CN102813520A - Pure tone audiometric and psychophysical tuning curve detecting system - Google Patents

Abstract

The invention relates to a pure tone audiometry and psychophysical tuning curve detection system, which includes a computer, a multimedia sound card, a hand-held USB handle, a micro-speaker and earplugs; the handle is provided with at least two buttons, the The micro-speaker includes at least two electro-acoustic transducers, the input end of the micro-speaker is connected to the sound card, and the output end is connected to the earplug; an auditory test platform is arranged in the computer, and the auditory test platform includes a hardware drive System and test execution system; the hardware drive system includes a sound card driver connected to the sound card and a multimedia programming interface connected to the handle, and the test execution system includes a pure tone audiometry detection module and a psychophysical tuning curve detection module. The invention realizes both complete pure tone audiometry and psychophysical tuning curve detection in a set of detection system, and the invention can be widely used in the comprehensive comprehensive detection of auditory system.

Description

A pure tone audiometry and psychophysical tuning curve detection system

technical field

The invention relates to a hearing detection system, in particular to a pure tone audiometry and psychophysical tuning curve detection system based on a sound card.

Background technique

There are many methods for hearing detection in the prior art, and pure tone audiometry using a standard audiometer is a widely used and recognized detection method that can accurately reflect hearing acuity. Pure tone audiometry Hearing test is a process in which subjects are given sine wave pure tones of different intensities, and subjects respond subjectively according to their own feelings, which is the basis for evaluating auditory function. The pure tone hearing threshold it detects conceptually refers to the minimum sound pressure level at which a certain pure tone signal can cause hearing. Since pure tone audiometry is the most basic and important hearing detection method, it is the preferred auxiliary detection method in clinical practice. The audiometer used for pure tone audiometry can be selected according to the needs of the audiometry. The audiometer includes a manual audiometer, an automatic tracing audiometer and a computer-controlled audiometer. The only difference is that the manual audiometer or the computer-controlled audiometer has an ascending method. There are two modes of operation: the lifting method and the lifting method. At the same time, the test frequency needs to be manually carried out in the order of 1000, 2000, 3000, 4000, 6000, 8000, 500, 250, and 125Hz. After that, a review of 1000Hz is required, while the automatic tracing audiometer does not need to be controlled. will be done automatically in order.

The psychophysical tuning curve is mainly used to test and evaluate the frequency selectivity of the auditory system of the subject. The frequency selectivity of the auditory system refers to the ability of the biological auditory system to filter and distinguish certain stimulus frequency components. Psychophysical tuning curve detection is based on the masking effect, which refers to the phenomenon that the hearing threshold of a pure tone (stimulus sound) rises when another sound (masking sound) is added. If the frequency and intensity of the pure tone (stimulus) are fixed, and the center frequency and intensity of a narrow-band noise (masker) is changed, so that the subject just cannot hear the pure tone stimulus, the center frequency-intensity of the masking sound similar to V is obtained. The curve is the psychophysical tuning curve. Traditional psychophysical tuning curve detection is very time-consuming, but with the continuous improvement of experiments and testing methods, fast psychophysical tuning curve detection based on masking effect has been effectively applied to the evaluation of frequency selectivity.

In the prior art, the patent number is 3,970,785, and the U.S. patent titled "Tone count audiometric computer (pure tone audiometer)" uses signal generators at 500, 1000, 2000, 3000, 4000, and 6000 Hz to generate pure tone signals respectively. , adjust the intensity through the attenuator, and then select the required frequency signal through the frequency selector according to the test selection, and finally send the sound to the earphone through the tone interrupter and the power amplifier. Among them, the function of the tone interrupter is to truncate the pure tone into a sequence of short pure tones randomly ranging from one to four. The examinee needs to judge how many short pure tones there are and press the corresponding button on the feedback panel. The right and wrong of the subject can be used to determine whether the subject can hear the pure tone, and then determine the hearing threshold. However, this invention patent requires very cumbersome and complete hardware support, which is not easy to build and obtain; moreover, the test content is fixed and single, lacks flexibility, and only has the function of pure tone audiometry.

In another existing technology, the publication number is US 2009/0288489A1, and the US patent named "PURE TONE AUDIOMETER WITH AUTOMATED MASKING (with automatic masking pure tone audiometer)" proposes an automatic masking pure tone audiometry, which is also performed by a computer , a signal generating circuit, and earphones. It is particularly emphasized that its advantages lie in the addition of automatic masking sounds, and the addition of a wizard interface to the control platform, allowing pure tone audiometry to be performed without the assistance of a physician or audiologist, and further refined into automatic continuous testing and manual selection of frequency testing Two ways of testing. However, this document only completes the pure tone audiometry of several standard frequency points alone, which only reflects the intensity sensitivity of the auditory system to these specific frequencies, and cannot cooperate with other aspects to fully reflect the comprehensiveness of the auditory system. Condition.

In another prior art, the publication number is US 2004/0049125A1, and the U.S. patent titled "P Mobile terminal and mobile audiometer system (audiometry system using a mobile phone terminal)" utilizes a mobile phone or a personal computer as hardware to display audio on the Internet. Provide software and services for pure tone audiometry. Subjects can turn mobile phones and computers into audiometers through software, use speakers to make stimulating sounds, and keyboards as feedback receiving devices. Online analysis is performed through the Internet, and test results are given. result. Although this document has the characteristics of no need for specific hardware circuits and easy access, it is difficult to ensure the accuracy of the pure tone intensity heard by the subject in the test by means of speaker testing to adjust the gain, which then leads to deviations in the test results.

To sum up, some hearing test systems in the prior art have the following problems: 1. The hearing system requires very cumbersome and complete hardware support, which is not easy to build and obtain; 2. Although the hearing test system does not require specific hardware circuits, It is easy to obtain, but it is difficult to guarantee the accuracy of the pure tone intensity heard by the subject during the test, and the accuracy of the test results cannot be guaranteed; 3. The hearing test system has a single test function, and cannot perform a complete pure tone audiometry and psychophysical tuning curve at the same time It is difficult to comprehensively and three-dimensionally reflect the comprehensive situation of the auditory system in terms of intensity and frequency.

Contents of the invention

In view of the above problems, the purpose of the present invention is to provide a pure tone audiometry and psychophysical tuning curve detection system that is easier to obtain and build, and can simultaneously complete the complete pure tone audiometry and psychophysical tuning curve comprehensive detection.

To achieve the above object, the present invention takes the following technical solutions: a pure tone audiometry and psychophysical tuning curve detection system, which includes a computer, a multimedia sound card, a hand-held USB handle, a micro-speaker and earplugs; At least two buttons are provided, the micro-speaker includes at least two electro-acoustic transducers, the input end of the micro-speaker is connected to the sound card, and the output end is connected to the earplug; an auditory testing platform is arranged in the computer , the hearing test platform includes a hardware drive system and a test execution system; the hardware drive system includes a sound card driver connected to the sound card and a multimedia programming interface connected to the handle, and the test execution system includes a pure tone audiometry Detection module and a psychophysical tuning curve detection module; the pure tone audiometry detection module generates a corresponding digital pure tone stimulation signal according to the detection content and sends it to the sound card, and the sound card converts the digital pure tone stimulation signal into an analog voltage stimulation signal for transmission to one of the electric-acoustic transducers, the analog voltage stimulation signal is converted into an acoustic stimulation signal by the electric-acoustic transducer and sent to the earplugs, and the subject listens to each time through a button of the handle The judgment result of the received acoustic stimulation signal is sent back to the pure tone audiometry detection module through the multimedia programming interface. After the test of all test frequencies is completed, the pure tone audiometry detection module performs analysis and processing and obtains the pure tone audiometry detection module. Listening threshold; the psychophysical tuning curve detection module sets the stimulation signal frequency according to detection needs, sends pure tone stimulation signals and masking sound signals to the sound card, and the sound card converts digital pure tone stimulation signals into analog voltage stimulation signals and sends them to a The electro-acoustic transducer, the electro-acoustic transducer converts the analog voltage stimulation signal into a pure tone stimulation signal and sends it to the earplug, and simultaneously converts the digital masking sound signal into an analog voltage stimulation signal and sends it to the other said Electric-acoustic transducer, the electric-acoustic transducer converts the analog voltage stimulation signal into a masking sound stimulation signal and sends it to the earplugs; the subject will check whether he can hear the signal under the background of the masking sound through the two buttons of the handle. The judgment result of the pure tone stimulus sound signal is sent back to the psychophysical tuning curve detection module through the multimedia programming interface, and the psychophysical tuning curve detection module processes it to obtain the relationship curve between the masking sound intensity change and the masking sound frequency , the psychophysical tuning curve.

The pure tone audiometry detection module includes a start test program button, a handle configuration module, a feedback signal receiving module, a test type selection module, a test parameter selection module, a test control analysis module, a pure tone signal stimulation module, a result analysis module and a display module. The handle configuration module performs binding configuration on one of the two buttons of the handle, and sends the binding configuration result to the feedback signal receiving module; the test type selection module selects a test type, and the test parameter selection module sets Test method, test frequency and pure tone intensity upper and lower limits; The test control analysis module sends test frequency and pure tone initial test intensity to the pure tone signal stimulation module according to the test method and test parameters, and the pure tone signal stimulation module sends digital pure tone The stimulation signal is sent to the human ear, and the feedback signal receiving module receives the judgment result fed back by the subject through the handle button, and sends the judgment result back to the test control analysis module, which increases or decreases the pure tone intensity according to the result, and obtains the The hearing threshold under the stimulation of the pure tone signal is sent to the result analysis module for saving or updating, and at the same time it is judged whether the hearing thresholds of all test frequencies have been obtained; if all have been obtained, the audiogram is drawn and sent to the displayed on the display module.

The psychophysical tuning curve detection module includes a test program start button, a handle configuration module, a test parameter selection module, a test signal generation module, a test control module, a test signal stimulation module, a feedback signal receiving module, a result analysis module and a display module; The handle configuration module is used to bind and configure the two buttons of the handle, and send the binding configuration result to the feedback signal receiving module, and the test parameter selection module sets the stimulus sound frequency, stimulus sound intensity and masking sound Intensity upper limit, the test signal generation module generates pure tone stimulation sound and frequency sweep narrowband masking sound according to the received test parameters, and sends them to the test control module, and the test control module sends signals to the test signal stimulation module, Make it emit stimulating sound and masking sound, the feedback signal receiving module receives the judgment result fed back by the subject through the handle button, and sends the judgment result back to the test control module, which increases or decreases the masking sound intensity according to the result, And record the masking sound intensity in real time, and send the recorded value to the driving result analysis module, and the result analysis module draws the masking sound intensity change map, and performs smoothing and positive and negative average processing to obtain the psychophysical tuning curve, and compare it to sent to the display module for display.

The sound card is a multimedia sound card that can be connected to the computer through an IEEE1394 interface.

The present invention has the following advantages due to the adoption of the above technical scheme: 1. The present invention is due to setting a test execution system comprising a pure tone audiometry detection module and a psychophysical tuning curve detection module in the computer, so not only can obtain the hearing system The reflection of intensity sensitivity and the reflection of the frequency sensitivity of the auditory system, and can guide the detection of psychophysical tuning curve through the results of pure tone audiometry, which in turn can not reflect the pure tone audiometry through the audiometry results of psychophysical tuning curve The frequency selection characteristics are supplemented; thus the present invention provides a more complete and comprehensive means for the detection of the auditory system, effectively ensuring the comprehensiveness and accuracy of the detection results. 2. The present invention is based on a multimedia sound card with an IEEE 1394 interface, which is cheap, convenient and flexible to carry. Compared with the dedicated A/D acquisition card, it is more convenient for portability and replacement. At the same time, the professional-grade sound card with 24bit sampling depth ensures the accuracy of detection. The software platform is not limited to a certain A/D acquisition device, and there is no need to carry out different control programming for each A/D acquisition card. As long as there is a sound card with sufficient sampling accuracy and sampling rate, unified programming can be realized. Control over the sound card. 3. Since the present invention changes the psychophysical tuning curve detection module from the traditional gradual change of the center frequency of the masking sound to the continuous frequency sweeping change of the center frequency of the masking sound, it not only reduces the detection time from the traditional detection time of more than several hours to 490 seconds The psychophysical tuning curve detection can be quickly completed within a short period of time, and the fatigue degree of the examinee is greatly reduced. 4. Since the present invention adopts a multimedia sound card with an IEEE 1394 interface and connects it with a computer, it is not only easier to obtain and build than the existing pure tone audiometry audiometer and psychophysical tuning curve detection platform, but also does not need to be separated By setting up two sets of detection equipment, the test of two results can be completed, which effectively saves the cost. The invention can be widely used in the comprehensive comprehensive detection process of various auditory systems.

Description of drawings

Fig. 1 is a structural representation of the present invention

Fig. 2 is the structural representation of the pure tone audiometry detection module of the present invention

Fig. 3 is a schematic structural diagram of the psychophysical tuning curve detection module of the present invention

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, the present invention includes a computer 1 loaded with a windows system, a sound card 2, a hand-held USB handle 3, a micro speaker 4 and an earplug 5.

Sound card 2 of the present invention can adopt the multimedia sound card that can be connected with computer 1 by IEEE1394 interface, such as the present invention has used the 56 channel high-speed fire wire sound card that has 24bit sampling depth, 196kHz highest sampling rate professional index produced by RME company when detecting FireFace800, its signal-to-noise ratio is as high as 119dB. Of course, the sound card 2 of the present invention can also adopt other structural forms and connection methods, such as a multimedia sound card or a common sound card connected through a USB interface, combined with appropriate software programming procedures and the like.

The hand-held USB handle 3 of the present invention can adopt various handles, such as the F310 handle produced by Logitech Company used in the present invention when testing, and of course the hand-held USB handle 3 can also adopt various structural modes of other prior art. The handheld USB controller 3 needs to be configured with at least two buttons, one of which is bound as "hearing pure tone" and the other is bound as "cannot hear pure tone", so that the subject can send out a sound by operating the corresponding button critical result.

At least a pair of identical electro-acoustic transducers 41 are arranged in the microspeaker 4 of the present invention, and the input ends of the two electro-acoustic transducers 41 are connected with the sound card 2 through two TRS interfaces 42, and the two electro-acoustic transducers The output end of the transducer 41 is connected to the earplug 5 through two acoustic tubes 43. Miniature loudspeaker 4 can adopt the various products of prior art, used the ER2 plug-in type earphone that Etymotic Company produces during such as the present invention detects, and it has the continuous output capability more than 106dB SPL, 16kHz working bandwidth and interaural isolation more than 70dB.

An auditory testing platform 6 is arranged in the computer 1 of the present invention, and the auditory testing platform 6 comprises a hardware drive system 7 and a test execution system 8, and the hardware drive system 7 comprises a sound card driver 71 and a multimedia programming interface 72, and the test execution system 8 It includes a pure tone audiometry detection module 81 and a psychophysical tuning curve detection module 82 . The sound card driver 71 is used to drive the sound card 2 to work, and the multimedia programming interface 72 is used to connect the hand-held USB handle 3, and send the judgment result input by the hand-held USB handle 3 to the corresponding pure tone audiometry detection module 81 in the test execution system 8 Or the psychophysical tuning curve detection module 82 .

The pure tone audiometry detection module 81 can generate a corresponding digital pure tone stimulation signal according to the detection content, and send it to the sound card 2, and the sound card 2 performs D/A conversion of the digital pure tone stimulation signal into an analog voltage stimulation signal and sends it to two electro-acoustic converters. One of the transducers 41, the analog voltage stimulation signal is converted into an acoustic stimulation signal through the electro-acoustic transducer 41, and the acoustic stimulation signal is passed into the human ear through the acoustic tube 43 and the earplug 5; the subject passes the operation A button of the hand-held USB handle 3 sends the judgment result of the sound stimulation signal heard each time to the pure tone audiometry detection module 81 through the multimedia programming interface 72. After all the required test frequencies are tested, the pure tone audiometry detection The module 81 analyzes and processes the judgment result to obtain the hearing threshold under pure tone signal stimulation.

The psychophysical tuning curve detection module 82 can set the frequency of the stimulation signal according to the detection needs, and simultaneously send the pure tone stimulation signal and the masking sound signal to the sound card 2, and the sound card 2 performs D/A conversion of the pure tone stimulation signal and the masking sound signal into corresponding Simulate the voltage stimulation signal, and send the analog voltage stimulation signal corresponding to the pure tone stimulation signal to one of the electro-acoustic transducers 41 to convert it into a pure tone stimulation signal, and send the corresponding analog voltage stimulation signal to the masking sound signal to another The electro-acoustic transducer 41 is converted into a masking sound stimulation signal, and is sent into the human ear through the sound tube 43 and the earplug 5; The judgment result of hearing the pure tone stimulus sound signal in the background is sent back to the psychophysical tuning curve detection module 82 through the multimedia programming interface 72, and the psychophysical tuning curve detection module 82 processes it to obtain a series of masking sound intensity change values, and then the masking sound The change value of the sound intensity is processed to obtain the relationship curve between the change of the masking sound intensity and the frequency of the masking sound, that is, the psychophysical tuning curve.

In the above-mentioned embodiment, as shown in FIG. 2 , the pure tone audiometry detection module 81 of the present invention may include the following settings, namely including a handle configuration module 811, a feedback signal receiving module 812, a test type selection module 813, a test parameter selection module 814, Test control analysis module 815, pure tone signal stimulation module 816, result analysis module 817, display module 818 and start test program button (not shown in the figure).

The handle configuration module 811 is used for binding and configuring one of the two buttons of the handheld USB handle 3 , and sending the binding configuration result to the feedback signal receiving module 812 . The test type selection module 813 is used to select the test type, and the test parameter selection module 814 is used to select the test method, set the test frequency and the upper and lower limits of the pure tone intensity. After the test program button is started, the test type selection module 813 and the test parameter selection module 814 send selection results to the test control analysis module 815, and the test control analysis module 815 sends the test frequency and the pure tone initial test intensity to the pure tone according to the test method and test parameters. Signal stimulation module 816; And send signal to feedback signal receiving module 812 simultaneously, trigger it to start receiving the feedback signal of handheld USB handle 3; Pure tone signal stimulation module 816 sends digital pure tone stimulation signal to In the human ear; the subject sends the feedback signal to the feedback signal receiving module 812 through the button on the hand-held USB handle 3, and the feedback signal receiving module 812 judges whether the subject hears a pure tone, and sends the judgment result to the test control analysis Module 815; the test control analysis module 815 continuously increases or decreases the pure tone stimulation intensity according to the feedback result and sends it to the pure tone signal stimulation module 816, obtains the hearing threshold value under the pure tone frequency signal stimulation, and sends it to the result analysis module 817; The analysis module 817 saves or updates the hearing threshold results of the detected frequencies, and simultaneously judges whether the hearing thresholds of all the tested frequencies have been obtained, thereby completing the overall pure tone audiometry detection; if completed, draws an audiogram and sends it to the display module In 818, the pure tone audiometry result and the audiogram are displayed, and the pure tone audiometry detection is completed.

In the above embodiments, the test type selection module 813 may include a practice mode and an automatic test mode. The selection of methods in the test parameter selection module includes the ascending method and the ascending and descending method. If the test type is selected as practice mode, the test method is automatically set to lift method, and the test frequency is automatically set to 1000Hz; The order of 1000Hz is tested sequentially.

In the above-mentioned embodiments, the test control analysis module 815 can complete the pure tone audiometry test by adopting the ascending method or ascending and descending method commonly used in the pure tone audiometry, which will not be repeated here.

In the above embodiment, as shown in FIG. 3 , the psychophysical tuning curve detection module 82 of the present invention may include the following configurations, that is, a handle configuration module 821, a test parameter selection module 822, a test signal generation module 823, a test control module 824, A test signal stimulation module 825 , a feedback signal receiving module 826 , a result analysis module 827 , a display module 828 and a button to start a test program (not shown in the figure).

The handle configuration module 821 is used to bind and configure the two buttons of the handheld USB handle 3, and send the binding configuration result to the feedback signal receiving module 826. The test parameter selection module 822 is used to set the pure tone frequency, pure tone intensity and masking sound Strength cap. After starting the test program button, the test parameter selection module 822 sends each parameter to the test signal generation module 823, and the test signal generation module 823 generates pure tone stimulus and sweep frequency narrowband masking sound respectively according to the selected parameters, for example: the test signal generation module 823 respectively Generate 490 seconds of pure tone stimulation sound and 490 seconds of sweeping narrow-band masking sound. The center frequency of the masking sound increases from 0.5 times the pure tone frequency to 2 times the pure tone frequency at a uniform speed on the logarithmic frequency, and then reversely decreases back to 0.5 times the pure tone frequency. 5 seconds of silence, 240 seconds of rising process, and then 5 seconds of silence, 240 seconds of falling process, followed by a frequency sweep test to mask the rise and fall of the center frequency, the initial intensity of the masking sound is 50dB SPL. The test signal generating module 823 sends the generated pure tone stimulation sound and masking sound to the test signal stimulation module 825, and simultaneously sends a signal to the test control module 824 to trigger its work, and the test control module 824 sends a signal to the test signal stimulation module 825 to make it simultaneously Stimulating sound and masking sound are emitted, and the feedback signal receiving module 826 is monitored in real time, and the masking sound is increased or decreased at a certain rate (such as 2dB/s, but not limited to this) according to the judgment result transmitted back by the feedback signal receiving module 826 Intensity of each masking sound is recorded in real time at the same time, the test control module 824 sends each masking sound intensity to the result analysis module 827, and the result analysis module 827 performs smoothing and positive and negative processing on each masking sound intensity, and each The psychophysical tuning curve is obtained by connecting the masking sound intensity values, and it is sent to the display module 828 for display.

In addition, when the selected stimulus frequency is the frequency tested in the pure tone audiometry module, if the hearing threshold of the pure tone frequency is saved in the pure tone audiometry detection, the test parameter selection module 822 will be based on the test results of the pure tone audiometry detection module 81, Quickly set the intensity of the initial stimulus, and add 10dBSPL to the hearing threshold of the pure tone audiometry test results at the test frequency.

In each of the above-mentioned embodiments, the multimedia programming interface 72 can adopt the DirectX programming interface, which is used to inquire whether there is a hand-held USB handle 3 connected to the computer 1 and bind it before the test, and to inquire about the bound hand-held USB handle during the test. 3 is pressed and fed back to the corresponding pure tone audiometry detection module 81 or psychophysical tuning curve detection module 82.

The above-mentioned embodiments are only used to illustrate the present invention, wherein the structure and connection mode of each detection system can be changed, and all equivalent transformations and improvements carried out on the basis of the technical solutions of the present invention should not be excluded. outside the protection scope of the present invention.

Claims (5)

1. a pure tone audiometry and psychophysical tuning curve detection system, it includes a computer, a multimedia sound card, a hand-held USB handle, a miniature loudspeaker and earplugs; said handle is provided with at least two buttons, said miniature The speaker includes at least two electro-acoustic transducers, the input end of the micro speaker is connected to the sound card, and the output end is connected to the earplug; An auditory test platform is arranged in the computer, and the auditory test platform includes a hardware drive system and a test execution system; the hardware drive system includes a sound card driver connected to the sound card and a multimedia programming interface connected to the handle, so The test execution system includes a pure tone audiometry detection module and a psychophysical tuning curve detection module; The pure tone audiometry detection module generates a corresponding digital pure tone stimulation signal according to the detection content and sends it to the sound card, and the sound card converts the digital pure tone stimulation signal into an analog voltage stimulation signal and sends it to the electro-acoustic transducer, The analog voltage stimulation signal is converted into an acoustic stimulation signal by the electro-acoustic transducer and sent to the earplug, and the subject passes a button on the handle to pass the judgment result of the acoustic stimulation signal heard each time through the The multimedia programming interface sends back to the pure tone audiometry detection module, and after completing the tests of all test frequencies, the pure tone audiometry detection module performs analysis and processing and obtains the hearing threshold value stimulated by the pure tone signal; The psychophysical tuning curve detection module sets the frequency of the stimulation signal according to the detection needs, and sends the pure tone stimulation signal and the masking sound signal to the sound card, and the sound card converts the digital pure tone stimulation signal into an analog voltage stimulation signal and sends it to an electronic circuit. - the acoustic transducer, the electro-acoustic transducer converts the analog voltage stimulation signal into a pure tone stimulation signal and sends it to the earplug, and simultaneously converts the digital masking sound signal into an analog voltage stimulation signal and sends it to the other electro-acoustic stimulation signal Transducer, the electro-acoustic transducer converts the analog voltage stimulation signal into a masking sound stimulation signal and sends it to the earplugs; the subject will check whether the pure tone stimulation can be heard in the background of the masking sound through the two buttons of the handle The judgment result of the acoustic signal is sent back to the psychophysical tuning curve detection module through the multimedia programming interface, and the psychophysical tuning curve detection module processes it to obtain the relationship curve between the masking sound intensity change and the masking sound frequency, that is, the psychophysical tuning curve detection module. Physical tuning curve. 2. a kind of pure tone audiometry and psychophysical tuning curve detection system as claimed in claim 1, is characterized in that: described pure tone audiometry detection module comprises start test program button, handle configuration module, feedback signal receiving module, test type Selection module, test parameter selection module, test control analysis module, pure tone signal stimulation module, result analysis module and display module, the handle configuration module performs binding configuration on one of the two buttons of the handle and sends the binding configuration Result to the feedback signal receiving module; the test type selection module selects the test type, and the test parameter selection module sets the upper and lower limits of the test method, test frequency and pure tone intensity; the test control analysis module according to the test method and test parameters, Send the test frequency and the pure tone initial test intensity to the pure tone signal stimulation module, the pure tone signal stimulation module sends the digital pure tone stimulation signal to the human ear, and the feedback signal receiving module receives the judgment result fed back by the subject through the handle button , and send the judgment result back to the test control analysis module, which increases or decreases the pure tone intensity according to the result to obtain the hearing threshold value stimulated by the pure tone signal, and sends it to the result analysis module for saving or updating, At the same time, it is judged whether the hearing thresholds of all test frequencies have been obtained; if all have been obtained, an audiogram is drawn and sent to the display module for display. 3. a kind of pure tone audiometry and psychophysical tuning curve detection system as claimed in claim 1 or 2, is characterized in that: described psychophysical tuning curve detection module comprises start test program button, handle configuration module, test parameter selection module , a test signal generating module, a test control module, a test signal stimulation module, a feedback signal receiving module, a result analysis module and a display module; the handle configuration module is used to bind and configure the two buttons of the handle, and send a binding The configuration result is sent to the feedback signal receiving module, and the test parameter selection module sets the stimulus sound frequency, stimulus sound intensity and masking sound intensity upper limit, and the test signal generation module generates pure tone stimulus sound and sweeping sound according to the received test parameters. Narrow-band masking sound, and sent to the test control module, the test control module sends a signal to the test signal stimulation module to make it emit stimulation sound and masking sound, and the feedback signal receiving module receives the subject through the handle button Feedback the judgment result, and send the judgment result back to the test control module, which increases or decreases the masking sound intensity according to the result, and records the masking sound intensity in real time, and sends the recorded value to the driving result analysis module, which is determined by the result The analysis module draws a masking sound intensity change map, and performs smoothing and positive and negative average processing to obtain a psychophysical tuning curve, and sends it to the display module for display. 4. A pure tone audiometry and psychophysical tuning curve detection system according to claim 1 or 2, characterized in that: the sound card is a multimedia sound card that can be connected to the computer through an IEEE1394 interface. 5. A pure tone audiometry and psychophysical tuning curve detection system as claimed in claim 3, characterized in that: the sound card is a multimedia sound card capable of being connected to the computer through an IEEE1394 interface.

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