Earphone audio signal dynamic adjustment and frequency compensation system

Abstract

The invention discloses an earphone audio signal dynamic adjustment and frequency compensation system, and the system comprises a dynamic low-frequency analysis unit which processes an input audio signal in real time and adjusts a low-frequency gain according to environment noise; the adaptive gain control unit adjusts a gain value according to an analysis result; the intelligent identification and compensation unit intelligently identifies a low-frequency frequency point needing to be compensated based on preference and earphone characteristic data; the frequency response correction unit adjusts low-frequency components in the output audio signal accordingly; the scene mode selection unit allows a user to select low-frequency configuration files suitable for different scenes; the healthy audition protection unit monitors the low-frequency intensity and automatically reduces the gain when the low-frequency intensity exceeds a safety threshold value; and the user feedback receiving unit optimizes the system performance. According to the invention, through dynamic analysis and adaptive control, in combination with user preference intelligent compensation, balanced and comfortable audio experience is provided in various environments, and the problem of a traditional fixed gain method is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of earphones, and in particular relates to an earphone audio signal dynamic adjustment and frequency compensation system. Background Art

[0002] Existing headphone audio processing systems usually only provide fixed or manually adjusted low-frequency gain options, which means that users may not be able to enjoy the best audio experience under different environmental noise conditions. In addition, during long-term use, fixed low-frequency output may cause auditory fatigue or even hearing damage. Although existing technologies can enhance or weaken low-frequency effects through simple gain adjustment, this static method often cannot meet users' needs for balanced sound quality in the face of complex and changing auditory environments.

[0003] In noisy environments, traditional headphone systems have difficulty automatically adjusting low-frequency gain to adapt to changes in ambient noise, resulting in a poor audio experience. In addition, individual differences and users' different preferences for low-frequency intensity are not taken into account, limiting personalized audio enjoyment. Summary of the invention

[0004] The purpose of the present invention is to provide a headphone audio signal dynamic adjustment and frequency compensation system, which can automatically adjust the low-frequency gain according to the ambient noise level through dynamic low-frequency analysis and adaptive gain control, so as to solve the problems in the prior art raised in the above background technology.

[0005] To achieve the above object, the present invention adopts the following technical solution: a headphone audio signal dynamic adjustment and frequency compensation system, comprising: Dynamic low-frequency analysis unit, used to process input audio signals in real time and adjust low-frequency gain according to the ambient noise level; The dynamic low-frequency analysis unit is connected to the adaptive gain control unit, and is used to adjust the low-frequency band gain value according to the analysis result; the adaptive gain control unit communicates with the user preference storage unit, and records and applies the user's personalized preference setting for the low-frequency intensity; The data of the user preference storage unit is transmitted to the intelligent recognition compensation unit for intelligently identifying the low-frequency points that need to be compensated according to the recorded preferences and the headphone characteristic database information; the intelligent recognition compensation unit is connected to the frequency response correction unit, and the frequency response correction unit adjusts the low-frequency components in the output audio signal based on the compensation information; The frequency response correction unit is connected to a scene mode selection unit, which allows the user to select a low frequency profile suitable for music, movies or other scenes; The scene mode selection unit interacts with the healthy hearing protection unit to monitor the low-frequency strength of the output audio signal and automatically reduce the gain when it exceeds a safety threshold; The healthy hearing protection unit is also connected to a user feedback receiving unit for receiving direct feedback from the user on the low-frequency effect to optimize system performance.

[0006] Preferably, the dynamic low-frequency analysis unit comprises: The ambient sound level measurement sub-section is used to obtain the instantaneous ambient sound pressure level S and convert it into a digital signal; The ambient sound level measurement subsection is connected to the spectrum analysis subsection, which analyzes the instantaneous energy distribution of the input audio signal in a preset low-frequency band based on the obtained instantaneous sound pressure level S. , and by the formula Calculate the instantaneous gain adjustment factor ,in is the preset proportional coefficient; The spectrum analysis subsection is connected to the gain application subsection, which adjusts the instantaneous gain factor according to , adjust the gain level of the low-frequency output signal in real time to ensure that the low-frequency part of the output audio is adapted to the ambient noise.

[0007] Preferably, the adaptive gain control unit includes: The gain calculation subcomponent receives the gain adjustment factor from the dynamic low frequency analysis unit and with user preferences Combined to calculate the actual gain application value ; The gain calculation subcomponent outputs to the gain application logic subcomponent to receive the actual gain application value , and implement gain adjustment on the low-frequency part of the audio signal to form an adjusted signal ,in is the original signal; The gain application logic subcomponent interacts with the gain verification subcomponent and is responsible for checking the adjusted signal Whether it exceeds the predetermined safety threshold ,if >T, then automatically reduce , until ≤T.

[0008] Preferably, the user preference storage unit includes: Preference read interface, used to retrieve user personalized preference settings from storage value; the preference reading interface is connected to the preference fusion processing sub-part and is used to set the obtained preferences and the gain adjustment factor from the adaptive gain control unit Combined to generate fusion gain setting ; The preference fusion processing sub-part is output to the preference application interface, which is responsible for setting the fusion gain Applied to the low frequency band of the audio signal to generate a personalized audio signal ; The preference application interface is also connected to the preference update interface. When the user adjusts the preference settings, the preference update interface receives the new preference settings and updates the preference settings in the memory. value to be called next time.

[0009] Preferably, the intelligent recognition compensation unit includes: The preference and feature matching sub-section receives the personalized preference settings in the user preference storage unit and compare it with the headphone low frequency response curve in the headphone characteristic database Comparative analysis; The preference and characteristic matching sub-section outputs to the frequency compensation calculation sub-section, which calculates the set of low-frequency points that need to be compensated based on the comparison results. And its corresponding compensation coefficient , the calculation formula is , where the frequency Belongs to the collection ; The result of the frequency compensation calculation subsection is sent to the compensation application subsection, which calculates the compensation coefficients Applied to the corresponding low-frequency points of the input audio signal to generate a compensated audio signal , so that The mid- and low-frequency parts are more in line with user preferences.

[0010] Preferably, the frequency response correction unit comprises: Compensation information receiving interface, used to receive the compensation coefficient set provided by the intelligent recognition compensation unit ; The compensation information receiving interface is connected to the correction parameter calculation sub-part for calculating the compensation coefficient set according to , calculate the actual correction parameters for each low frequency point that needs to be compensated , where the frequency Belongs to the compensation frequency point set ; The correction parameter calculation sub-section outputs the correction parameter to the correction application sub-section, which uses the calculated actual correction parameter , adjust the gain level of the corresponding low-frequency point in the input audio signal to generate a corrected audio signal ,make sure The low-frequency part is more balanced and in line with user preferences.

[0011] Preferably, the scene mode selection unit includes: The scene profile storage sub-section is used to store a variety of preset low-frequency profiles Fmusic, Fmovie, and Fother, each of which contains a recommended low-frequency adjustment parameter set for a specific scene; The scene profile storage subsection is connected to the user interface interaction subsection, the user interface interaction subsection provides an interface for the user to select a desired scene mode, the selected scene mode determines the low frequency profile used; The user interface interaction subsection transmits the selected low frequency configuration file to the scene application logic subsection, and the scene application logic subsection adjusts the correction parameters of the frequency response correction unit according to the parameter set in the selected configuration file , generate an audio signal suitable for the selected scene ,in The low frequencies of the sound have been optimized for the selected scene.

[0012] Preferably, the healthy hearing protection unit comprises: The signal monitoring sub-section monitors the audio signal optimized by the scene mode in real time Low frequency intensity and compare the monitored intensity with the preset safety threshold Make comparisons; The signal monitoring sub-section is connected to the safety threshold judgment sub-section. If the low frequency intensity detected is Greater than the safety threshold , then the safety threshold judgment sub-part triggers the gain adjustment instruction; The safety threshold judgment sub-section outputs to the gain adjustment execution sub-section, and according to the received instructions, according to the formula Automatically adjust the current gain ,in is a predefined reduction, is the minimum allowable gain value; Gain adjustment performs sub-section adjusted gain Applied to the audio signal to ensure that the low-frequency intensity of the output audio signal does not exceed a safe threshold .

[0013] Preferably, the user feedback receiving unit includes: User input interface sub-section, collects user satisfaction feedback on the current low-frequency effect , ranging from 0 to 1, where 0 means completely dissatisfied and 1 means very satisfied; The user input interface sub-section is connected to the feedback processing sub-section for collecting satisfaction feedback. Adjust the gain adjustment amount , the adjustment formula is , thereby dynamically adjusting the amount of gain reduction.

[0014] Preferably, the user feedback receiving unit further includes: The feedback processing subsection adjusts the gain by the adjusted amount Sent to the gain adjustment execution sub-section, the gain adjustment execution sub-section according to the new adjustment amount Recalculate the adjusted gain and by applying To optimize the system's low-frequency performance, ensure user feedback is reflected and improve the overall listening experience.

[0015] Technical effects and advantages of the present invention: Compared with the prior art, the headphone audio signal dynamic adjustment and frequency compensation system proposed by the present invention has the following advantages: The present invention can automatically adjust the low-frequency gain according to the ambient noise level through dynamic low-frequency analysis and adaptive gain control, and perform intelligent compensation in combination with user preferences to ensure a balanced and comfortable audio experience in any environment, effectively avoiding the problems caused by the traditional fixed gain method. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The block diagram of the headphone audio signal dynamic adjustment and frequency compensation system of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] The present invention provides a headphone audio signal dynamic adjustment and frequency compensation system, such as Figure 1 As shown, it includes: a dynamic low-frequency analysis unit, an adaptive gain control unit, a user preference storage unit, an intelligent recognition compensation unit, a frequency response correction unit, a scene mode selection unit, a healthy hearing protection unit and a user feedback receiving unit.

[0019] In this embodiment, dynamic low-frequency analysis and adaptive gain control can automatically adjust the low-frequency gain according to the ambient noise level, and intelligent compensation can be performed in combination with user preferences to ensure a balanced and comfortable audio experience in any environment, effectively avoiding the problems caused by the traditional fixed gain method. The details are as follows: Exemplarily, the dynamic low-frequency analysis unit is used to process the input audio signal in real time and adjust the low-frequency gain according to the ambient noise level; Furthermore, the dynamic low frequency analysis unit includes: The ambient sound level measurement sub-section is used to obtain the instantaneous ambient sound pressure level S and convert it into a digital signal; The ambient sound level measurement subsection is connected to the spectrum analysis subsection, which analyzes the instantaneous energy distribution of the input audio signal in a preset low-frequency band based on the obtained instantaneous sound pressure level S. , and by the formula Calculate the instantaneous gain adjustment factor ,in is the preset proportional coefficient; The spectrum analysis subsection is connected to the gain application subsection, which adjusts the instantaneous gain factor according to , adjust the gain level of the low-frequency output signal in real time to ensure that the low-frequency part of the output audio is adapted to the ambient noise.

[0020] Through the implementation of the dynamic low-frequency analysis unit, the system can automatically adjust the low-frequency gain of the audio signal under different environmental noise conditions, so that the sound in the low-frequency band is always clear and undistorted. This method not only improves the user's auditory experience in various environments, but also avoids the problem of excessive or insufficient low frequencies that may occur in traditional fixed gain systems due to changes in environmental noise. In addition, through real-time analysis and adjustment, the system can better protect the user's hearing and prevent potential damage to the ears caused by long-term high-gain conditions.

[0021] Exemplarily, the dynamic low-frequency analysis unit is connected to the adaptive gain control unit, and is used to adjust the low-frequency band gain value according to the analysis result; Furthermore, the adaptive gain control unit includes: The gain calculation subcomponent receives the gain adjustment factor from the dynamic low frequency analysis unit and with user preferences Combined to calculate the actual gain application value ; The gain calculation subcomponent outputs to the gain application logic subcomponent to receive the actual gain application value , and implement gain adjustment on the low-frequency part of the audio signal to form an adjusted signal ,in is the original signal; The gain application logic subcomponent interacts with the gain verification subcomponent and is responsible for checking the adjusted signal Whether it exceeds the predetermined safety threshold ,if >T, then automatically reduce , until ≤T.

[0022] Through the design of an adaptive gain control unit, the system implements a dynamic gain adjustment function based on user preferences and environmental changes. This design enables the system to automatically adjust the low-frequency gain value according to the user's personalized needs, thereby providing a more personalized audio experience. At the same time, the gain check subcomponent ensures that even when the user's preference setting is high, the low-frequency intensity of the output audio signal will not exceed the safety threshold, effectively protecting the user's hearing health. Overall, this technical solution significantly improves the intelligence of the audio system and the user experience, while taking into account the needs of user health protection.

[0023] Exemplarily, the adaptive gain control unit communicates with the user preference storage unit to record and apply the user's personalized preference setting for low-frequency intensity; Furthermore, the user preference storage unit includes: Preference read interface, used to retrieve user personalized preference settings from storage value; the preference reading interface is connected to the preference fusion processing sub-part and is used to set the obtained preferences and the gain adjustment factor from the adaptive gain control unit Combined to generate fusion gain setting ; The preference fusion processing sub-part is output to the preference application interface, which is responsible for setting the fusion gain Applied to the low frequency band of the audio signal to generate a personalized audio signal ; The preference application interface is also connected to the preference update interface. When the user adjusts the preference settings, the preference update interface receives the new preference settings and updates the preference settings in the memory. value to be called next time.

[0024] Through the design of the user preference storage unit, the system can dynamically adjust the low-frequency intensity of the audio signal according to the user's personalized preferences. The preference reading interface and the preference fusion processing sub-section ensure that the user's preference settings can be reflected in the audio signal processing process in real time, making the audio output more in line with the user's auditory habits and preferences. The preference update interface allows users to change their preference settings at any time, and these changes will be saved and applied immediately, enhancing the interactivity and user experience of the system. Overall, this technical solution not only improves the flexibility and personalization of the audio system, but also enhances the user's sense of participation and satisfaction.

[0025] Exemplarily, the data of the user preference storage unit is transmitted to the intelligent identification and compensation unit for intelligently identifying the low-frequency points that need to be compensated according to the recorded preferences and the headphone characteristic database information; Furthermore, the intelligent recognition compensation unit includes: The preference and feature matching sub-section receives the personalized preference settings in the user preference storage unit and compare it with the headphone low frequency response curve in the headphone characteristic database Comparative analysis; The preference and characteristic matching sub-section outputs to the frequency compensation calculation sub-section, which calculates the set of low-frequency points that need to be compensated based on the comparison results. And its corresponding compensation coefficient , the calculation formula is , where the frequency Belongs to the collection ; The result of the frequency compensation calculation subsection is sent to the compensation application subsection, which calculates the compensation coefficients Applied to the corresponding low-frequency points of the input audio signal to generate a compensated audio signal , so that The mid- and low-frequency parts are more in line with user preferences.

[0026] Through the design of the intelligent recognition and compensation unit, the system can intelligently identify and compensate for the shortcomings of the headphones in low-frequency response according to the user's personalized preferences and the specific characteristics of the headphones. The preference and characteristic matching subsection ensures the precise match between the user's preference settings and the characteristics of the headphones, while the frequency compensation calculation subsection can accurately calculate the frequency points that need to be compensated and their compensation coefficients. The application of the compensation application subsection enables the final output audio signal to better meet the user's auditory needs in the low-frequency part, thereby providing a more balanced and high-quality audio experience. This technical solution not only improves the intelligence and adaptability of the audio system, but also significantly improves the user's auditory comfort and satisfaction.

[0027] Exemplarily, the intelligent recognition compensation unit is connected to the frequency response correction unit, and the frequency response correction unit adjusts the low-frequency components in the output audio signal based on the compensation information; Further, the frequency response correction unit includes: Compensation information receiving interface, used to receive the compensation coefficient set provided by the intelligent recognition compensation unit ; The compensation information receiving interface is connected to the correction parameter calculation sub-part for calculating the compensation coefficient set according to , calculate the actual correction parameters for each low frequency point that needs to be compensated , where the frequency Belongs to the compensation frequency point set ; The correction parameter calculation sub-section outputs the correction parameter to the correction application sub-section, which uses the calculated actual correction parameter , adjust the gain level of the corresponding low-frequency point in the input audio signal to generate a corrected audio signal ,make sure The low-frequency part is more balanced and in line with user preferences.

[0028] Through the design of the frequency response correction unit, the system can effectively and accurately adjust the low-frequency components in the audio signal according to the compensation coefficient set provided by the intelligent recognition compensation unit. The compensation information receiving interface ensures that the compensation coefficient can be accurately passed to the correction parameter calculation sub-section, which obtains the actual correction parameters through scientific calculation methods, and then applied to the audio signal by the correction application sub-section. This process enables the low-frequency part of the output audio signal to not only compensate for the characteristic defects of the headphones themselves, but also adjust according to the user's personalized preferences to ensure the balance and naturalness of the low-frequency sound, thereby providing a more comfortable and high-quality listening experience.

[0029] In addition, such a design improves the system's automation level, reduces the need for manual adjustments by users, and enhances the system's intelligence and user experience.

[0030] Exemplarily, the frequency response correction unit is connected to a scene mode selection unit, which allows a user to select a low frequency profile suitable for music, movies or other scenes; Further, the scene mode selection unit includes: The scene profile storage sub-section is used to store a variety of preset low-frequency profiles Fmusic, Fmovie, and Fother, each of which contains a recommended low-frequency adjustment parameter set for a specific scene; The scene profile storage subsection is connected to the user interface interaction subsection, the user interface interaction subsection provides an interface for the user to select a desired scene mode, the selected scene mode determines the low frequency profile used; The user interface interaction subsection transmits the selected low frequency configuration file to the scene application logic subsection, and the scene application logic subsection adjusts the correction parameters of the frequency response correction unit according to the parameter set in the selected configuration file , generate an audio signal suitable for the selected scene ,in The low frequencies of the sound have been optimized for the selected scene.

[0031] Through the design of the scene mode selection unit, this system provides a highly flexible and personalized audio experience. The scene profile storage subsection ensures that the system has a variety of preset low-frequency profiles suitable for different scenarios, and users can easily select the most suitable scene mode according to actual needs. The user interface interaction subsection simplifies the user's operation process, making scene selection intuitive and easy. The scene application logic subsection dynamically adjusts the parameters of the frequency response correction unit according to the user's selection to ensure that the low-frequency part of the output audio signal perfectly matches the selected scene. This not only improves the user's auditory experience in different scenarios, but also reduces the trouble of users manually adjusting parameters, making the system more intelligent and easy to use. Overall, this technical solution greatly enhances the adaptability and user experience of the system.

[0032] Exemplarily, the scene mode selection unit interacts with the healthy hearing protection unit to monitor the low-frequency strength of the output audio signal and automatically reduce the gain when it exceeds a safety threshold; Furthermore, the healthy hearing protection unit includes: The signal monitoring sub-section monitors the audio signal optimized by the scene mode in real time Low frequency intensity and compare the monitored intensity with the preset safety threshold Make comparisons; The signal monitoring sub-section is connected to the safety threshold judgment sub-section. If the low frequency intensity detected is Greater than the safety threshold , then the safety threshold judgment sub-part triggers the gain adjustment instruction; The safety threshold judgment sub-section outputs to the gain adjustment execution sub-section, and according to the received instructions, according to the formula Automatically adjust the current gain ,in is a predefined reduction, is the minimum allowable gain value; Gain adjustment performs sub-section adjusted gain Applied to the audio signal to ensure that the low-frequency intensity of the output audio signal does not exceed a safe threshold .

[0033] Through the design of the healthy hearing protection unit, this system can ensure that the low-frequency intensity of the audio signal will not exceed the safety threshold under any circumstances, thereby effectively protecting the user's hearing health. The real-time monitoring function of the signal monitoring sub-section ensures that the system can detect changes in low-frequency intensity in a timely manner and respond quickly. The linkage mechanism between the safety threshold judgment sub-section and the gain adjustment execution sub-section enables the system to take immediate measures when the low-frequency intensity exceeds the safety threshold, automatically reduce the gain, and avoid damage to the user's hearing. This design not only improves the safety of the system, but also enables users to enjoy high-quality audio without worrying about potential health risks, enhancing the reliability of the system and user experience.

[0034] Exemplarily, the healthy hearing protection unit is also connected to a user feedback receiving unit for receiving direct feedback from the user on the low-frequency effect to optimize system performance.

[0035] Furthermore, the user feedback receiving unit includes: User input interface sub-section, collects user satisfaction feedback on the current low-frequency effect , ranging from 0 to 1, where 0 means completely dissatisfied and 1 means very satisfied; The user input interface sub-section is connected to the feedback processing sub-section for collecting satisfaction feedback. Adjust the gain adjustment amount , the adjustment formula is , thereby dynamically adjusting the gain reduction; The feedback processing subsection adjusts the gain by the adjusted amount Sent to the gain adjustment execution sub-section, the gain adjustment execution sub-section according to the new adjustment amount Recalculate the adjusted gain and by applying To optimize the system's low-frequency performance, ensure user feedback is reflected and improve the overall listening experience.

[0036] Through the design of the user feedback receiving unit, the system can collect the user's satisfaction with the low-frequency effect in real time, and dynamically adjust the gain of the audio signal accordingly, thereby optimizing the system's low-frequency performance. The user input interface sub-section ensures that the user's feedback can be received by the system in a timely manner, and the feedback processing sub-section adjusts the gain reduction amount through a scientific calculation method, so that the system adjustment more accurately reflects the user's actual feelings. The application of the gain adjustment execution sub-section enables the adjusted gain to take effect immediately, ensuring that the user's feedback can directly affect the system's performance. This design not only improves the system's adaptability, but also enhances the user experience, allowing users to feel the system's intelligence and personalized services, thereby improving the overall auditory experience and satisfaction.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A headphone audio signal dynamic adjustment and frequency compensation system, characterized in that: include: Dynamic low-frequency analysis unit, used to process input audio signals in real time and adjust low-frequency gain according to the ambient noise level; The dynamic low-frequency analysis unit is connected to the adaptive gain control unit, and is used to adjust the low-frequency band gain value according to the analysis result; the adaptive gain control unit communicates with the user preference storage unit, and records and applies the user's personalized preference setting for the low-frequency intensity; The data of the user preference storage unit is transmitted to the intelligent recognition compensation unit for intelligently identifying the low-frequency points that need to be compensated according to the recorded preferences and the headphone characteristic database information; the intelligent recognition compensation unit is connected to the frequency response correction unit, and the frequency response correction unit adjusts the low-frequency components in the output audio signal based on the compensation information; The frequency response correction unit is connected to a scene mode selection unit, which allows the user to select a low frequency profile suitable for music, movies or other scenes; The scene mode selection unit interacts with the healthy hearing protection unit to monitor the low-frequency strength of the output audio signal and automatically reduce the gain when it exceeds a safety threshold; The healthy hearing protection unit is also connected to a user feedback receiving unit for receiving direct feedback from the user on the low-frequency effect to optimize system performance.

2. The headphone audio signal dynamic adjustment and frequency compensation system according to claim 1, characterized in that: The dynamic low-frequency analysis unit comprises: The ambient sound level measurement sub-section is used to obtain the instantaneous ambient sound pressure level S and convert it into a digital signal; The ambient sound level measurement subsection is connected to the spectrum analysis subsection, which analyzes the instantaneous energy distribution of the input audio signal in a preset low-frequency band based on the obtained instantaneous sound pressure level S. , and by the formula Calculate the instantaneous gain adjustment factor ,in is the preset proportional coefficient; The spectrum analysis subsection is connected to the gain application subsection, which adjusts the instantaneous gain factor according to , adjust the gain level of the low-frequency output signal in real time to ensure that the low-frequency part of the output audio is adapted to the ambient noise.

3. The headphone audio signal dynamic adjustment and frequency compensation system according to claim 2, characterized in that: The adaptive gain control unit comprises: The gain calculation subcomponent receives the gain adjustment factor from the dynamic low frequency analysis unit and with user preferences Combined to calculate the actual gain application value ; The gain calculation subcomponent outputs to the gain application logic subcomponent to receive the actual gain application value , and implement gain adjustment on the low-frequency part of the audio signal to form an adjusted signal ,in is the original signal; The gain application logic subcomponent interacts with the gain verification subcomponent and is responsible for checking the adjusted signal Whether it exceeds the predetermined safety threshold ,if >T, then automatically reduce , until ≤T.

4. The headphone audio signal dynamic adjustment and frequency compensation system according to claim 3, characterized in that: The user preference storage unit comprises: Preference read interface, used to retrieve user personalized preference settings from storage value; the preference reading interface is connected to the preference fusion processing sub-part and is used to set the obtained preferences and the gain adjustment factor from the adaptive gain control unit Combined to generate fusion gain setting ; The preference fusion processing sub-part is output to the preference application interface, which is responsible for setting the fusion gain Applied to the low frequency band of the audio signal to generate a personalized audio signal ; The preference application interface is also connected to the preference update interface. When the user adjusts the preference settings, the preference update interface receives the new preference settings and updates the preference settings in the memory. value to be called next time.

5. The headphone audio signal dynamic adjustment and frequency compensation system according to claim 4, characterized in that: The intelligent recognition compensation unit comprises: The preference and feature matching sub-section receives the personalized preference settings in the user preference storage unit and compare it with the headphone low frequency response curve in the headphone characteristic database Comparative analysis; The preference and characteristic matching sub-section outputs to the frequency compensation calculation sub-section, which calculates the set of low-frequency points that need to be compensated based on the comparison results. And its corresponding compensation coefficient , the calculation formula is , where the frequency Belongs to the collection ; The result of the frequency compensation calculation subsection is sent to the compensation application subsection, which calculates the compensation coefficients Applied to the corresponding low-frequency points of the input audio signal to generate a compensated audio signal , so that The mid- and low-frequency parts are more in line with user preferences.

6. The headphone audio signal dynamic adjustment and frequency compensation system according to claim 5, characterized in that: The frequency response correction unit comprises: Compensation information receiving interface, used to receive the compensation coefficient set provided by the intelligent recognition compensation unit ; The compensation information receiving interface is connected to the correction parameter calculation sub-part for calculating the compensation coefficient set according to , calculate the actual correction parameters for each low frequency point that needs to be compensated , where the frequency Belongs to the compensation frequency point set ; The correction parameter calculation sub-section outputs the correction parameter to the correction application sub-section, which uses the calculated actual correction parameter , adjust the gain level of the corresponding low-frequency point in the input audio signal to generate a corrected audio signal ,make sure The low-frequency part is more balanced and in line with user preferences.

7. The headphone audio signal dynamic adjustment and frequency compensation system according to claim 6, characterized in that: The scene mode selection unit comprises: The scene profile storage sub-section is used to store a variety of preset low-frequency profiles Fmusic, Fmovie, and Fother, each of which contains a recommended low-frequency adjustment parameter set for a specific scene; The scene profile storage subsection is connected to the user interface interaction subsection, the user interface interaction subsection provides an interface for the user to select a desired scene mode, the selected scene mode determines the low frequency profile used; The user interface interaction subsection transmits the selected low frequency configuration file to the scene application logic subsection, and the scene application logic subsection adjusts the correction parameters of the frequency response correction unit according to the parameter set in the selected configuration file , generate an audio signal suitable for the selected scene ,in The low frequencies of the sound have been optimized for the selected scene.

8. The headphone audio signal dynamic adjustment and frequency compensation system according to claim 7, characterized in that: The healthy hearing protection unit comprises: The signal monitoring sub-section monitors the audio signal optimized by the scene mode in real time Low frequency intensity and compare the monitored intensity with the preset safety threshold Make comparisons; The signal monitoring sub-section is connected to the safety threshold judgment sub-section. If the low frequency intensity detected is Greater than the safety threshold , then the safety threshold judgment sub-part triggers the gain adjustment instruction; The safety threshold judgment sub-section outputs to the gain adjustment execution sub-section, and according to the received instructions, according to the formula Automatically adjust the current gain ,in is a predefined reduction, is the minimum allowable gain value; Gain adjustment performs sub-section adjusted gain Applied to the audio signal to ensure that the low-frequency intensity of the output audio signal does not exceed a safe threshold .

9. The headphone audio signal dynamic adjustment and frequency compensation system according to claim 8, characterized in that: The user feedback receiving unit comprises: User input interface sub-section, collects user satisfaction feedback on the current low-frequency effect , ranging from 0 to 1, where 0 means completely dissatisfied and 1 means very satisfied; The user input interface sub-section is connected to the feedback processing sub-section for collecting satisfaction feedback. Adjust the gain adjustment amount , the adjustment formula is , thereby dynamically adjusting the amount of gain reduction.

10. The headphone audio signal dynamic adjustment and frequency compensation system according to claim 9, characterized in that: The user feedback receiving unit also includes: The feedback processing subsection adjusts the gain by the adjusted amount Sent to the gain adjustment execution sub-section, the gain adjustment execution sub-section according to the new adjustment amount Recalculate the adjusted gain and by applying To optimize the system's low-frequency performance, ensure user feedback is reflected and improve the overall listening experience.

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