to obtain a dynamically compressed audio signal includes: inputting the second mixed audio signal into an equalizer for equalization processing to obtain an equalized second mixed audio signal; inputting the equalized second mixed audio signal into a second volume regulator, adjusting the volume of the second volume regulator according to a preset volume value to obtain a second adjusted audio signal; and performing dynamic compression processing on the second adjusted audio signal to obtain a dynamically compressed audio signal.

[0098] Specifically, by inputting the second mixed audio signal into an equalizer for equalization processing, an equalized second mixed audio signal can be obtained; then, the equalized second mixed audio signal is input into a second volume controller, and the volume is adjusted according to a preset volume value to obtain a second adjusted audio signal; finally, the second adjusted audio signal is dynamically compressed to obtain a dynamically compressed audio signal.

[0099] The third mixing processing module 26 is used to perform output mixing processing based on the second equalized audio signal and the dynamic compressed audio signal to obtain an output mixed audio signal.

[0100] In the specific implementation of this invention, the output mixed audio signal is obtained by inputting the second equalized audio signal and the dynamically compressed audio signal into the output mixer and performing output mixing processing in the output mixer.

[0101] In this embodiment of the invention, the audio signal is protected from distortion and the sound quality is guaranteed during playback.

[0102] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, which may include: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0103] Furthermore, the above provides a detailed description of an audio signal processing method and apparatus provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An audio signal processing method, characterized in that, The method includes: The input audio signal is obtained, and the audio signal is mixed to obtain a first mixed audio signal; The first mixed audio signal is subjected to equalization processing to obtain a first equalized audio signal; The first equalized audio signal undergoes gain adjustment processing, and the gain-adjusted audio signal undergoes a second equalization processing to obtain a second equalized audio signal; simultaneously... A second mixed audio signal is obtained by performing mixing processing on the audio signal and the first equalized audio signal. The second mixed audio signal is dynamically compressed to obtain a dynamically compressed audio signal. Based on the second equalized audio signal and the dynamic compressed audio signal, output mixing processing is performed to obtain an output mixed audio signal; The step of performing mixing processing based on the audio signal and the first equalized audio signal to obtain a second mixed audio signal includes: The audio signal and the first equalized audio signal are input into the second mixer, and the mixing process is performed in the second mixer to obtain the second mixed audio signal; The step of dynamically compressing the second mixed audio signal to obtain a dynamically compressed audio signal includes: The second mixed audio signal is input into the equalizer for equalization processing to obtain the equalized second mixed audio signal. The equalized second mixed audio signal is input into the second volume regulator, and the volume is adjusted according to the preset volume value in the second volume regulator to obtain the second adjusted audio signal. The second adjusted audio signal is dynamically compressed to obtain a dynamically compressed audio signal.

2. The audio signal processing method according to claim 1, characterized in that, The process of obtaining the input audio signal and performing mixing processing on the audio signal to obtain a first mixed audio signal includes: The input analog audio signal is received based on the I2S audio interface, and the analog audio signal is processed by analog-to-digital conversion to obtain the input audio signal. The audio signal is input to the input mixer at the input end for mixing processing to obtain the first mixed audio signal.

3. The audio signal processing method according to claim 1, characterized in that, The step of performing equalization processing on the first mixed audio signal to obtain a first equalized audio signal includes: The first mixed audio signal is input to an equalizer, and equalization processing is performed in the equalizer according to a preset equalization value to obtain the first equalized audio signal.

4. The audio signal processing method according to claim 1, characterized in that, The step of performing gain adjustment processing on the first equalized audio signal and then performing a second equalization processing on the gain-adjusted audio signal to obtain a second equalized audio signal includes: The first equalized audio signal is input into the first volume regulator, and the volume value is adjusted by the first volume regulator according to the preset volume value to obtain the first adjusted audio signal. The gain adjustment process is performed on the first adjusted audio signal gain adjustment circuit to obtain the gain-adjusted audio signal. The gain-adjusted audio signal is input into a second equalizer for a second equalization process to obtain a second equalized audio signal.

5. The audio signal processing method according to claim 4, characterized in that, The gain adjustment process performed on the gain adjustment circuit of the adjusted audio signal to obtain the gain-adjusted audio signal includes: The adjusted audio signal is subjected to signal amplitude detection processing in the gain adjustment circuit to obtain the signal detection amplitude value; Based on the detected amplitude value of the signal, the gain adjustment circuit performs gain adjustment processing on the adjusted audio signal to obtain the gain-adjusted audio signal.

6. The audio signal processing method according to claim 5, characterized in that, The step of performing gain adjustment processing on the adjusted audio signal in the gain adjustment circuit based on the detected signal amplitude value to obtain a gain-adjusted audio signal includes: Determine whether the detected amplitude value of the signal is greater than or less than a preset amplitude value; If the detected amplitude value of the signal is less than the preset amplitude value, the gain adjustment circuit performs gain adjustment processing on the adjusted audio signal corresponding to the preset amplitude value to obtain the gain-adjusted audio signal. If the detected amplitude value of the signal is greater than the preset amplitude value, the dynamic range compression algorithm is used in the gain adjustment circuit to perform gain adjustment processing on the adjusted audio signal corresponding to the amplitude value greater than the preset amplitude value, so as to obtain the gain-adjusted audio signal.

7. The audio signal processing method according to claim 6, characterized in that, The gain adjustment process for the adjusted audio signal that is less than the preset amplitude value in the gain adjustment circuit includes: Obtain the actual amplitude value of the adjusted audio signal that is less than the preset amplitude value; The gain parameter is determined based on the actual amplitude value and the preset amplitude value, and the gain is adjusted in the gain adjustment circuit based on the gain parameter for the adjusted audio signal that is less than the preset amplitude value.

8. An audio signal processing device, characterized in that, The device includes: First mixing processing module: used to obtain the input audio signal and perform mixing processing on the audio signal to obtain a first mixed audio signal; First equalization processing module: used to perform equalization processing on the first mixed audio signal to obtain a first equalized audio signal; The second equalization processing module is used to perform gain adjustment processing on the first equalized audio signal, and then perform a second equalization processing on the gain-adjusted audio signal to obtain a second equalized audio signal; simultaneously... Second mixing processing module: used to perform mixing processing based on the audio signal and the first equalized audio signal to obtain a second mixed audio signal; Dynamic compression module: used to dynamically compress the second mixed audio signal to obtain a dynamically compressed audio signal; The third mixing processing module is used to perform output mixing processing based on the second equalization audio signal and the dynamic compression audio signal to obtain an output mixed audio signal. The step of performing mixing processing based on the audio signal and the first equalized audio signal to obtain a second mixed audio signal includes: The audio signal and the first equalized audio signal are input into the second mixer, and the mixing process is performed in the second mixer to obtain the second mixed audio signal; The step of dynamically compressing the second mixed audio signal to obtain a dynamically compressed audio signal includes: The second mixed audio signal is input into the equalizer for equalization processing to obtain the equalized second mixed audio signal. The equalized second mixed audio signal is input into the second volume regulator, and the volume is adjusted according to the preset volume value in the second volume regulator to obtain the second adjusted audio signal. The second adjusted audio signal is dynamically compressed to obtain a dynamically compressed audio signal.

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