CN111202527B - Objective test system for infant audiometry - Google Patents
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Abstract
The invention relates to the technical field of infant audiometry, in particular to an objective test system for infant audiometry, which comprises a stimulus sound generation subsystem and a behavior response subsystem, wherein the stimulus sound generation subsystem is used for acquiring generation control parameters and generating stimulus sound signals according to the generation control parameters, and the behavior response subsystem is used for acquiring response information generated by a subject receiving the stimulus sound signals; the system also comprises a self-checking subsystem and an identification and analysis subsystem, wherein the self-checking subsystem is used for acquiring a detection signal generated according to the stimulation sound signal, the identification and analysis subsystem is used for generating a signal difference value according to the generation control parameter and the detection signal, and generating a test result according to the reaction information and the generation control parameter when the signal difference value is smaller than a preset error threshold value. By adopting the scheme, the generated stimulating sound signals can be detected, and the stimulating sound signals are generated according to the generation control parameters, so that the hearing of the testee is accurately evaluated.
Description
Technical Field
The invention relates to the technical field of infant audiometry, in particular to an objective test system for infant audiometry.
Background
The sense of hearing is a sense organ of considerable importance to human beings, which can be considered as the basis for human communication and communication, and for children, the sense of hearing is the basis for the perception of world and language development, so that early detection of hearing impairment in children is of great significance to the language and language development of children. The earlier a hearing impairment is found in a child, the hearing aid or cochlear implant can be used for these children at an early stage, providing additional hearing and speech training for these children as early as possible, thereby assisting these children in language development and reducing the impact of hearing loss on their language and language development.
At present, the hearing evaluation of children usually adopts an objective hearing detection mode and a behavior audiometry mode, wherein the objective hearing detection mode is to record brainstem or cortex reaction potential of a subject by using a technical means, so as to obtain a hearing threshold of the subject, but due to lack of specificity, an electrophysiological value is often higher than a subjective hearing threshold, namely, the obtained hearing threshold is different from an actual threshold of the subject. The children behavior audiometry is to judge the hearing threshold of a subject through the response of the subject to sound (for example, turning the head to a sound source), but the test mode needs the cooperation of the subject during the test process, so the state, age, maturity and the like of the subject can influence the hearing threshold obtained by the test. For younger children, especially children of 3-9 months, the fitting degree is low, so the hearing evaluation method usually adopted is objective hearing detection, but the hearing evaluation method cannot effectively and reliably detect the hearing threshold of the children, and therefore an objective test system capable of evaluating the hearing of the children of 3-9 months is urgently needed.
Disclosure of Invention
The objective test system for infant audiometry is capable of detecting the generated stimulus sound signals and ensuring that the stimulus sound signals are generated according to the generation control parameters, so that the audiometry of a subject is accurately evaluated.
The basic scheme provided by the invention is as follows: an objective test system for infant audiometry comprises a stimulus sound generation subsystem and a behavior response subsystem, wherein the stimulus sound generation subsystem is used for acquiring generation control parameters and generating stimulus sound signals according to the generation control parameters, and the behavior response subsystem is used for acquiring response information generated by a subject receiving the stimulus sound signals; the system also comprises a self-checking subsystem and an identification and analysis subsystem, wherein the self-checking subsystem is used for acquiring a detection signal generated according to the stimulation sound signal, the identification and analysis subsystem is used for generating a signal difference value according to the generation control parameter and the detection signal, and generating a test result according to the reaction information and the generation control parameter when the signal difference value is smaller than a preset error threshold value.
Description of the nouns: the generation control parameters are related parameters of the stimulating sound signal, including test frequency, test loudness and stimulating sound type.
The basic scheme has the working principle and the beneficial effects that: the stimulus sound generation subsystem generates a stimulus sound signal according to the generation control parameter, and the stimulus sound signal is the basis of audiometry. The behavior response subsystem is used for acquiring response information generated after the test subject receives the stimulation sound signal, such as the change of the pupil diameter, the rotation of the head and the like, and acquiring the response information of the test subject so as to judge whether the test subject receives the stimulation sound signal. The self-checking subsystem is used for collecting detection signals generated according to the stimulation sound signals received by other paths. The recognition analysis subsystem is used for generating a signal difference value according to the generation control parameter and the detection signal, and the signal difference value reflects the similarity degree of the stimulation sound signal and the generation control parameter. And when the signal difference value is smaller than a preset error threshold value, generating a test result according to the response information and the generation control parameter, namely when the similarity degree of the stimulus sound signal and the generation control parameter is higher, considering that the stimulus sound signal is correct, and generating the test result according to the response information and the generation control parameter.
The self-checking subsystem is used for detecting the generated stimulating sound signals, so that the stimulating sound signals are generated according to the generation control parameters, and the hearing of the testee is accurately evaluated.
Further, the test system further comprises a management terminal, wherein the management terminal is used for acquiring the test starting signal. Has the beneficial effects that: the management terminal is used by a tester, the tester can select any time to test, and during testing, the tester inputs a test starting signal through the management terminal, namely representing the start of testing.
Further, the stimulus sound generation subsystem is further configured to acquire a test frequency, a test loudness, and a stimulus sound type, and generate the generation control parameter according to one or more of the test frequency, the test loudness, and the stimulus sound type.
Description of the nouns: the test frequency is the frequency of the stimulating sound signal, including 500Hz, 1000Hz, 2000Hz, 4000Hz and 8000Hz; the test loudness is the loudness of the stimulation sound signal, and comprises 1 to 90dB; the stimulus sound type is the common type of stimulus sound signal in audiometry test, and comprises pure sound, twitter sound and narrow band noise.
Has the advantages that: and generating generation control parameters by selecting different test frequencies, test loudness and stimulus sound types according to different audiometry requirements, so as to obtain stimulus sound signals meeting the audiometry requirements.
Further, the stimulus sound generation subsystem is also used for replacing one or more of the test frequency, the test loudness and the stimulus sound type, and generating the generation control parameters according to the replaced test frequency, test loudness and stimulus sound type. Has the beneficial effects that: according to different test frequencies, test loudness and stimulus sound type combinations, different stimulus sound signals can be obtained, and therefore the omnibearing hearing test for the infants is achieved.
Furthermore, the behavior response subsystem is also used for acquiring behavior information of the testee, acquiring stimulation information of the testee when the stimulation sound generation subsystem generates the stimulation sound signals, and generating response information according to the behavior information and the stimulation information. Has the beneficial effects that: the stimulation information is the behaviors of the testee when the stimulation sound signals are generated, the behavior information is the behaviors of the testee before and after the stimulation sound signals are generated, whether the testee receives the stimulation sound signals is comprehensively judged according to the behaviors of the testee before and after the stimulation sound signals are generated, so that the judgment result is related to the testee, the judgment error caused by the specificity of part of the testee is reduced, and the accuracy of the hearing test of the testee is improved.
Further, the behavior information and the stimulus information both include pupil diameters of the subjects, the response information includes whether stimulus sound is heard or not, the behavior response subsystem is further configured to generate a pupil diameter average value according to the pupil diameters in the behavior information, and judge whether the pupil diameters in the stimulus information are larger than the pupil diameter average value or not, if yes, the response information for hearing the stimulus sound is generated; if not, generating the response information without hearing the stimulation sound. Has the advantages that: the change of the pupil diameter is hardly controlled by a subject, the change of the pupil diameter cannot be controlled for children, meanwhile, the change of the pupil diameter is related to the received stimulus sound signal, a pupil diameter average value is generated according to the pupil diameter in the behavior information, and the pupil diameter in the stimulus information is not removed from the behavior information.
Further, the self-checking subsystem is used for acquiring sound information when the management terminal acquires a start test signal and the behavior reaction subsystem generates reaction information, the sound information comprises continuous self-checking loudness, and the self-checking subsystem is used for screening the self-checking loudness with the maximum decibel value in the sound information and generating a detection signal according to the screened self-checking loudness. Has the advantages that: and acquiring sound information in the audiometry process, and screening the self-checking loudness when the stimulating sound signal is generated through the decibel value so as to generate a detection signal and judge whether the stimulating sound signal is generated according to the generation control parameter, thereby improving the accuracy of the test result. Of course, the stimulation sound signal can be controlled to be generated at a certain moment, and the obtained sound information at the same moment is the screened self-checking loudness.
Further, the identification and analysis subsystem is also used for generating an audiometric report according to a plurality of test results of the same subject. Has the advantages that: the test result is the audiometry condition of the subject under a certain occurrence control parameter, the audiometry report is generated according to a plurality of test results generated by different occurrence control parameters, and the audiometry report reflects the hearing status of the subject, such as the hearing threshold of the subject, so that the test personnel can conveniently and visually check the audiometry condition.
Furthermore, the behavior reaction subsystem is also used for identifying the behavior information in real time, starting timing when the change value of the behavior information is smaller than a preset floating threshold value, and generating a generation signal when the preset timing duration is reached; and the stimulus sound generation subsystem is used for generating stimulus sound signals according to the generation control parameters when receiving the generation signals. Has the advantages that: the behavior information of the subject is identified, when the change value of the behavior information is smaller than a preset floating threshold value, the fact that the subject is watching or concentrating attention is indicated, and when the watching time of the subject reaches the timing length, a stimulating sound signal is generated, so that the situation that the subject subjectively controls the behavior after receiving the stimulating sound signal and the final audiometric result is influenced is avoided.
Further, the behavior reaction subsystem is used for judging whether the change value of the behavior information is smaller than a preset floating threshold value or not in real time, resetting timing if the change value of the behavior information is not smaller than the floating threshold value in the timing process, and restarting timing when the change value of the behavior information is smaller than the floating threshold value again. Has the advantages that: the change value of the behavior information of the subject is guaranteed to be smaller than a preset floating threshold value within a certain time period, and the subject stands to watch or concentrate attention, so that in the timing process, if the change value of the behavior information is not smaller than the floating threshold value, timing needs to be reset, and the condition that the subject subjectively controls the behavior after receiving the stimulation sound signal and influences the final audiometric result is avoided.
Drawings
FIG. 1 is a logic block diagram of a first embodiment of an objective test system for infant audiometry according to the present invention;
FIG. 2 is a top view of a third embodiment of an objective testing system for infant audiometry according to the present invention;
fig. 3 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 2 of an objective test system for infant audiometry in accordance with the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the testing device comprises a box body 1, a testing box 302, a mounting seat 3, a balancing weight 301, a loudspeaker 402, a microphone 401, a mounting plate 2, a fixture block 5, a T-shaped hole 201, a first chain wheel 602, a second chain wheel 603, a first operating rod 601, a second operating rod 604, a supporting rod 7 and a supporting column 202.
Example one
An objective test system for infant audiometry is shown in figure 1 and comprises a management terminal, a stimulus sound generation subsystem, a behavior response subsystem, a self-checking subsystem, an identification analysis subsystem and a database (a database is not shown in the figure), wherein a test frequency recording table, a test loudness recording table and a stimulus sound type recording table are stored in the database, and test frequencies are recorded in the test frequency recording table from low to high, wherein the test frequencies comprise 500Hz, 1000Hz, 2000Hz, 4000Hz and 8000Hz; recording test decibels including 10dB, 15dB, 20dB, 80dB, 85dB and 90dB in a test loudness recording table from small to large; the stimulus type record table records the stimulus type, which comprises pure sound, twitter sound and narrow band noise.
And the management terminal is used for acquiring a test starting signal and sending the test starting signal to the stimulus sound generation subsystem, the behavior reaction subsystem and the self-checking subsystem.
A stimulating acoustic generation subsystem comprising:
and the stimulus sound preparation module is used for screening out the test frequency, the test loudness and the stimulus sound type from the test frequency record table, the test loudness record table and the stimulus sound type record table of the database when receiving the starting test signal, and generating the generation control parameters according to the test frequency, the test loudness and the stimulus sound type.
And the sound generation module is used for generating a stimulation sound signal according to the generation control parameter and sending the generation control parameter to the recognition analysis subsystem.
A behavioral response subsystem comprising:
and the behavior recording module is used for collecting behavior information of the testee when receiving the test starting signal and storing the behavior information in the database. In this embodiment, the behavior information includes the pupil diameter of the subject, and in other embodiments, the behavior information further includes the turning behavior of the subject.
And the test recording module is used for collecting stimulation information made by the subject according to the stimulation sound signal when the sound generation module generates the stimulation sound signal, wherein in the embodiment, the stimulation information comprises the pupil diameter of the subject.
And the response judging module is used for generating response information according to the behavior information and the stimulation information, wherein the response information comprises whether the stimulation sound is heard or not. And the response information is sent to the identification and analysis subsystem, and a single test ending signal is generated and sent to the stimulus sound generation subsystem and the self-checking subsystem. Specifically, a pupil diameter average value is generated according to the pupil diameter in the behavior information, and when the pupil diameter in the stimulus information is larger than the pupil diameter average value, the generated response information is that stimulus sound is heard; otherwise, the generated response information is that the stimulation sound is not heard.
A self-test subsystem comprising:
and the sound collection module is used for collecting the sound of the test environment when receiving the test starting signal, stopping collecting the sound of the test environment when receiving the single test ending signal, and generating sound information according to the collected sound, wherein the sound information comprises continuous self-checking loudness.
And the sound detection module is used for analyzing the sound information and screening the self-checking loudness with decibel values higher than other decibel values. The screening process comprises the following steps: and sequentially obtaining a plurality of decibel values of the self-checking loudness, comparing the decibel values, and obtaining the self-checking loudness corresponding to the decibel value with the maximum numerical value, namely the self-checking loudness screened out. The screened self-checking loudness is a detection signal generated according to the stimulation sound signal, and the detection signal is sent to the identification analysis subsystem. Specifically, any self-check loudness is obtained as a self-check loudness B, two self-check loudness adjacent to the self-check loudness B are obtained as a self-check loudness A and a self-check loudness C, whether the decibel value of the self-check loudness B is larger than the decibel value of the self-check loudness A and the decibel value of the self-check loudness C or not is judged, and when the decibel value of the self-check loudness B is larger than the decibel value of the self-check loudness A and the decibel value of the self-check loudness B is larger than the decibel value of the self-check loudness C, a decibel difference value between the self-check loudness A and the self-check loudness B is recorded. And sequentially acquiring all self-checking loudness in the sound information as self-checking loudness B for judgment, and sequentially arranging the recorded decibel difference values according to the numerical value, wherein the self-checking loudness B corresponding to the decibel difference value with the largest numerical value is the screened self-checking loudness. In other embodiments, the self-check loudness is sequentially arranged according to the decibel value, and the self-check loudness with the maximum decibel value is the self-check loudness screened out.
A recognition analysis subsystem comprising:
the self-checking judgment module is preset with an error threshold, which is set by a person skilled in the art according to the precision of the self-checking subsystem, and in this embodiment, the error threshold is 3 db. The self-checking judging module is used for receiving the generation control parameters and the detection signals, generating signal difference values according to decibel values of the tested loudness in the generation control parameters and decibel values of the detection signals, judging whether the signal difference values are smaller than an error threshold value or not, and if yes, generating self-checking normal signals; if not, generating a retest signal, and sending the self-checking normal signal and the retest signal to the stimulus sound generation subsystem.
And the test judgment module is used for receiving the response information, generating a test result according to the response information and the generation control parameter when the self-checking judgment module generates a self-checking normal signal, and storing the test result in the database, wherein the test result comprises test frequency, test loudness, stimulus sound type and test response. In other embodiments, the test results are generated based on the reaction information and the detection signals.
When the stimulus sound generation subsystem receives a single test ending signal and a self-checking normal signal, the stimulus sound preparation module is used for replacing the test frequency, the test loudness and the stimulus sound type in the generation control parameters, sending the replaced generation control parameters to the sound generation module to generate a stimulus signal, and generating an ending test signal and sending the ending test signal to the recognition analysis subsystem until the replacement combination of all the test frequency, the test loudness and the stimulus sound type is completed. When the stimulus sound preparation module changes the test frequency, the test loudness and the stimulus sound type in the generation control parameters, firstly, the stimulus sound type and the test frequency are unchanged, and the test loudness is changed in sequence according to a test loudness recording list; sequentially replacing the test frequency according to the test frequency recording table, and repeating the step of replacing the test loudness after replacing the test frequency each time; and finally, replacing the stimulus sound type according to the stimulus sound type recording table, repeating the step of replacing the test frequency, and generating a test ending signal when the stimulus sound type is replaced, so as to obtain test results under different stimulus sound types, test loudness and test frequencies. When the stimulus sound generation subsystem receives the single test ending signal and receives the retest signal, the stimulus sound preparation module is used for sending the generation control parameter to the sound generation module to generate the stimulus signal, namely the generation control parameter is not replaced, and the previous generation control parameter is used for retesting.
The recognition analysis subsystem further comprises:
and the test analysis module is used for calling all test results of the subject from the database when receiving the test ending signal, and analyzing and generating an audiometric report according to all the test results, wherein the audiometric report comprises a hearing threshold. And the management terminal is used for displaying the audiometric report.
Example two
The difference between the present embodiment and the first embodiment is: the time at which the stimulating acoustic signal is generated is based on the occurrence control parameter.
The behavior reaction subsystem also comprises a behavior recognition module. The behavior identification module is preset with a floating threshold and a timing duration, the floating threshold is a normal variation range of the behavior information of the subject under the condition of no stimulation, in this embodiment, the floating threshold is a normal range of the pupil diameter variation of the subject under the condition of no stimulation, and the timing duration is 5 seconds. The behavior identification subsystem is also used for identifying the behavior information of the testee in real time, starting timing when the change value of the behavior information is smaller than the floating threshold value, generating a generation signal when the timing duration is reached, and sending the generation signal to the stimulus sound generation subsystem. In the timing process, if the change value of the behavior information is not smaller than the floating threshold value, the timing is reset, and when the change value of the behavior information is smaller than the floating threshold value again, the timing is restarted.
And the sound generation module is used for receiving the generation control parameters sent by the stimulus sound preparation module, generating stimulus sound signals according to the generation control parameters when the stimulus sound generation subsystem receives the starting test signals or the generation signals, and sending the generation control parameters to the recognition analysis subsystem.
EXAMPLE III
The difference between the present embodiment and the first embodiment is: an objective test system for infant audiometry comprises a test device, wherein the test device uses the stimulus sound generation subsystem, the behavior response subsystem, the self-inspection subsystem and the identification analysis subsystem.
As shown in the accompanying drawings 2 and 3, the testing device comprises a box body 1, the open-top of box 1, box 1 has the left side wall, the front side wall, right side wall and back lateral wall enclose to close and form, sliding connection has mounting panel 2 in box 1, mounting panel 2 is used for sealing the opening of box 1, first through-hole has been seted up to the left side wall of box 1 and the upper end of right side wall, first through-hole is pegged graft and is had fixture block 5, first through-hole is passed to the one end of fixture block 5, and offset with the bottom of mounting panel 2, the other end circumference of fixture block 5 extends and forms the stop part, the longitudinal section area of stop part is greater than the longitudinal section area of first through-hole. The top of mounting panel 2 still is equipped with the handle, and the handle passes through screw and mounting panel 2 fixed connection, and the quantity of handle is two, and the handle is located one side that mounting panel 2 is close to preceding lateral wall and the one side that is close to the back lateral wall respectively. The top of the mounting plate 2 is further provided with a T-shaped hole 201, the T-shaped hole 201 comprises a vertical portion and a transverse portion, the vertical portion is parallel to the left side wall, the transverse portion is parallel to the front side wall, and the left end of the transverse portion is communicated with the middle of the vertical portion.
The left side wall is provided with a first operation hole, the upper end of the first operation hole is rotatably connected with a first chain wheel 602, the lower end of the first operation hole is rotatably connected with a second chain wheel 603, the first chain wheel 602 and the first chain wheel 602 are in cross transmission through a hinge, and the axial leads of the first chain wheel 602 and the second chain wheel 603 are parallel to the left side wall. The center of the end face of the first sprocket 602 is fixedly connected with a first operating rod 601, the center of the second sprocket 603 is fixedly connected with a second operating rod 604, the first operating rod 601 is fixedly connected with the first sprocket 602 through a screw, and the second operating rod 604 is fixedly connected with the second sprocket 603 through a screw. One end of the second operating rod 604, which is far away from the second chain wheel 603, is hinged to a supporting rod 7, one end of the supporting rod 7, which is far away from the second operating rod 604, passes through the T-shaped hole 201, that is, the upper end of the supporting rod 7 is located above the mounting plate 2, and the lower end of the supporting rod 7 is located below the mounting plate 2. Upper end fixedly connected with mount pad 3 of bracing piece 7, the display is installed in the left side of mount pad 3, still be equipped with the stopper on the bracing piece 7, the stopper includes last stopper and lower stopper that sets up from top to bottom, go up the stopper and be greater than mounting panel 2's thickness with the distance of stopper down, when bracing piece 7 is located the horizontal portion in T type hole 201, it is located mounting panel 2's top to go up the stopper, lower stopper is located mounting panel 2's below, when bracing piece 7 is located the vertical portion in T type hole 201, go up the stopper, lower stopper homoenergetic and the inner wall sliding connection of vertical portion.
The left side of mount pad 3 still is equipped with eye movement appearance and test box 302, and test box 302 is open structure, and the less one end of test box 302 bore bonds with mount pad 3, and the display all is located test box 302 with the eye movement appearance. The right side of the mounting base 3 is also provided with a balancing weight 301 for balancing the weight of the test box 302. The right side of the top of the mounting board 2 is also provided with a speaker 402 and a microphone 401, the speaker 402 facing to the left. A support column 202 is bonded at the bottom of the mounting plate 2, and the length of the support column 202 is greater than the vertical distance from the top of the upper limit block to the lower end of the support rod 7. The left side wall also starts to have a second operation hole, and the second operation hole is located below the first operation hole and is used for the tester to fixedly connect the second operation rod 604 and the second chain wheel 603 through screws.
When the tester is used, the head of a test subject is positioned at one end with a larger caliber of the test box 302, aiming at children, the tester needs assistance of an adult to test, the children are called the test subject, the adult is called an assistant, the assistant uses arms to clamp the free end of the first operating rod 601 and applies acting force to the free end of the first operating rod 601, the height of the test subject is related to the length of the upper body of the assistant, the length of the upper body of the assistant can control the first operating rod 601, for example, the assistant has a shorter height and a shorter length, which is equivalent to that the first operating rod 601 moves downwards, the left end of the second operating rod 604 moves upwards and moves downwards through the transmission of the first chain wheel 602 and the second chain wheel 603, and the upper limit block and the lower limit block are positioned at the vertical part of the T-shaped hole 201, namely, the support rod 7 moves downwards at the moment, so that the mounting base 3 moves downwards, the height of the displayer is adjusted, and the picture center of the displayer and the sight line of the test subject are positioned at the same horizontal line.
After the use, in order to avoid collision, a tester separates the second chain wheel 603 and the second operating rod 604 through the second operating hole, and moves the supporting rod 7 to the right after separation, because the upper limiting block and the lower limiting block are arranged, the supporting rod 7 is supported, and the supporting rod 7 can only slide in the transverse part of the T-shaped hole 201. And then the fixture blocks 5 on the left side wall and the right side wall are taken down, so that the mounting plate 2 can move downwards in the box body 1 until the bottom of the support column 202 abuts against the bottom of the box body 1, and at the moment, the mounting seat 3, the test box 302, the eye tracker and the like are all located in the box body 1, thereby avoiding colliding with related test instruments. The tester can also put up the cloth curtain at the opening part of box 1 to avoid the dust to drop to the test instrument.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (9)
1. An objective test system for infant audiometry comprises a stimulus sound generation subsystem and a behavior response subsystem, wherein the stimulus sound generation subsystem is used for acquiring generation control parameters and generating stimulus sound signals according to the generation control parameters, the behavior response subsystem is used for acquiring response information generated by a subject receiving the stimulus sound signals, and the response information comprises whether stimulus sound is heard or not; the method is characterized in that: the system also comprises a self-checking subsystem and an identification and analysis subsystem, wherein the self-checking subsystem is used for acquiring a detection signal generated according to the stimulation sound signal, the identification and analysis subsystem is used for generating a signal difference value according to the generation control parameter and the detection signal, and generating a test result according to the reaction information and the generation control parameter when the signal difference value is smaller than a preset error threshold value;
the behavior reaction subsystem is also used for acquiring behavior information of the subject, wherein the behavior information is the pupil diameter of the subject, and is also used for identifying the behavior information in real time, starting timing when the change value of the behavior information is smaller than a preset floating threshold value, and generating a generation signal when the preset timing duration is reached; and when the stimulus sound generation subsystem receives the generation signal, the stimulus sound generation subsystem generates a stimulus sound signal according to the generation control parameter.
2. The objective test system for infant audiometry according to claim 1, wherein: the test system further comprises a management terminal, and the management terminal is used for acquiring the test starting signal.
3. An objective test system for infant audiometry, according to claim 2, characterized by: the stimulus sound generation subsystem is further used for acquiring the test frequency, the test loudness and the stimulus sound type, and generating generation control parameters according to one or more of the test frequency, the test loudness and the stimulus sound type.
4. An objective test system for infant audiometry according to claim 3, wherein: the stimulation sound generation subsystem is also used for replacing one or more of the testing frequency, the testing loudness and the stimulation sound type, and generating generation control parameters according to the replaced testing frequency, the testing loudness and the stimulation sound type.
5. The objective test system for infant audiometry according to claim 4, wherein: the behavior response subsystem is also used for acquiring stimulation information of the testee when the stimulation sound generation subsystem generates the stimulation sound signals, the stimulation information is the pupil diameter of the testee when the stimulation sound signals are generated, and the response information is generated according to the behavior information and the stimulation information.
6. The objective test system for infant audiometry according to claim 5, wherein: the behavior response subsystem is also used for generating a pupil diameter average value according to the pupil diameter in the behavior information, judging whether the pupil diameter in the stimulation information is larger than the pupil diameter average value or not, and if so, generating response information for hearing the stimulation sound; if not, generating the response information without hearing the stimulation sound.
7. The objective testing system for infant audiometry according to claim 6, wherein: the self-checking subsystem is used for acquiring sound information when the management terminal acquires a starting test signal and the behavior reaction subsystem generates reaction information, the sound information comprises continuous self-checking loudness, and the self-checking subsystem is used for screening the self-checking loudness with the maximum decibel value in the sound information and generating a detection signal according to the screened self-checking loudness.
8. The objective testing system for infant audiometry according to claim 7, wherein: the identification and analysis subsystem is also used for generating an audiometric report according to a plurality of test results of the same subject.
9. The objective testing system for infant audiometry according to claim 8, wherein: the behavior reaction subsystem is used for judging whether the change value of the behavior information is smaller than a preset floating threshold value or not in real time, resetting timing if the change value of the behavior information is not smaller than the floating threshold value in the timing process, and restarting timing when the change value of the behavior information is smaller than the floating threshold value again.
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