A method for generating hearing loss treatment sound and a hearing loss treatment system

Abstract

The present invention relates to the technical field of hearing loss analysis, and specifically to a method for generating hearing loss treatment sounds and a hearing loss treatment system, comprising the following steps: obtaining the hearing loss data of a patient, the hearing loss data including pure tone hearing threshold, hearing loss frequency range, and electrophysiological response of the auditory nerve, and generating the patient's hearing loss characteristics based on the hearing loss data; obtaining distributed treatment sound frequency points based on the patient's hearing loss characteristics, and generating treatment sounds after modulation through the distributed treatment sound frequency points; optimizing the treatment sound signal in the time domain according to the generated treatment sound, optimizing the audio signal in the time domain, and optimizing the phase of each frequency component in the treatment sound signal using phase compensation technology, thereby eliminating phase interference or phase distortion caused by frequency compensation. The present invention can dynamically adjust the treatment sound of each frequency point according to the individualized hearing loss characteristics of the patient, thereby maximizing the optimization of the sound treatment effect.

Description

Technical Field

[0001] The present invention relates to the technical field of hearing loss analysis, and in particular to a method for generating hearing loss treatment sounds and a hearing loss treatment system. Background Art

[0002] With the development of modern medical technology, the treatment of hearing loss has gradually become personalized and precise. In the diagnosis of hearing loss, pure tone audiometry is widely used to evaluate the frequency range and degree of hearing loss, while the auditory nerve electrophysiological test (ABR, Auditory Brainstem Response) is used to detect the conduction velocity and nerve response characteristics of the auditory pathway. These tests provide doctors with important reference data, but existing technologies often make it difficult to effectively combine these data to generate personalized therapeutic sounds.

[0003] Some existing treatment methods, such as hearing devices based on frequency compensation (such as hearing aids), can provide a certain degree of sound enhancement based on the patient's hearing loss frequency range, but they only rely on static frequency gain and do not consider the individual's auditory nerve response characteristics or the dynamic changes of hearing loss. In addition, the phase interference and signal distortion caused by frequency compensation often affect the treatment effect, making it difficult for patients to obtain a good hearing experience.

[0004] Therefore, how to optimize the frequency distribution of therapeutic sounds according to the patient's individual hearing loss characteristics and reduce the phase interference or distortion caused by frequency compensation has become an important issue in current technology. Summary of the invention

[0005] Based on the above objectives, the present invention provides a method for generating hearing loss treatment sounds and a hearing loss treatment system.

[0006] A method for generating hearing loss treatment sounds, comprising the following steps:

[0007] S1, obtaining the patient's hearing loss data, which includes pure tone hearing threshold, hearing loss frequency range, and electrophysiological response of the auditory nerve, and generating the patient's hearing loss characteristics based on the hearing loss data;

[0008] S2, based on the patient's hearing loss characteristics, obtain distributed treatment sound frequency points, and generate treatment sounds after modulation through the distributed treatment sound frequency points;

[0009] S3, based on the generated therapeutic sound, optimize the therapeutic sound signal in the time domain, optimize the audio signal in the time domain, and use the phase compensation technology to optimize the phase of each frequency component in the therapeutic sound signal to eliminate the phase interference or phase distortion caused by frequency compensation.

[0010] Furthermore, the S1 specifically includes:

[0011] S11, pure tone audiometry: Through standardized pure tone audiometry, the patient's minimum audible volume at different frequencies is measured to obtain the patient's pure tone hearing threshold data and assess the patient's hearing loss in each frequency range;

[0012] S12, determination of the hearing loss frequency range: based on the results of the pure tone audiometry, analyze the patient's hearing loss range and determine the hearing loss frequency range;

[0013] S13, Collection of auditory nerve electrophysiological response: Through auditory nerve electrophysiological tests (such as ABR, auditory nerve brainstem response test), the patient's auditory nerve response data is obtained to evaluate the function of the auditory nerve and auditory pathway;

[0014] S14, generating patient hearing loss characteristics: generating patient hearing loss characteristics through data analysis methods based on pure tone hearing threshold, hearing loss frequency range and auditory nerve electrophysiological response data;

[0015] Symptoms of hearing loss include:

[0016] Degree of hearing loss: the degree of loss at each frequency and its loss in low, mid and high frequencies;

[0017] Hearing loss frequency range: The frequency range of hearing loss is divided into low frequency band, mid frequency band and high frequency band;

[0018] Auditory nerve response characteristics: waveform delay time and amplitude data.

[0019] Furthermore, the hearing loss degree assessment in S11 includes:

[0020] For each test frequency , by comparing the patient's pure tone hearing threshold NormalThreshold of the test frequency To assess the degree of hearing loss, the normal hearing threshold refers to the average value of a group of healthy hearing people at this frequency, expressed as;

[0021] Hearing Loss Degree Threshold NormalThreshold ;

[0022] If Threshold NormalThreshold , indicating that there is hearing loss at this frequency, and the degree of loss is equal to the difference between the two, in dB. A larger difference indicates a more severe hearing loss.

[0023] If Threshold NormalThreshold , it means that the patient's hearing is normal at this frequency.

[0024] Furthermore, the hearing loss frequency range is determined based on the pure tone audiometry results. The hearing loss frequency range is the frequency range in which the patient has obvious hearing loss, including low frequency, mid-frequency and high frequency regions. According to the hearing threshold data at each frequency point, it is represented by:

[0025] ,in, It is the lowest frequency point at which hearing loss begins to occur, and it is the frequency at which the patient's hearing threshold begins to be significantly higher than the normal threshold. It is the highest frequency point where hearing loss is severe, and the patient's hearing threshold at this frequency is significantly increased, approaching or exceeding a certain critical value.

[0026] Furthermore, the auditory nerve electrophysiological test specifically includes:

[0027] Waveform delay time : Calculate the time difference between the peaks, for example, the delay time from P1 to P5:

[0028] ,in, is the start time of the P1 wave, It is the starting time of the P5 wave, which is compared with the delay time of the standard normal hearing response to determine the degree of delay;

[0029] Amplitude ratio: This is used to assess the strength of the auditory nerve response by analyzing the amplitude of the peaks: ,in, and They represent the amplitudes of the P1 and P5 waves, respectively. Changes in the amplitude ratio help assess the severity of nerve damage.

[0030] Furthermore, the S2 specifically includes:

[0031] S21, based on the patient's hearing loss degree at each frequency , selecting a frequency segment with severe hearing loss within the patient's hearing loss frequency range, and generating multiple treatment sound frequency points;

[0032] S22, combined with the patient's hearing loss frequency range, evenly distributes multiple treatment sound frequency points within the hearing loss frequency range to ensure that all frequency bands with hearing loss are covered, from low frequency to high frequency, to generate a frequency point set ,in, The number of therapeutic sound frequency points;

[0033] S23, by analyzing the patient's auditory nerve response characteristics, the intensity of the therapeutic sound is enhanced in the frequency band with long waveform delay (usually indicating a neural pathway with a slower conduction velocity) to ensure the effectiveness of signal transmission;

[0034] S24, modulate and generate therapeutic sound: according to the obtained distributed therapeutic sound frequency points , frequency domain modulation technology is used to modulate each frequency point, and the sound signal at each frequency point is enhanced or attenuated, so that the therapeutic sound can maximize the compensation of the patient's hearing loss.

[0035] Furthermore, the S24 specifically includes:

[0036] S241, calculation of frequency point gain: according to the degree of hearing loss at each frequency point, the gain or attenuation value of each frequency point is calculated. The gain value is determined by the degree of hearing loss of the patient at that frequency point. The frequency point with large loss is enhanced, and the frequency point with small loss is slightly adjusted or maintains the original strength:

[0037] Calculate the gain expression: ,in, Frequency point Gain value, Threshold For patients at frequency NormalThreshold is the normal hearing threshold of this frequency, MaximumThreshold is the maximum compensable hearing loss, which is the clinically preset upper limit (50dBHL), that is, the benchmark of the maximum gain value. is the gain scaling factor, set to 1, to adjust the strength of the gain;

[0038] S242, based on the calculated gain value , enhance or attenuate each frequency point, the modulation process includes:

[0039] Frequency domain conversion: Perform Fourier transform on the input audio signal to obtain frequency domain representation. Suppose the input signal is , which is expressed in the frequency domain as ,Right now: ,in, represents the Fourier transform, is the complex spectrum in the frequency domain, containing information about each frequency component;

[0040] Gain adjustment for each frequency point: The frequency component of is the frequency point in the frequency domain The amplitude information of the gain adjustment is: ,in is the frequency point after modulation signal, gain The amplitude of the frequency point will be amplified or attenuated according to the patient's hearing loss at that frequency point;

[0041] Inverse Fourier transform: modulated frequency domain signal Perform inverse Fourier transform to obtain the adjusted time domain signal : ,in, represents the inverse Fourier transform, and we get That is the therapeutic sound signal after frequency domain modulation.

[0042] Furthermore, in the time domain optimization in S3, the generated therapeutic sound signal Perform waveform smoothing to reduce mutations or discontinuities caused by frequency compensation, and use finite impulse response filters for smoothing to reduce high-frequency noise or sharp waveforms.

[0043] Furthermore, the phase compensation technology specifically includes:

[0044] Frequency point gain and phase calculation: Based on the acquired therapeutic sound frequency point set In the above example, the signal at each frequency point is expressed as: ,in, For frequency The amplitude under the condition is calculated with the above gain formula: , where Gain Frequency point Amplitude of is the total amplitude of the therapeutic sound signal, Frequency point Phase correction value, phase correction is to compensate for the phase distortion caused by frequency compensation, which is completed by inverse phase adjustment of the response of each frequency point. To optimize the phase of each frequency point, the phase correction value Update via: ,in, is the frequency The phase correction of is the frequency point of the therapeutic sound signal, is the waveform delay time at this frequency point;

[0045] Phase-compensated treatment signal: Apply the phase correction value to the original treatment signal to obtain the optimized treatment sound signal: ,in, is the therapeutic sound signal after phase compensation, is the amplitude after gain adjustment, is the updated phase correction value.

[0046] A hearing loss treatment system, used to implement the above-mentioned method for generating hearing loss treatment sounds, includes the following modules:

[0047] Data acquisition module: collects the patient's pure tone hearing threshold data, hearing loss frequency range, and auditory nerve electrophysiological response data;

[0048] Data analysis and processing module: processes the collected data, analyzes the hearing loss characteristics of the patient, calculates the hearing loss degree, hearing loss frequency range and electrophysiological response of the auditory nerve, and combines the individual differences of the patient to generate personalized hearing loss characteristics. Based on the hearing loss characteristics, it automatically generates distributed treatment sound frequency points P, performs frequency domain modulation according to the frequency points, calculates the gain value or attenuation value of each frequency point, and also includes a time domain optimization algorithm for smoothing the signal waveform and avoiding phase interference;

[0049] Therapeutic sound generation module: generates therapeutic sound signals according to the distributed therapeutic sound frequency points and frequency domain modulation results, and compensates for each frequency point of the therapeutic sound;

[0050] Output module: outputs the processed therapeutic sound signal to the hearing device worn by the patient.

[0051] Beneficial effects of the present invention:

[0052] The present invention, by combining the patient's hearing loss degree, hearing loss frequency range and auditory nerve response characteristics, can accurately select and generate frequency points of therapeutic sounds. Based on pure tone hearing threshold data and auditory nerve electrophysiological response data, a distributed therapeutic sound frequency point design is adopted to ensure that the therapeutic sounds cover all frequency bands with significant hearing loss, and effective compensation is obtained from low frequency to high frequency. Through this method, the therapeutic sounds of each frequency point can be dynamically adjusted according to the patient's individualized hearing loss characteristics, thereby maximizing the optimization of the sound treatment effect and effectively improving the accuracy and adaptability of hearing compensation.

[0053] The present invention, after the therapeutic sound is generated, uses time domain optimization technology to adjust the waveform of the therapeutic sound signal, and uses FIR filter smoothing to eliminate waveform mutations and unnatural signal fluctuations that may be caused in the frequency compensation process. It also introduces phase compensation technology, and through the phase correction of each frequency point, effectively solves the phase interference and distortion that may be caused by frequency compensation. By calculating the waveform delay time of the patient's auditory nerve response data, the phase correction function of each frequency point can be accurately calculated, and the phase consistency between different frequency components is achieved, thereby significantly improving the clarity and naturalness of the therapeutic sound, making the sound therapy more comfortable and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0055] Figure 1 is a schematic diagram of a generating method according to an embodiment of the present invention;

[0056] Figure 2 A schematic diagram of generating therapeutic sounds according to an embodiment of the present invention. DETAILED DESCRIPTION

[0057] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0058] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0059] like Figure 1-Figure 2 As shown, a method for generating hearing loss treatment sound comprises the following steps:

[0060] S1, obtaining the patient's hearing loss data, which includes pure tone hearing threshold, hearing loss frequency range, and electrophysiological response of the auditory nerve, and generating the patient's hearing loss characteristics based on the hearing loss data;

[0061] S2, based on the patient's hearing loss characteristics, obtain distributed treatment sound frequency points, and generate treatment sounds after modulation through the distributed treatment sound frequency points;

[0062] S3, based on the generated therapeutic sound, optimizes the therapeutic sound signal in the time domain, optimizes the audio signal in the time domain, and can better simulate the characteristics of natural sound by precisely controlling the sound wave shape of each audio signal, thereby improving the physiological and psychological comfort of sound therapy. Utilize phase compensation technology to optimize the phase of each frequency component in the therapeutic sound signal to eliminate phase interference or phase distortion caused by frequency compensation.

[0063] S1 specifically includes:

[0064] S11, pure tone audiometry: Through standardized pure tone audiometry, the patient's minimum audible volume at different frequencies (e.g., 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz, 8000 Hz) is measured to obtain the patient's pure tone audiometry threshold data and assess the patient's hearing loss in each frequency range;

[0065] S12, Determination of the frequency range of hearing loss: Based on the results of pure tone audiometry, analyze the patient's hearing loss range, determine the frequency range of hearing loss, and identify the patient's significant hearing loss in a specific frequency band (such as high frequency, mid-frequency or low frequency) as the basis for generating therapeutic sound frequency points;

[0066] S13, Collection of auditory nerve electrophysiological response: Through auditory nerve electrophysiological tests (such as ABR, auditory nerve brainstem response test), the patient's auditory nerve response data is obtained to evaluate the function of the auditory nerve and auditory pathway;

[0067] S14, generate patient hearing loss characteristics: based on pure tone hearing threshold, hearing loss frequency range and auditory nerve electrophysiological response data, generate the patient's hearing loss characteristics through data analysis methods; this characteristic can comprehensively describe the patient's hearing loss pattern and its sensitivity to different frequencies and sound intensities, providing a basis for the generation of personalized treatment sounds;

[0068] Symptoms of hearing loss include:

[0069] Degree of hearing loss: the degree of loss at each frequency and its loss in low, mid and high frequencies;

[0070] Hearing loss frequency range: The frequency range of hearing loss is divided into low frequency band, mid frequency band and high frequency band;

[0071] Auditory nerve response characteristics: waveform delay time and amplitude data.

[0072] The assessment of hearing loss level in S11 includes:

[0073] For each test frequency , by comparing the patient's pure tone hearing threshold NormalThreshold of the test frequency To assess the degree of hearing loss, the normal hearing threshold refers to the average value of a group of healthy hearing people at this frequency, expressed as;

[0074] Hearing Loss Degree Threshold NormalThreshold ;

[0075] If Threshold NormalThreshold , indicating that there is hearing loss at this frequency, and the degree of loss is equal to the difference between the two, in dB. A larger difference indicates a more severe hearing loss.

[0076] If Threshold NormalThreshold , it means that the patient's hearing is normal at this frequency;

[0077] Explanation: If at low frequencies (such as , ) is significantly higher than normal, indicating low-frequency hearing loss; if the patient's hearing threshold is significantly higher than normal at high frequencies (such as , ) The patient's hearing threshold is significantly elevated, indicating high-frequency hearing loss.

[0078] The hearing loss frequency range is determined based on the results of pure tone audiometry. The hearing loss frequency range is the frequency range where the patient's hearing loss is obvious, including low-frequency, mid-frequency and high-frequency areas. According to the hearing threshold data at each frequency point, it is expressed as follows:

[0079] ,in, It is the lowest frequency point at which hearing loss begins to occur, and it is the frequency at which the patient's hearing threshold begins to be significantly higher than the normal threshold. It is the highest frequency point where hearing loss is severe, and the patient's hearing threshold at this frequency is significantly increased, approaching or exceeding a certain critical value;

[0080] Select the frequency range in which the patient's hearing loss is most obvious. The conventional standard is that if the hearing threshold of a certain frequency is 10dB or more higher than the normal value, it is considered that there is hearing loss at that frequency.

[0081] Assume the test data is as follows:

[0082] At 250Hz, Threshold HL;

[0083] At 500Hz, Threshold HL;

[0084] At 1000Hz, Threshold HL;

[0085] At 4000Hz, Threshold HL;

[0086] At 8000Hz, Threshold HL.

[0087] step:

[0088] 1. Select the frequency points where the patient's hearing threshold exceeds the normal value. For example, at 1000 Hz, 4000 Hz, and 8000 Hz, the patient's hearing threshold is significantly higher than the normal threshold.

[0089] 2. Determine the frequency range of hearing loss. For example, if the patient's hearing thresholds between 1000 Hz and 8000 Hz are significantly higher than normal, there may be significant hearing loss in this frequency range.

[0090] 3. Based on the patient's hearing loss pattern, determine the degree of loss in the three frequency bands of low frequency (250 Hz-500 Hz), mid frequency (1000 Hz-2000 Hz) and high frequency (4000 Hz-8000 Hz).

[0091] Through this calculation method, the patient's specific hearing loss frequency range can be obtained. For example, a patient's hearing loss frequency range may be from 1000 Hz to 8000 Hz, indicating that the hearing loss in this frequency band is the most significant.

[0092] Defining the hearing loss frequency range: Based on the above analysis method, define the patient's "hearing loss frequency range" as a continuous frequency band, including the following situations:

[0093] High-frequency hearing loss: Patients show significant hearing loss in the high-frequency area (such as above 4000 Hz). In this case, the treatment method may focus on high-frequency audio compensation.

[0094] Low-frequency hearing loss: The patient has a greater hearing loss in the low-frequency area (such as 250 Hz to 500 Hz). Treatment options may focus on enhancing low-frequency sounds.

[0095] Balanced hearing loss: The patient has varying degrees of hearing loss in multiple frequency bands (such as 1000 Hz to 4000 Hz), and the therapeutic sound may be adapted in multiple frequency bands.

[0096] Auditory nerve electrophysiological testing includes:

[0097] Waveform delay time : Calculate the time difference between the peaks, for example, the delay time from P1 to P5:

[0098] ,in, is the start time of the P1 wave, It is the starting time of the P5 wave, which is compared with the delay time of the standard normal hearing response to determine the degree of delay;

[0099] Amplitude ratio: This is used to assess the strength of the auditory nerve response by analyzing the amplitude of the peaks: ,in, and They represent the amplitudes of the P1 and P5 waves, respectively. Changes in the amplitude ratio help assess the severity of nerve damage.

[0100] S2 specifically includes:

[0101] S21, based on the patient's hearing loss degree at each frequency , select the frequency segment with the most severe hearing loss in the patient's hearing loss frequency range, generate multiple treatment sound frequency points, and Hearing Loss Degree , If it is the preset threshold (20 dB HL), then this frequency is determined to be the distributed therapy sound frequency point that needs to be modulated;

[0102] S22, combined with the patient's hearing loss frequency range, evenly distributes multiple treatment sound frequency points within the hearing loss frequency range to ensure that all frequency bands with hearing loss are covered, from low frequency to high frequency, to generate a frequency point set ,in, The number of therapeutic sound frequency points;

[0103] S23, by analyzing the patient's auditory nerve response characteristics, the intensity of the therapeutic sound is enhanced in the frequency band with long waveform delay (usually indicating a neural pathway with a slower conduction velocity) to ensure the effectiveness of signal transmission;

[0104] S24, modulate and generate therapeutic sound: according to the obtained distributed therapeutic sound frequency points , frequency domain modulation technology is used to modulate each frequency point, and the sound signal at each frequency point is enhanced or attenuated, so that the therapeutic sound can maximize the compensation of the patient's hearing loss. Ultimately, the generated therapeutic sound covers the patient's hearing loss range in frequency. At the same time, modulation is used to ensure that the volume and waveform of each frequency band are suitable for the patient's auditory pathway characteristics, thereby improving the treatment effect.

[0105] The treatment sound frequency point is selected based on the patient's hearing loss level as:

[0106] ;in, Representative frequency point The frequency at It is a set of therapeutic sound frequency points, including all the frequency points that need to be modulated. The patient's frequency The degree of hearing loss at the frequency is expressed as the difference between the patient's hearing threshold at this frequency and the normal hearing threshold, calculated as:

[0107] , where Threshold For patients at frequency NormalThreshold is the normal hearing threshold of this frequency, referring to the hearing threshold of healthy people;

[0108] The treatment sound frequency point is selected based on the patient's hearing loss frequency range, expressed as:

[0109] ;

[0110] in, It is a set of therapeutic sound frequency points, including all the frequency points that need to be modulated;

[0111] It is the frequency range of the patient's hearing loss, defined as the frequency range in which the hearing loss is greater than the preset threshold in a pure tone audiometry test. and The boundaries of low frequency and high frequency are determined respectively, and the frequency band range of the patient's hearing loss is determined. Multiple therapeutic sound frequency points are evenly distributed inside , ensuring that the frequency range of all patients' hearing losses is covered.

[0112] S24 specifically includes:

[0113] S241, calculation of frequency point gain: according to the degree of hearing loss at each frequency point, the gain or attenuation value of each frequency point is calculated. The gain value is determined by the degree of hearing loss of the patient at that frequency point. The frequency point with large loss is enhanced, and the frequency point with small loss is slightly adjusted or maintains the original strength:

[0114] Calculate the gain expression: ,in, Frequency point Gain value, Threshold For patients at frequency NormalThreshold is the normal hearing threshold of this frequency, MaximumThreshold is the maximum compensable hearing loss, which is the clinically preset upper limit (50dBHL), that is, the benchmark of the maximum gain value. is the gain scaling factor, set to 1 to adjust the strength of the gain. The value represents the gain coefficient of the frequency point. A value greater than 1 indicates that the signal at the frequency point is amplified; if the gain coefficient is less than 1, it means that the frequency point needs to be attenuated.

[0115] S242, based on the calculated gain value , enhance or attenuate each frequency point, the modulation process includes:

[0116] Frequency domain conversion: Perform Fourier transform on the input audio signal to obtain frequency domain representation. Suppose the input signal is , which is expressed in the frequency domain as ,Right now: ,in, represents the Fourier transform, It is a complex spectrum in the frequency domain, containing information about each frequency component; the gain is adjusted for each frequency point: The frequency component of is the frequency point in the frequency domain The amplitude information of the gain adjustment is: ,in is the frequency point after modulation signal, gain The amplitude of the frequency point will be amplified or attenuated according to the patient's hearing loss at that frequency point;

[0117] Inverse Fourier transform: modulated frequency domain signal Perform inverse Fourier transform to obtain the adjusted time domain signal : ,in, represents the inverse Fourier transform, and we get That is the therapeutic sound signal after frequency domain modulation.

[0118] In the time domain optimization in S3, the generated therapeutic sound signal Perform waveform smoothing to reduce mutations or discontinuities caused by frequency compensation, use finite impulse response filters for smoothing to reduce high-frequency noise or sharp waveforms, and set an appropriate filter length (101000), and design the filter coefficients according to the characteristics of the treatment sound signal , smooth the signal waveform through convolution operation:

[0119] ,in, is the generated therapeutic sound signal, is the smoothed signal, are the coefficients of the finite impulse response filter, is the length of the filter, It is the time domain sampling point. In this way, the high-frequency noise and mutation part of the signal are reduced, the waveform of the signal becomes smoother and more natural, and the distortion that may occur in the frequency compensation process is reduced.

[0120] Phase compensation technology specifically includes:

[0121] Frequency point gain and phase calculation: Based on the acquired therapeutic sound frequency point set In the above example, the signal at each frequency point is expressed as: ,in, For frequency The amplitude under the condition is calculated with the above gain formula: , where Gain Frequency point Amplitude of is the total amplitude of the therapeutic sound signal, Frequency point Phase correction value, phase correction is to compensate for the phase distortion caused by frequency compensation, which is completed by inverse phase adjustment of the response of each frequency point. To optimize the phase of each frequency point, the phase correction value Update via: ,in, is the frequency The phase correction of is the frequency point of the therapeutic sound signal, is the waveform delay time at this frequency point;

[0122] Phase-compensated treatment signal: Apply the phase correction value to the original treatment signal to obtain the optimized treatment sound signal: ,in, is the therapeutic sound signal after phase compensation, is the amplitude after gain adjustment, The updated phase correction value makes the phases of the various frequency components in the treatment sound signal consistent in the time domain, reducing the interference or distortion caused by frequency compensation.

[0123] A hearing loss treatment system, used to implement the above-mentioned method for generating hearing loss treatment sounds, includes the following modules:

[0124] Data acquisition module: collects the patient's pure tone hearing threshold data, hearing loss frequency range, and auditory nerve electrophysiological response data;

[0125] Data analysis and processing module: processes the collected data, analyzes the hearing loss characteristics of the patient, calculates the hearing loss degree, hearing loss frequency range and electrophysiological response of the auditory nerve, and combines the individual differences of the patient to generate personalized hearing loss characteristics. Based on the hearing loss characteristics, it automatically generates distributed treatment sound frequency points P, performs frequency domain modulation according to the frequency points, calculates the gain value or attenuation value of each frequency point, and also includes a time domain optimization algorithm for smoothing the signal waveform and avoiding phase interference;

[0126] Therapeutic sound generation module: generates therapeutic sound signals according to the distributed therapeutic sound frequency points and frequency domain modulation results, and compensates for each frequency point of the therapeutic sound;

[0127] Output module: The processed therapeutic sound signal is output to the hearing device worn by the patient (such as hearing aids, cochlear implants, etc.). The patient receives the targeted and optimized therapeutic sound, thereby improving the hearing experience.

[0128] Those 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 the present invention is limited to these examples. Under the concept of the present invention, 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 the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0129] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the claims. Therefore, any omissions, 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 method for generating hearing loss treatment sound, characterized in that: The following steps are involved: S1, obtaining the patient's hearing loss data, the hearing loss data including pure tone hearing threshold, hearing loss frequency range and auditory nerve electrophysiological response, and generating the patient's hearing loss characteristics based on the hearing loss data, the hearing loss characteristics including: Degree of hearing loss: the degree of loss at each frequency and its loss in low, mid and high frequencies; Hearing loss frequency range: The frequency range of hearing loss is divided into low frequency band, mid frequency band and high frequency band; Auditory nerve response characteristics: waveform delay time and amplitude data; S2, based on the patient's hearing loss characteristics, obtains distributed treatment sound frequency points, and generates treatment sounds after modulation through the distributed treatment sound frequency points, specifically including: S21, based on the patient's hearing loss degree at each frequency , selecting a frequency segment with severe hearing loss within the patient's hearing loss frequency range, and generating multiple treatment sound frequency points; S22, combined with the patient's hearing loss frequency range, evenly distributes multiple treatment sound frequency points within the hearing loss frequency range to ensure that all frequency bands with hearing loss are covered, from low frequency to high frequency, to generate a frequency point set ,in, The number of therapeutic sound frequency points; S23, by analyzing the patient's auditory nerve response characteristics, enhances the intensity of the therapeutic sound in the frequency band with long waveform delay; S24, modulate and generate therapeutic sound: according to the obtained distributed therapeutic sound frequency points , frequency domain modulation technology is used to modulate each frequency point, and the sound signal of each frequency point is enhanced or attenuated, so that the therapeutic sound can maximize the compensation of the patient's hearing loss; The S24 specifically includes: S241, calculation of frequency point gain: according to the degree of hearing loss at each frequency point, the gain or attenuation value of each frequency point is calculated. The gain value is determined by the degree of hearing loss of the patient at that frequency point. The frequency point with large loss is enhanced, and the frequency point with small loss is slightly adjusted or maintains the original strength: Calculate the gain expression: ,in, Frequency point The gain value, For patients at frequency The hearing threshold is below is the normal hearing threshold of this frequency, is the maximum compensable hearing loss, is the gain scaling factor, set to 1, to adjust the strength of the gain; S242, based on the calculated gain value , enhance or attenuate each frequency point, the modulation process includes: Frequency domain conversion: Perform Fourier transform on the input audio signal to obtain frequency domain representation. Suppose the input signal is , which is expressed in the frequency domain as ,Right now: ,in, represents the Fourier transform, is the complex spectrum in the frequency domain, containing information about each frequency component; Gain adjustment for each frequency point: The frequency component of is the frequency point in the frequency domain The amplitude information of the gain adjustment is: ,in is the frequency point after modulation The signal gain The amplitude of the frequency point will be amplified or attenuated according to the patient's hearing loss at that frequency point; Inverse Fourier transform: modulated frequency domain signal Perform inverse Fourier transform to obtain the adjusted time domain signal : ,in, represents the inverse Fourier transform, and we get That is, the therapeutic sound signal after frequency domain modulation; S3, according to the generated therapeutic sound, optimizing the therapeutic sound signal in the time domain, optimizing the audio signal in the time domain, optimizing the phase of each frequency component in the therapeutic sound signal by using the phase compensation technology, and eliminating the phase interference or phase distortion caused by the frequency compensation, wherein the phase compensation technology specifically includes: Frequency point gain and phase calculation: Based on the acquired therapeutic sound frequency point set In the above example, the signal at each frequency point is expressed as: ,in, For frequency The amplitude of the following Frequency point Phase correction value, use the phase correction value To optimize the phase of each frequency point, the phase correction value Update via: ,in, is the frequency The phase correction of is the frequency point of the therapeutic sound signal, is the waveform delay time at this frequency point; Phase-compensated treatment signal: Apply the phase correction value to the original treatment signal to obtain the optimized treatment sound signal: ,in, is the therapeutic sound signal after phase compensation, is the amplitude after gain adjustment, is the updated phase correction value.

2. The method for generating hearing loss treatment sound according to claim 1, characterized in that: The S1 specifically includes: S11, pure tone audiometry: Through standardized pure tone audiometry, the patient's minimum audible volume at different frequencies is measured to obtain the patient's pure tone hearing threshold data and assess the patient's hearing loss in each frequency range; S12, determination of the hearing loss frequency range: based on the results of the pure tone audiometry test, analyze the patient's hearing loss range and determine the hearing loss frequency range; S13, Collection of auditory nerve electrophysiological response: Through auditory nerve electrophysiological testing, the patient's auditory nerve response data is obtained to evaluate the function of the auditory nerve and auditory pathway; S14, generating patient hearing loss characteristics: generating patient hearing loss characteristics through data analysis methods based on pure tone hearing threshold, hearing loss frequency range and auditory nerve electrophysiological response data.

3. The method for generating hearing loss treatment sound according to claim 2, characterized in that: The hearing loss assessment in S11 includes: For each test frequency , by comparing the pure tone hearing thresholds of patients Normal hearing threshold at the test frequency To assess the degree of hearing loss, expressed as; ； if , indicating that there is hearing loss at this frequency, and the degree of loss is equal to the difference between the two; if , it means that the patient's hearing is normal at this frequency.

4. The method for generating hearing loss treatment sound according to claim 3, characterized in that: The hearing loss frequency range is determined based on the pure tone audiometry results. The hearing loss frequency range is the frequency range where the patient's hearing loss is obvious, including low frequency, mid-frequency and high frequency areas. According to the hearing threshold data at each frequency point, it is represented by the following: ,in, This is the lowest frequency point where hearing loss begins to occur. It is the highest frequency point where hearing loss is severe.

5. The method for generating hearing loss treatment sound according to claim 4, characterized in that: The auditory nerve electrophysiological test specifically includes: Waveform delay time :Calculate the time difference between the peaks: ,in, is the start time of the P1 wave, It is the start time of the P5 wave, which is compared with the delay time of the standard normal hearing response to determine the degree of delay; Amplitude ratio: This is used to assess the strength of the auditory nerve response by analyzing the amplitude of the peaks: ,in, and Represent the amplitudes of P1 and P5 waves respectively.

6. The method for generating hearing loss treatment sound according to claim 1, characterized in that: In the time domain optimization in S3, the generated therapeutic sound signal Perform waveform smoothing and use a finite impulse response filter to smooth out the waveform and reduce high-frequency noise or sharp waveforms.

7. A hearing loss treatment system, used to implement the method for generating hearing loss treatment sound according to any one of claims 1 to 6, characterized in that: Includes the following modules: Data acquisition module: collects the patient's pure tone hearing threshold data, hearing loss frequency range, and auditory nerve electrophysiological response data; Data analysis and processing module: processes the collected data, analyzes the hearing loss characteristics of the patient, calculates the hearing loss degree, hearing loss frequency range and electrophysiological response of the auditory nerve, and combines the individual differences of the patient to generate personalized hearing loss characteristics. Based on the hearing loss characteristics, it automatically generates distributed treatment sound frequency points P, performs frequency domain modulation according to the frequency points, calculates the gain value or attenuation value of each frequency point, and also includes a time domain optimization algorithm for smoothing the signal waveform and avoiding phase interference; Therapeutic sound generation module: generates therapeutic sound signals according to the distributed therapeutic sound frequency points and frequency domain modulation results, and compensates for each frequency point of the therapeutic sound; Output module: outputs the processed therapeutic sound signal to the hearing device worn by the patient.

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