CN110269626B - Device and method for objectively simulating and regulating real-ear hearing state - Google Patents
Device and method for objectively simulating and regulating real-ear hearing state Download PDFInfo
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- A61B5/12—Audiometering
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- A61B5/125—Audiometering evaluating hearing capacity objective methods
Abstract
The invention discloses a device for objectively simulating and regulating the real ear hearing state, which comprises a sound playing system, an external auditory canal body support, a DSP (digital signal processor) processing system and a computer, wherein the sound playing system is connected with the DSP processing system, the computer is connected with the DSP processing system, the external auditory canal body support is used for simulating an auditory canal model of a patient, the sound playing system comprises a sound playing device, the sound playing device is arranged on the external auditory canal body support, the DSP processing system comprises a microphone and a DSP chip, the microphone is connected with the DSP chip, and the sound playing device and the computer are connected with the DSP chip. Therefore, the invention establishes a complete simulated ear fitting system, integrates data acquisition, receiving, measurement, feedback regulation and control and code matching, can help hearing loss or tinnitus patients to quickly and safely select a proper sound waveform, obtains more accurate sound stimulation and auditory perception by using a smaller sound pressure level, and realizes better and more obvious rehabilitation effect while protecting the auditory function.
Description
Technical Field
The invention relates to the field of audiological equipment, in particular to a device and a method for objectively simulating and regulating the real-ear hearing state.
Background
For hearing impairment or tinnitus and other hearing impairment, it is usually necessary to select a hearing aid or a tinnitus sound therapy apparatus, and these apparatuses all input sound signals to human ears for rehabilitation and other purposes. In the matching process, the dispenser refers to the audiogram of the patient, introduces audiogram data into the matching system, then adjusts the input sound gain, and the patient informs the dispenser whether the sound is proper or not through subjective reaction.
At present, the measurement is carried out by simulating the output of sound in a standard coupler and ear simulator, but the standard coupler and ear simulator are different from the real ears, because the hearing of each hearing-impaired patient is different (even the hearing of the left ear and the right ear of the same patient is different, namely the sensitivity of the left ear and the right ear of the tinnitus patient to sound with different frequencies and the sound pressure level causing the perception response are different), and the test result is not objective.
Therefore, how to objectively and safely transmit the sound signals into the left ear or the right ear and simultaneously transmit the sound signals into the two ears on the premise of protecting the hearing of the patient to realize the recovery of the hearing or the tinnitus is a technical problem to be solved at present.
Disclosure of Invention
The invention aims to provide a device and a method for objectively simulating and regulating the hearing state of a real ear, which can help a hearing loss or tinnitus patient to quickly and safely select a proper sound waveform by establishing a complete simulated ear fitting system between sound and an individual auditory organ and integrating data acquisition, receiving, measurement, feedback regulation and coding matching, obtain more accurate sound stimulation and auditory perception by using a smaller sound pressure level, realize better and more remarkable rehabilitation effect while protecting the auditory function and at least solve one of the problems.
According to one aspect of the invention, the device for objectively simulating and regulating the real-ear hearing state comprises a sound playing system, an external auditory canal body support, a DSP (digital signal processor) processing system and a computer, wherein the sound playing system is connected with the DSP processing system, the computer is connected with the DSP processing system, the external auditory canal body support is used for simulating an auditory canal model of a patient, the sound playing system comprises a sound playing device, the sound playing device is arranged on the external auditory canal body support, the DSP processing system comprises a microphone and a DSP chip, the microphone is connected with the DSP chip, and the sound playing device and the computer are connected with the DSP chip;
the computer is configured to transmit data such as the hearing state of the patient to the DSP chip and display the processing result of the DSP chip;
the sound playing device is configured to play a sound signal;
the microphone is configured to collect the sound signals played by the sound playing device and feed the sound signals back to the DSP chip;
the DSP chip is configured to measure and process the sound signals fed back by the microphone, so that the sound signals are compared with the hearing state data of the patient stored in the DSP chip, and then the output signals played by the sound playing device are regulated and controlled in real time.
Therefore, the invention establishes a complete simulated ear fitting system, integrates data acquisition, receiving, measurement, feedback regulation and control and code matching, can help hearing loss or tinnitus patients to quickly and safely select a proper sound waveform, obtains more accurate sound stimulation and auditory perception by using a smaller sound pressure level, and realizes better and more obvious rehabilitation effect while protecting the auditory function.
In some embodiments, the external auditory meatus body support is used for embedding an ear mold of the shape of the auditory meatus of a patient, and then is made into a model imitating the shape of the individual auditory meatus, and is made of a material with high plasticity and reusability and close to the characteristics of human skin. Thus, the external auditory meatus body support can be made of a shape memory polymer product or the like. Because of adopting the shape memory polymer, the shape can be recovered, and the external auditory canal models of different human ears can be manufactured repeatedly.
In some embodiments, the sound playing device may be a headphone or a speaker.
In some embodiments, the DSP processing system further includes a data port for enabling a connection to a computer. Thus, the data port may be a USB interface or the like.
In some embodiments, the DSP system further comprises a membrane, the membrane being an elastic membrane, the DSP system being seamlessly elastically connected to the external auditory meatus body support through the membrane. Thus, the film is used for simulating the tympanic membrane of a human ear, and a closed film or a perforated film can be selected according to requirements; the closed film simulates the tympanic membrane of a healthy human ear, and the perforated film simulates the ear mold of a patient with perforated tympanic membrane.
In some embodiments, the DSP processing system further comprises a housing, the housing is adapted to mate with the external auditory meatus body support, the DSP chip and the microphone are disposed in the housing, and the membrane is removably mounted to the housing. Thus, the film can be detached and replaced.
In some embodiments, the sound playing system further comprises an earphone holder, the sound playing device is mounted on the earphone holder, and the earphone holder is matched with the external auditory meatus body holder. Therefore, the earphone bracket is used for fixing various sound playing devices such as earphones, loudspeakers and the like. When the sound playing device such as an earphone or a loudspeaker is arranged on the earphone bracket, and then the earphone bracket, the external auditory canal body bracket and the shell of the DSP processing system are connected into a whole for use, the sound transmission of a non-in-ear earphone is simulated; when directly inserting sound play devices such as earphones or loudspeakers into the external auditory canal body support, the external auditory canal body support and the shell of the DSP processing system are connected into a whole for use, and the sound imitating the in-ear earphone is transmitted into the external auditory canal body support. The earphone bracket can be additionally arranged according to actual needs, different use requirements are met, and the applicability is strong.
According to another aspect of the present invention, there is provided a method for objectively simulating and controlling a real-ear hearing status, comprising the steps of:
s1, acquiring hearing state data of the patient;
s2, manufacturing the ear mold of the patient: injecting the ear-like gel into the ear of a patient to prepare an ear mold for later use;
s3, making a personal auditory canal imitation model of the patient: selecting an external auditory canal support with a proper height according to the sex and age of the patient, processing the ear mold of the patient prepared in the step S2, embedding the ear mold into the external auditory canal support, extruding the shape of the ear mold, and finally taking out the ear mold to obtain the individual 1: 1, an auditory canal imitation model;
s4, connecting the sound playing system, the external auditory canal body bracket, the DSP processing system and all parts of the computer, and assembling into a whole, wherein the whole simulates the characteristics of individual auditory canals of patients;
s5, placing the sound playing device into an earphone bracket or directly inserting the sound playing device into an external auditory canal body bracket, and then playing various sound signals;
and S6, transmitting the earphone signal to a microphone in the DSP processing system through the system, measuring and processing the sound signal fed back by the microphone, comparing the sound signal with the hearing state data of the patient stored in the DSP chip, and then regulating and controlling the output signal played by the sound playing device in real time until matching the sound signal which is consistent with the hearing state data of the patient.
The method for objectively simulating and regulating the real-ear hearing state comprises the manufacturing and using processes of the device for objectively simulating and regulating the real-ear hearing state, is simple to manufacture and simple in process, and can be used for quickly testing and matching the most suitable hearing-aid equipment with the simulated ear according to different patients.
In some embodiments, in step S3, the processing includes grinding, waxing, lengthening, and the like. Because some impurities may adhere to the surface of the ear mold during the ear mold removing process or air bubbles may be generated during the ear-like glue injection process, proper processing is required according to actual conditions to ensure the smoothness and integrity of the ear mold surface.
In some embodiments, the hearing status data includes one or more of a patient' S fine pure tone results, comfort threshold, discomfort threshold, tinnitus test results in step S1.
The invention has the beneficial effects that: the invention establishes a complete simulated ear fitting system, integrates data acquisition, receiving, measurement, feedback regulation and control and code matching, can help hearing loss or tinnitus patients to quickly and safely select proper sound waveforms, obtains more accurate sound stimulation and auditory perception by using smaller sound pressure level, and realizes better and more obvious rehabilitation effect while protecting auditory function. The method for objectively simulating and regulating the real-ear hearing state comprises the manufacturing and using processes of the device for objectively simulating and regulating the real-ear hearing state, is simple to manufacture and simple in process, and can be used for quickly testing and matching the most suitable hearing-aid equipment with the simulated ear according to different patients.
Drawings
FIG. 1 is a schematic view showing the structure of an apparatus for objectively simulating and controlling a real-ear hearing ability according to example 1;
FIG. 2 is a schematic diagram of a control system of the device for objectively simulating and controlling a real-ear hearing status shown in FIG. 1;
fig. 3 is a schematic structural diagram of an apparatus for objectively simulating and controlling a real-ear hearing status according to embodiment 2.
Reference numerals in FIGS. 1 to 3: 1-a computer; 2-a sound playing system; 3-external auditory meatus body support; 4-a DSP processing system; 21-a headset holder; 22-sound playing means; 31-an ear canal replica model; 41-a housing; 42-microphone; 43-DSP chip; 44-a film; 45-an integrated circuit; 411-data port.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
Fig. 1-2 schematically illustrate an apparatus for objectively simulating and controlling a real-ear hearing state according to an embodiment of the present invention.
As shown in fig. 1-2, the device for objectively simulating and controlling a real-ear hearing state includes a sound playing system 2, an external auditory canal body support 3, a DSP processing system 4 and a computer 1. The sound playing system 2 is connected with the DSP processing system 4, and the computer 1 is connected with the DSP processing system 4.
The external auditory meatus body support 3 is used for imitating an auditory meatus model of a patient. The external auditory meatus body holder 3 of the present embodiment is used to fit into an ear mold in the form of the auditory meatus of a patient, and is then made into a model imitating the shape of the individual auditory meatus. The external auditory meatus body support 3 is made of a material which has high plasticity and toughness, can be recycled and has the characteristics close to the skin of a human body. Further, the external auditory meatus body support 3 of the present embodiment may be made of a material such as a shape memory polymer product. Because of adopting the shape memory polymer, the shape can be recovered, and the external auditory canal models of different human ears can be manufactured repeatedly.
The external auditory meatus body support 3 of the present embodiment may have various specifications in length and height, and different specifications are applicable to different people, such as children and adults whose actual external auditory meatus length is different.
As shown in fig. 1, the sound reproducing system 2 of the present embodiment includes an earphone holder 21 and a sound reproducing device 22. The sound player 22 may be an electronic device such as a headphone or a speaker capable of playing sound. The sound reproducing device 22 is attached to the earphone holder 21, and the earphone holder 21 is attached to the external auditory meatus body holder 3. The earphone holder 21 is the same in shape and size as the external auditory meatus body holder 3.
As shown in fig. 1 and 2, the DSP processing system 4 of the present embodiment includes a case 41, a microphone 42, a DSP chip 43, an integrated circuit 45, and a film 44.
The microphone 42, the sound playing device 22 and the computer 1 are all electrically connected with the DSP chip 43.
The integrated circuit 45 is integrally mounted on the DSP chip 43, and the microphone 42, the audio playback device 22, and the computer 1 are all connected to the integrated circuit 45. Therefore, the integrated circuit 45 is the core of the DSP chip 43, and the integrated circuit 45 is configured to facilitate the DSP chip 43 to record the frequency spectrum characteristics of the sound emitted by the earphone after passing through the ear canal body, and to feedback and regulate the sound waveform output by the earphone, and to display and encode the output waveform of the revised sound signal by the computer 1 to match the hearing status of the patient.
The housing 41 is fitted to the external auditory meatus holder 3, and the DSP chip 43 and the microphone 42 are built in the housing 41. The case 41 is used to support and fix the DSP chip 43 and the microphone 42. The housing 41 of the present embodiment has the same shape and size as the earphone holder 21 and the external auditory meatus holder 3. The three can be assembled and disassembled at will. When in use, the earphone bracket 21, the ear canal body bracket and the DSP processing system 4 form a whole, so as to form a device for objectively simulating and regulating the real ear hearing state. By using one set of systems, it is possible to simulate the listening effect of a single ear, and by using two sets of systems, it is possible to simulate the listening effect of two ears.
The housing 41 is provided with a data port 411, and the data port 411 is used for realizing connection with the computer 1. Thus, the data port 411 may be a USB interface or the like.
The membrane 44 of the present embodiment is an elastic membrane 44, the membrane 44 is provided on one end surface of the housing 41, and the housing 41 of the DSP system is seamlessly elastically connected to the external auditory meatus body holder 3 via the membrane 44. When assembled, the upper end surface of the housing 41 is attached to the lower end surface of the external auditory meatus body support 3. Thus, the film 44 is intended to mimic the tympanic membrane of a human ear, with the choice of either a closed film 44 or a perforated film 44 being desirable; the closed film 44 simulates the tympanic membrane of a healthy human ear, and the perforated film 44 simulates the tympanic membrane of a tympanic membrane perforation patient.
The membrane 44 is detachably mounted to the housing 41. Specifically, a mounting groove matched with the film 44 may be formed in the housing 41, and when the housing is used, the edge of the film 44 is mounted in the groove and fixed, and when the housing is not used, the film 44 is directly taken out. Thus, the membrane 44 can be removed and replaced.
The headphone holder 21 of the present embodiment is used to fix the audio playback device 22 such as various headphones and speakers. When the earphone is used, the sound playing device 22 such as an earphone or a loudspeaker is arranged on the earphone support 21, and then the earphone support 21, the external auditory canal body support 3 and the shell 41 of the DSP processing system 4 are connected into a whole for use, so that the sound transmission of a non-in-ear earphone is simulated.
The computer 1 is used for transmitting data such as the hearing ability state of the patient to the DSP chip 43 and displaying the processing result of the DSP chip 43. The sound player 22 is used for playing the sound signal. The microphone 42 is used for collecting the sound signal played by the sound playing device 22 and feeding the sound signal back to the DSP chip 43. The DSP chip 43 is used for measuring and processing the sound signal fed back by the microphone 42, comparing the sound signal with the hearing status data of the patient stored in the DSP chip 43, and then regulating and controlling the output signal played by the sound playing device 22 in real time.
The invention establishes a complete simulated ear fitting system, integrates data acquisition, receiving, measurement, feedback regulation and control and code matching, can help hearing loss or tinnitus patients to quickly and safely select proper sound waveforms, obtains more accurate sound stimulation and auditory perception by using smaller sound pressure level, and realizes better and more obvious rehabilitation effect while protecting auditory function.
As shown in fig. 1 and 2, the present embodiment further provides a method for objectively simulating and controlling a real-ear hearing status, which is a process for forming and operating the above-mentioned device for objectively simulating and controlling a real-ear hearing status, and specifically includes the following steps:
s1, the hearing status data of the patient is obtained by the existing tinnitus matching platform or device, and the data is transmitted to the DSP system by the computer 1 and stored in the DSP chip 43.
The hearing status data of this embodiment includes refined pure tone results, comfort threshold, discomfort threshold, tinnitus examination results, etc. of the patient.
S2, manufacturing the ear mold of the patient: the ear mold is prepared by injecting commercially available ear-like gel into the ear of a patient for later use.
S3, making the individual auditory canal imitation model 31 of the patient: selecting an external auditory meatus body support 3 with a proper height according to the sex and age of the patient, then processing the ear mold of the patient prepared in the step S2 properly through the procedures of grinding, waxing, lengthening and the like, embedding the ear mold into the external auditory meatus body support 3, extruding the shape of the ear mold, and finally taking out the ear mold to obtain the individual 1: 1 an ear canal dummy 31.
In this step, since some impurities may adhere to the surface of the ear mold during the ear mold removing process, or air bubbles may be generated during the ear-like glue injection process, proper processing is required according to actual conditions to ensure the smoothness and integrity of the ear mold surface.
And S4, connecting the sound playing system 2, the external auditory meatus body support 3 and the DSP processing system 4 with each part and device of the computer 1, and assembling the parts and the device into a whole, wherein the whole simulates the characteristics of the auditory meatus of the individual patient.
Therefore, all the parts are combined and connected to form a whole, the characteristics of the individual auditory meatus of the patient are simulated on the whole, the measurement process is closer to the real state, and the error rate is effectively reduced.
S5, placing the sound playing device 22 into the earphone bracket 21, and then playing various sound signals;
s6, the earphone signal is transmitted to the microphone 42 in the DSP processing system 4 through the system, the sound signal fed back by the microphone 42 is measured and processed, so that the sound signal is compared with the hearing state data of the patient stored in the DSP chip 43, and then the output signal played by the audio playing device is regulated and controlled in real time until the sound signal matched with the hearing state data of the patient is matched, so as to meet the real requirement of the patient to the utmost extent.
The method for objectively simulating and regulating the real-ear hearing state comprises the manufacturing and using processes of the device for objectively simulating and regulating the real-ear hearing state, is simple to manufacture and simple in process, and can quickly test and match the most suitable hearing aid equipment for simulating the ears according to different patients.
Example 2
Fig. 3 schematically shows an apparatus for objectively simulating and controlling a real-ear hearing state according to another embodiment of the present invention.
As shown in fig. 3, the device has substantially the same structure as the device for objectively simulating and controlling a real-ear hearing state in example 1, except that: the sound playing system 2 in the present embodiment does not include the headphone jack 21.
The sound reproducing device 22 of the present embodiment is directly mounted in the external auditory meatus body holder 3, and is formed integrally with the external auditory meatus body holder 3. When in use, the sound playing device 22 such as an earphone or a loudspeaker is directly inserted into the external auditory canal body support 3, so that when the external auditory canal body support 3 and the shell 41 of the DSP processing system 4 are connected into a whole for use, the sound of the in-ear earphone can be simulated to be transmitted into the whole.
The forming and working process of the device for objectively simulating and regulating the real-ear hearing state comprises the following steps:
s1, the hearing ability data of the patient is obtained by the existing fitting platform or device such as tinnitus fitting system, and the data is transmitted to the DSP system by the computer 1 and stored in the DSP chip 43.
The hearing status data of the present embodiment includes refined pure tone results, comfort thresholds, discomfort thresholds, tinnitus examination results, etc. of the patient.
S2, manufacturing the ear mold of the patient: the ear mold is prepared by injecting commercially available ear-like gel into the ear of a patient.
S3, making the individual auditory canal imitation model 31 of the patient: selecting an external auditory meatus body support 3 with a proper height according to the sex and age of the patient, then processing the ear mold of the patient prepared in the step S2 properly through the procedures of grinding, waxing, lengthening and the like, embedding the ear mold into the external auditory meatus body support 3, extruding the shape of the ear mold, and finally taking out the ear mold to obtain the individual 1: 1 an ear canal replica model 31.
And S4, connecting the sound playing system 2, the external auditory meatus body support 3 and the DSP processing system 4 with each part and device of the computer 1, and assembling the parts and the device into a whole, wherein the whole simulates the characteristics of the auditory meatus of the individual patient.
Therefore, all the parts are combined and connected to form a whole, the characteristics of the individual auditory meatus of the patient are simulated on the whole, the measurement process is closer to the real state, and the error rate is effectively reduced.
S5, directly placing the sound playing device 22 into the external auditory canal body bracket 3, and then playing various sound signals;
s6, the earphone signal is transmitted to the microphone 42 in the DSP processing system 4 through the system, the sound signal fed back by the microphone 42 is measured and processed, so that the sound signal is compared with the hearing state data of the patient stored in the DSP chip 43, and then the output signal played by the audio playing device is regulated and controlled in real time until the sound signal matched with the hearing state data of the patient is matched, so as to meet the real requirement of the patient to the maximum extent.
The invention can be provided with or without the earphone bracket 21 according to the actual needs: when the sound playing device 22 such as an earphone or a loudspeaker is installed on the earphone support 21, and then the earphone support 21, the external auditory meatus body support 3 and the housing 41 of the DSP processing system 4 are connected into a whole for use, the sound transmission of a non-in-ear earphone can be simulated. When the sound playing device 22 such as an earphone or a speaker is directly inserted into the external auditory meatus body support 3, so that the external auditory meatus body support 3 and the housing 41 of the DSP processing system 4 are connected into a whole for use, the sound transmission of the in-ear earphone can be simulated. The earphone bracket 21 can be additionally arranged according to actual needs, different use requirements are met, and the applicability is strong.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (7)
1. The device for objectively simulating and regulating the real-ear hearing state is characterized by comprising a sound playing system (2), an external auditory canal body support (3), a DSP (digital signal processor) processing system (4) and a computer (1), wherein the sound playing system (2) is connected with the DSP processing system (4), the computer (1) is connected with the DSP processing system (4), the external auditory canal body support (3) is used for simulating an auditory canal model of a patient, the sound playing system (2) comprises a sound playing device (22), the sound playing device (22) is installed at one end of the external auditory canal body support (3), the DSP processing system (4) comprises a microphone (42) and a DSP chip (43), the microphone (42) is connected with the DSP chip (43), and the sound playing device (22) and the computer (1) are connected with the DSP chip (43);
the computer (1) is configured to transmit the hearing state data of the patient to the DSP chip (43) and display the processing result of the DSP chip (43);
the sound playing device (22) is configured to play a sound signal;
the microphone (42) is configured to collect and feed back a sound signal played by the sound playing device (22) to the DSP chip (43);
the DSP chip (43) is configured to measure and process the sound signals fed back by the microphone (42), so that the sound signals are compared with the hearing state data of the patient stored in the DSP chip (43), and then output signals played by the sound playing device (22) are regulated and controlled in real time;
the external auditory canal body support (3) is used for being embedded into an ear mold in the shape of the auditory canal of a patient and then is made into a model imitating the shape of the individual auditory canal, and the external auditory canal body support (3) is made of a material which has high plasticity and toughness, can be recycled and is close to the characteristics of human skin;
the sound playing device (22) can be a headset or a loudspeaker;
the DSP processing system (4) further comprises a film (44), the film (44) is an elastic film (44), and the DSP processing system (4) is in seamless elastic connection with the other end of the external auditory meatus body support (3) through the film (44).
2. The device for objectively simulating and controlling the hearing ability of a real ear according to claim 1, wherein the DSP processing system (4) further includes a data port (411), and the data port (411) is used for realizing the connection with the computer (1).
3. The device for objectively simulating and controlling the hearing status of real ear according to claim 1, wherein the DSP processing system (4) further includes a housing (41), the housing (41) is matched with the external auditory meatus body support (3), the DSP chip (43) and the microphone (42) are embedded in the housing (41), and the membrane (44) is detachably mounted on the housing (41).
4. The device for objectively simulating and controlling the hearing status of real ear according to claim 1, wherein the sound playing system (2) further includes an earphone holder (21), the sound playing device (22) is installed on the earphone holder (21), and the earphone holder (21) is matched with the external auditory canal body holder (3).
5. A method for objectively simulating and regulating the hearing status of real ears is characterized by comprising the following steps:
s1, acquiring hearing state data of the patient;
s2, manufacturing the ear mold of the patient: injecting the ear-like gel into the ear of a patient to prepare an ear mold for later use;
s3, making a personal auditory canal imitation model (31) of the patient: selecting an external auditory canal support with a proper height according to the sex and the age of the patient, processing the ear mold of the patient prepared in the step S2, embedding the ear mold into the external auditory canal body support (3), extruding the shape of the ear mold, and finally taking out the ear mold to obtain an individual 1: 1 an ear canal dummy model (31);
s4, connecting the sound playing system (2), the external auditory canal body support (3), the DSP processing system (4) and each part of the computer (1) to form a whole, wherein the whole simulates the characteristics of the individual auditory canal of the patient;
s5, placing the sound playing device (22) of the sound playing system (2) into one end of the earphone bracket (21) matched with the external auditory meatus body bracket (3) or directly inserting into one end of the external auditory meatus body bracket (3), and then playing various sound signals;
s6, the DSP processing system (4) is connected with the other end of the earphone support (21) or the external auditory canal body support (3), earphone signals are transmitted to a microphone (42) in the DSP processing system (4) through the system, sound signals fed back by the microphone (42) are measured and processed, the sound signals are compared with hearing state data of a patient stored in a DSP chip (43), and then output signals played by the sound playing device (22) are regulated and controlled in real time until sound signals matched with the hearing state data of the patient are obtained.
6. The method according to claim 5, wherein the processing step S3 includes polishing, waxing and lengthening steps.
7. The method of claim 5, wherein in step S1, the hearing status data includes one or more of refined pure tone results, comfort threshold, discomfort threshold, and tinnitus test results of the patient.
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