JPH066121B2 - Audiometry - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an audiometry device, and is particularly suitable for application in mass screening.

[Outline of Invention]

According to the present invention, in the audiometry device, the inspection sound automatic listening process is executed, so that the burden of the measuring work of the examiner can be further reduced, and thereby the accuracy of determining whether or not the hearing is possible can be improved.

[Conventional technology]

Conventionally, a so-called audiometer has been used as an audiometric device, and in particular, a device having a configuration shown in FIG. 5 has been used as a screening inspection device for screening whether or not the hearing of school children is based on the School Health Law.

In FIG. 5, the hearing measuring device 1 is a hearing measuring device main body 2.
The operator operates the operation panel 3 to output a right or left inspection sound signal S1R or S1L to the right handset 4R or the left handset 4L, thereby causing the subject to hear the inspection sound and instructing the subject. On the other hand, the response indicator 6 is turned on and displayed by the response signal S2 obtained by instructing to operate the response switch 5 while the inspection sound is being heard.

The audiometry main body 2 has an inspection sound oscillation circuit 11 having a variable frequency oscillation circuit configuration, and an inspection sound frequency specifying signal S3 provided from an inspection sound specifying operation unit 12 provided on the operation panel 3 (FIG. 6) or The inspection sound oscillation signal S5 having a frequency corresponding to the selection sound designation signal S4 is sequentially passed through the interrupting circuit 13, the attenuating circuit 14, and the power amplifying circuit 15 to the handset switching circuit 16
Supply to.

The handset switching circuit 16 performs a right or left inspection by an ear-check switching signal S6R or S6L provided from the ear-check designating operation unit 17 which is a right-ear or left-ear designating switch 17R or 17L provided on the operation panel 3. Sound signal S1R or S1
L is sent to the right or left handset 4R or 4L.

Here, the inspection sound designation operation unit 12 sets the frequency of the inspection sound oscillation signal S5 to 500 [Hz], 1000 [Hz], 2000 [Hz], 4000 [H].
z] frequency designation operation switch 12A, 12
B, 12C, 12D, and frequency designation operation switch 1
When one of 2A to 12D is operated by the inspector, the inspection sound frequency designating signal S3 designating the corresponding frequency is sent to the inspection sound oscillating circuit 11 assuming that the normal frequency designating mode is designated.

In addition to this, the inspection sound designating operation unit 12 has first and second sorting designating operation switches 12E and 12F, and the sorting mode is designated when the examiner operates these sorting designating operation switches 12E or 12F. As 1000 [Hz] and 30
1st inspection sound of [dB] and 2nd of 4000 [Hz] and 25 [dB]
A selection sound designating signal S4 designating the generation of the testing sound is applied to the testing sound oscillation circuit 11 and the attenuation circuit 14.

The intermittent circuit 13 is supplied with an intermittent control signal S6 obtained from an intermittent designating operation switch 21 provided on the operation panel 3. In the case of this embodiment, the intermittent designation operation switch 21
Is a push-push type switch, and the examiner looks at the response indicator 6 (Fig. 6) and selects the intermittent operation switch 21.
By operating the right or left handset 4R or 4L, the first or second inspection sound is intermittently generated.

The intermittent circuit 13 sends the display drive signal S7 to the inspection sound display 2
The intermittent operation state is displayed by giving to the subject, and thereby the subject is made to be able to hear the first or second inspection sound, or is not able to be heard. The subject can visually confirm the fact.

Further, the attenuation circuit 14 outputs the selection sound designating signal S4 sent from the selection designating operation switches 12E and 12F and the hearing sound level designating signal sent from the hearing sound level manipulator 23 which is a variable resistor provided on the operation panel 3. S8 is given.

Here, the attenuation circuit 14 is designed to be able to specify the volume of the inspection sound in the range of, for example, 0 [dB] to 70 [dB] by the listening sound level specifying signal S8, and to operate the selection specifying operation switch 12E or 12F. 30 [dB] or 25 when
The volume can be set to [dB].

In FIG. 6, reference numerals 24 and 25 denote a power switch and its display lamp.

[Problems to be solved by the invention]

According to the conventional audiometric device shown in FIGS. 5 and 6, there is a problem that the examiner's time and effort required for the measurement work becomes great when the device is used for mass examination of school children, for example.

That is, when trying to operate the audiometric device 1 in the selection mode, the examiner needs to repeat the following complicated operation procedure for each subject. Here, the selection mode is used for the purpose of selecting a person having abnormal hearing from a large number of subjects by a simple inspection work.

As a first operation, a switch (right ear or left ear specifying operation switch 17R or 17L) corresponding to one ear to be measured at present in the ear test specifying operation unit 17 is operated, and as a second operation, an inspection sound is specified. One of the selection designation operation switches 12E or 12F is operated to designate the frequency and volume corresponding to the inspection sound to be measured (that is, the first inspection sound or the second inspection sound) from the operation unit 12, As the operation of 3, the intermittent operation switch 21 is turned on or off to perform an intermittent operation such that the inspection sound is heard or stopped for a predetermined listening time or rest time.

In this way, when the examiner selects and operates the operator on the operation panel 3 as necessary, the inspection sound oscillation circuit 11 causes the inspection sound oscillation circuit 11 to send 1000 [Hz] (or 4000 [Hz]) in response to the selection sound designating signal S4.
The test sound oscillation signal S5 is generated, and the intermittent circuit 13 supplies the test sound oscillation signal S5 to the attenuating circuit 14 for the listening time designated by the intermittent control signal S6 and lights the test sound indicator 22. Display (or stop the inspection sound oscillation signal S5 that has been supplied until now, and display the inspection sound display 2
2 is turned off), the attenuation circuit 14 attenuates the signal level of the inspection sound oscillation signal S5 to 30 [dB] (or 25 [dB]) by the selection sound specifying signal S4, and the reception sound switching circuit 16 detects the ear. The output of the power amplification circuit 15 is sent to the right handset 4R (or left handset 4L) as the right or left inspection sound signal S1R (or S1L) by the switching signal S6R or S6L.

As a result, the subject receives the first inspection sound of frequency 1000 [Hz] and volume 30 [dB] from the right handset 4R (or left handset 4L) through his right ear (or frequency 4000 [Hz] and volume 25 [dB]. ] The second inspection sound of [] can be heard by the left ear).

In this state, when the examinee turns on the response switch 5 when the first (or second) inspection sound is heard, the response signal S2 correspondingly causes the response signal S2 to be displayed on the response indicator 6 of the audiometry device body 2.
Thus, the examiner compares the lighting state of the response indicator 6 on the operation panel 3 with the lighting state of the inspection sound indicator 22 so that the right ear (or left ear) of the examinee is correct first (or first). It is possible to determine whether or not the pronunciation of the inspection sound in 2) is heard.

Then, when the examiner turns off the intermittent operation switch 21, the intermittent circuit 13 attenuates the test sound oscillation signal S5.
By turning off the inspection sound indicator 22 at the same time that the right inspection sound signal S1R (or the left inspection sound signal S1L), which has been supplied to the right handset 4R (or the left handset 4L), is not supplied. Then, the subject cannot hear the inspection sound.

In this state, when the examinee becomes unable to hear the inspection sound and turns off the response switch 5, the response indicator 6 is turned off. At this time, the examiner compares the response indicator 6 extinguishing operation with the inspection sound indicator 22 extinguishing operation to determine the hearing ability of the subject when the sound is muted.

Then, the examiner turns on the intermittent operation switch 21 again to re-execute the right handset 4 in the same manner as described above.
After the first (or second) inspection sound is generated from R (or the left handset 4L), the hearing ability when the inspection sound is generated is determined by comparing the lighting states of the response display 6 and the inspection sound display 22, and then, By turning off the intermittent designating operation switch 21 again, the inspection sound generated from the right handset 4R (or the left handset 4L) is silenced, and then the response display 6 and the inspection sound display 22 are compared and the hearing ability at the time of mute is compared. To judge.

In this manner, the examiner has left and right ear designated operation switches 17L or 17R in order to hear the first and second inspection sounds twice for each of the left and right ears of the subject, Two selection operation switches 12E or 12
It is necessary to accurately operate F and the intermittent operation switch 21 in a predetermined order and at a predetermined timing.
If the method of the response motion of the subject performed during that period is not correctly read, it is impossible to judge the hearing ability with high accuracy.

In particular, in order to allow the examinee to correctly hear the two inspection sounds, the examiner selects an appropriate operation switch from among a large number of operation switches on the operation panel 3 for each subject according to the progress of the hearing measurement work. In addition to the complicated work of setting the conditions for generating the inspection sound by selecting each one, the judgment result is written in the medical examination table in addition to the actual work, and the examinee is under the correct medical examination conditions. It is necessary to check whether or not the response switch 5 is being operated and to consider it, etc. in order to improve the determination accuracy.

As described above, in the conventional audiometry device, there is a considerable amount of work for generating a test sound satisfying a predetermined audiometry condition for one subject in a predetermined sequence, and therefore, for example, a group medical examination of school children, etc. When a large number of subjects are continuously examined as in the case of, the burden on the examiner becomes excessive,
Therefore, the accuracy of hearing determination may deteriorate due to the fatigue of the examiner.

The present invention has been made in consideration of the above points, and by reducing the work required to generate the inspection sound presented to the subject as much as possible, the burden on the examiner can be further reduced. It is intended to propose a measuring device.

[Means for solving problems]

In order to solve such a problem, in the present invention, the first and second inspection sounds are intermittently heard by the right or left ear of the subject, and the first and second inspection sounds are heard. In a hearing measurement device that determines whether or not hearing is possible based on the response motion of a subject who has heard, a right ear or a left ear to be inspected,
Automatic inspection sound presentation control means for selecting while sequentially combining the first or second inspection sound to be heard and interrupting the generation of the selected inspection sound a plurality of times at a predetermined timing (SP5 to SP20). 34 is provided.

Further, the automatic inspection sound presentation control means 34 causes the practice sound to be generated before generating the inspection sound (SP3).

Further, the automatic inspection sound presenting means 34 generates an announcement sound for informing the subject of the progress of the inspection sound automatic listening processing procedure.

Further, the automatic inspection sound presenting means 34 generates, as an announcement sound, a message at least informing the subject of the start of the inspection.

[Action]

In the automatic inspection mode, the automatic inspection sound presentation control means 34 performs automatic inspection sound listening processing in which the first or second inspection sound is heard while being interrupted a plurality of times with respect to the ear to be inspected. As a result, the examiner does not have to perform the work for setting the generation condition of the inspection sound to be heard by the subject, and the degree of concentration on the hearing determination work can be further increased.

By doing so, the practice sound and the announcement sound are generated prior to the execution of the inspection sound automatic listening process, so that the subject can hear the first inspection sound without confusion. As a result, it is possible to improve the accuracy of hearing determination.

〔Example〕

 An embodiment of the present invention will be described in detail with reference to the drawings.

In FIG. 1, reference numeral 31 denotes a hearing measuring device as a whole, and when the operator operates an operator provided on the operation panel unit 32, the right and the right sound generated in the inspection sound forming unit 33 according to the operation contents are displayed. Left inspection sound signals S11R and S1
1L can be supplied to the right and left handsets 34R and 34L.

Further, the inspection sound forming unit 33 is controlled by the automatic inspection sound presentation control signal S12 given from the automatic inspection sound presentation control unit 34 in the automatic inspection mode.

The test sound forming unit 33 sequentially receives the test sound signal S13 sent from the test sound generation circuit 41 including the variable frequency oscillator and the announcement sound generation circuit via the attenuation circuit 42, the interruption circuit 43, and the power amplification circuit 44, and then switches to the handset switching circuit. Supply to 45,
Depending on the switching operation, it is sent as the right inspection sound signal S11R or the left inspection sound signal S11L.

In the inspection sound generation circuit 41, the oscillation frequency of the inspection sound is controlled by the inspection sound frequency designation signal S15 obtained from the frequency control circuit 47. The frequency control circuit 47 includes a frequency designating switch 4 provided on the operation panel unit 32 (FIG. 2).
When 8 and 49 are operated, it receives the frequency designating signals S21 and S22 sent from the frequency designating switches 48 and 49, sends the corresponding test sound frequency designating signal S15 to the test sound generating circuit 41, and displays the frequency. The signals S23 and S24 are given on the operation panel section 32 to the frequency selection switches 50 and 51 provided with the frequency designating switches 48 and 49 so that the signals are lit and displayed, thereby notifying the examiner of the currently designated frequency. Has been done.

The attenuation circuit 42 is provided with an attenuation amount control circuit 55, and when the hearing sound level designating switch 56 arranged on the operation panel unit 32 (FIG. 2) is operated, the sounding level designating switch 56 sends it. The attenuation level designating signal S26 is supplied to the attenuation circuit 42 so as to supply the listening level designating signal S27 representing the designated attenuation level.

In the case of this embodiment, the attenuation control circuit 55 has two counters selected by the frequency designating signals S21 and S22, and operates either one of the frequency designating switches 48 or 49, and at the same time, hears the sound level designating switch 56. By repeatedly pressing, the contents of the corresponding counter are counted by a predetermined amount of attenuation each time the listening level designating switch 56 is pressed, and thus, every frequency 1000 [Hz] or 4000 [Hz]. The listening level designating signal S27 representing the set volume can be transmitted.

At the same time, the attenuation control circuit 55 supplies the sound level display signals S29 and S30 for displaying the set volume to the sound level indicators 57 and 58 provided on the operation panel section 32 (FIG. 2). As a result, the currently set listening sound levels of 1000 [Hz] and 4000 [Hz] can be displayed in characters.

An intermittent control circuit 61 is provided in the intermittent circuit 43, and an intermittent control signal for performing intermittent control of the intermittent circuit 43 by an intermittent designation signal S31 provided from an intermittent designation switch 62 provided in the operation panel unit 32 (FIG. 2). s32 can be supplied.

In the case of this embodiment, the intermittent designation switch 62 is a push switch.
It is composed of a push-type switch, whereby the intermittent control circuit 61 has an on-operation state in which the inspection sound signal S13 can be sent from the intermittent circuit 43 and an off-operation state in which it cannot be sent when the examiner repeatedly presses the intermittent designating switch 62. The intermittent control signal S32 for alternately controlling is supplied to the intermittent circuit 43, and the intermittent control signal S32 is supplied to the operation panel unit 3.
By supplying it to the inspection sound display device 63 which is provided with the intermittent switch 62, the display sound is driven.

A test ear switching control circuit 65 is provided in the handset switching circuit 45, and a right ear designating signal S35R and left obtained from right ear and left ear designating switches 66R and 66L provided in the operation panel unit 32 (FIG. 2). Based on the ear designating signal S35L, the earpiece switching signal S67 for switching the handset switching circuit 45 to a state in which the right inspection sound signal S11R or the left inspection signal S11L can be transmitted can be supplied.

In addition to this, the inspection ear switching control circuit 65 drives the ear detection display signals S68R or S68L indicating the switching state to display the ear detection indicators 67R and 67L provided with the right and left ear designation switches 66R and 66L. It is done like this.

Thus, the right test sound and the left test sound based on the right and left test sound signals S11R and S11L sent from the handset switching circuit 45 of the test sound forming unit 33 are generated by the right and left receivers 34R and 34L, respectively. It is possible to obtain a state that the examiner can hear.

When the subject turns on or off the response switch 70 when he or she hears the sound or the sound of the inspection sound, a response signal S70 indicating the response state is displayed on the operation panel unit 32 (FIG. 2). It is supplied to the response display unit 71 that is installed together with the device 63 to display it on or off,
Thus, the examiner turns on or off the inspection sound indicator 63,
By reading the switching timing, the lighting or extinguishing state of the response indicator 71, and the switching timing, it is possible to determine whether or not the hearing of the subject is possible.

In FIG. 2, reference numeral 72 is a power source display lamp.

In the above configuration, the hearing measuring device 31 performs the hearing test by using the test sound of the frequency 1000 [Hz] or 4000 [Hz] in the manual test mode in the same manner as described above with reference to FIGS. 5 and 6. You can
For the inspection sound of [Hz] or 4000 [Hz], by operating the frequency designating switch 48 and the hearing sound level designating switch 56, or the frequency designating switch 49 and the hearing sound level designating switch 56, respectively, the hearing sound level indicator 57 or 58 You can reset the listening level while watching.

The audiometric device 31 shown in FIGS. 1 and 2 performs the selective audiometric measurement in the automatic inspection mode by the automatic inspection sound presentation control unit 34 having the following configuration in addition to the configuration of the manual inspection mode described above. obtain.

The automatic inspection sound presentation control unit 34 controls the operation panel unit 32 (second
(Fig.) Automatic inspection mode designation switch 8 provided above
When 2 is operated, as shown in FIG. 3, an automatic inspection mode designating signal S81 obtained at its output end is applied to a set input end S of an automatic inspection mode designating circuit 83 having a flip-flop circuit configuration.

The Q output of the automatic inspection mode designating circuit 83 is given as an open control signal S83 to the AND gate circuit 85 for the clock signal S82 of the clock signal generating circuit 84, whereby the automatic inspection mode depending on the set operation of the automatic inspection mode designating circuit 83. When the designated state is reached, the clock signal S82 is supplied to the program counter circuit 86 as the program step signal S84.

Thus, the program counter circuit 86 sequentially reads the program signals stored in the program signal generating circuit 87 having a read-only memory (ROM) by the program designating signal S85 obtained at the output terminal thereof to automatically control the sound inspection control signal S12. As automatic inspection sound presentation control unit 3
4 to the inspection sound forming unit 33.

The automatic inspection sound presentation control signal S12 includes an automatic inspection mode display signal S90 which is turned on while the program counter circuit 86 is counting by the automatic inspection mode designating circuit 83 performing a set operation. By supplying the signal S90 to the automatic inspection mode indicator 90 of the operation panel unit 32 (FIG. 2), this is turned on, and thus it is possible for the examiner to visually recognize that the hearing measuring device 31 is operating in the automatic inspection mode. Let us know.

Further, the automatic inspection sound presentation control signal S12 is an automatic inspection sound frequency specifying signal S91 for specifying the frequency of the inspection sound, an automatic inspection sound attenuation amount specifying signal S92 for specifying the volume of the inspection sound, and a sounding time and a pause time of the inspection sound. The automatic inspection sound interruption time signal S93 that specifies the sound, the automatic inspection sound ear-checking signal S94 that specifies the receiver that generates the inspection sound, and the announcement specifying signal S95 that controls the generation of the announcement sound.

These designation signals S91, S92, S93, S94, and S95 indicate the frequency of the inspection sound to be heard by the subject, the volume, the listening time (that is, the automatic inspection sound presentation time), and the pause time. , Is programmed in the program signal generation circuit 87 as a combination of the ear type and the announcement type, and by sequentially reading the preset programmed combination by the program designation signal S85 of the program counter circuit 86, The frequency control circuit 47, the attenuation amount control circuit 55, the intermittent control circuit 61, the inspection ear switching control unit 65 and the inspection sound of the inspection sound forming unit 33 are executed so as to execute the inspection sound automatic listening processing program as shown in FIG. It is supplied to the generation circuit 41.

In the case of this embodiment, the content of the automatic inspection sound presentation control signal S12 is set based on the setting condition signal S96 set in the inspection sound condition setting circuit 91 (FIG. 3).

The inspection sound generation time setter 91A and the inspection sound pause time setter 91B set the interruption time of the inspection sound to be heard by the subject.

The practice sound insertion selection setting device 91C has a predetermined frequency (for example, 1000 [Hz] and information indicating a volume (for example, 40 [dB]) and an intermittent time of the practice sound (before the test sound is heard by the subject). For example, the information indicating the occurrence time 3 [sec] and the rest time 2 [sec]) and the information indicating whether or not the practice sound is inserted are set.

The listening frequency setting device 91D causes the subject to hear the test sound intermittently repeatedly, and accordingly, the listening frequency (for example, 2).
Information) is set.

The school-child screening condition setting device 91E sets the conditions for the test sound when the school-child screening is carried out.

For the reason, the group medical examination for school children is 1000 according to the provisions of the School Health Law.
First inspection sound of [Hz] and 30 [dB], and 4000 [Hz] and 25
It is decided to use the second inspection sound of [dB], and accordingly, the condition of the inspection sound and the condition of whether or not to use the same are set in the schoolchild screening condition setting device 91E. It

The hiring examination condition setting device 91F sets the conditions of the examination sound used when conducting the group examination of workers at the time of hiring.

The condition of this inspection sound is the inspection condition applied at the time of collective inspection of workers at the time of employment based on the provisions of the Occupational Health and Safety Act. The first inspection sound of 1000 [Hz] and 30 [dB] and 4000 [H
Information of the second inspection sound of z] and 30 [dB] and information indicating whether or not to apply the information are set.

The screening condition setting device 91G for 35 years old and over 40 years old can set the screening condition to be applied when the group screening for the workers over 35 years old and 40 years old is carried out based on the Occupational Health and Safety Law.
z] and 30 [dB] first inspection sound and 4000 [Hz] and 40 [d]
The information of the second inspection sound [B] and the information indicating whether or not to apply the information are set.

In the above configuration, the automatic inspection sound presentation control unit 34 causes the program counter circuit 86 to output a clock signal by causing the automatic inspection mode specifying circuit 83 to perform a set operation when the automatic inspection mode specifying switch 82 of the operation panel unit 32 is turned on. Based on the counting operation by the clock signal S82 of the generating circuit 84, the program signal generating circuit 87 outputs the inspection sound automatic listening processing program shown in FIG. Execution starts from processing step SP0.

First, the program signal generation circuit 87 turns on the automatic inspection mode display signal S90 in step SP1 to turn on the automatic inspection mode display signal S90.
When 0 is lit and displayed, it indicates that the audiometric device 31 has entered the automatic inspection mode as a whole.

Subsequently, the program signal generating circuit 87 moves to step SP2 and checks the announcement designating signal S95 for the inspection main generating circuit 41.
By supplying the first announcement sound to the announcement sound generation circuit of the IC circuit configuration provided in the inspection sound generation circuit 41, whereby the right and left handsets 34R and 34L receive predetermined messages. Is generated to notify the subject that the hearing measurement is to be started.

As the message for this first announcement, use the phrase "I will start the inspection. There is a beeping sound (the inspection sound is generated), so press and hold the button while you hear the sound.

Subsequently, the program signal generation circuit 87 moves to step SP3, and the automatic inspection sound frequency designation signal S91 generated based on the setting condition signal S96 inputted from the practice sound insertion selection setting device 91C is set to 1000 [Hz]. The inspection sound signal S13 is generated in the variable frequency oscillation circuit of the inspection sound generation circuit 41.

Further, the program signal generation circuit 87 sets the attenuation circuit 42 to the attenuation amount of 40 [dB] by the automatic inspection sound attenuation amount designation signal S92.

Further, the program signal generation circuit 87 turns on the intermittent circuit 43 for 3 seconds by the automatic inspection sound intermittent time setting signal S93.

Further, the program signal generating circuit 87 controls the handset switching circuit 45 to switch to the state in which the right inspection sound signal S11R is generated by the automatic inspection sound ear-specifying signal S94.

Thus, the inspection sound forming section 33 is connected to the program signal generating circuit 8
By the automatic inspection sound presentation control signal S12 sent to 7, the practice sound of 1000 [Hz] and 40 [dB] is applied to the right ear 3 times.
Sound for [sec].

When the sounding time of 3 [sec] has elapsed, the program signal generation circuit 87 moves to step SP4 and outputs the practice sound for 2 [sec] based on the setting condition signal S96 input from the practice sound insertion selection setting device 91C. After pausing, step SP
From 5, the operation of generating the first inspection sound is started.

Thus, the subject can listen to the practice sound before listening to the first inspection sound, thereby effectively avoiding the confusion of listening to the first inspection sound.

In the case of this embodiment, the setting condition signal S96 is input to the program signal generating circuit 87 from the schoolchild screening condition setting device 91E, and accordingly, the program signal generating circuit 87 causes the automatic inspection sound frequency designating signal S91. By
Designate 1000 [Hz] and specify automatic inspection sound attenuation signal S92
Specified 30 [dB], the automatic inspection sound intermittent signal S
The sound generation time of 3 [sec] is specified by 93, and the right ear is specified as the test ear by the automatic inspection sound ear-specifying signal S94.

Thus, the inspection sound generating circuit 41, the attenuation circuit 42, and the interrupting circuit 4 are generated by the designation signals S91, S92, S93, and S94.
3. By setting the handset switching circuit 45, respectively, the subject receives 1000 [Hz] and 30 [d] from the right handset 34R.
The first inspection sound of B] can be heard for 3 [sec].

At this time, when the subject who can hear the first inspection sound turns on the response switch 70, the response indicator 71 lights up in accordance with the timing of the ON operation.
The lighting state of the response indicator 71 of the inspector indicates the inspection sound indicator 6
By determining the deviation from the timing at which 3 is turned on, it is possible to determine whether or not the hearing ability at the time of producing the first inspection sound is acceptable.

When the sounding time of 3 [sec] elapses, the program signal generating circuit 87 moves to step SP6 and turns off the interrupting circuit 43 based on the automatic inspection sound interrupting time designating signal S93. The first inspection sound that has been generated is muted.

At this time, when the subject no longer hears the first inspection sound, the response switch 71 is turned off accordingly and the response indicator 71 is turned off. In this way, the response indicator 71
The time delay between the timing of turning off the light and the timing of turning off the inspection sound indicator 63 due to the disconnection circuit 43 being turned off represents the hearing ability of the subject when the sound is muted.

Therefore, the examiner can determine the hearing ability of the subject when the sound is muted by comparing the turn-off operation of the response indicator 71 with the turn-off operation of the inspection sound indicator 63.

In this way, the hearing test for the first test sound of the first time is completed for the right ear by the steps SP5 and SP6, and the program signal generating circuit 87 continues the operations of the steps SP5 and SP6 in the following steps SP7 and SP8. By repeating, the second hearing operation for the first inspection sound is executed to repeat similar hearing measurement.

In this way, steps SP5, SP6, SP7, SP
When the second hearing measurement of the first test sound is completed in step 8, the program signal generating circuit 87 continues the step S
In P9, SP10, SP11, and SP12, two hearing tests are performed on the second test sound, that is, the test sound of 4000 [Hz] and 40 [dB].

Here, at the timing of step SP9 and step S11, the program signal generation circuit 87 causes the automatic inspection sound frequency designation signal S91 and the automatic inspection sound attenuation amount designation signal S9.
2 by setting the oscillation frequency of the inspection sound generation circuit 41 to 4000
Set to [Hz] and set the attenuation amount of the attenuation circuit 42 to 40
Set to [dB].

In this way, the examiner determines the steps SP9 to SP
Whether or not hearing is possible can be determined by comparing the timing of turning on or off the response indicator 71 generated during 12 with the turning on or off of the inspection sound indicator 63.

Subsequently, the program signal generation circuit 87 switches step SP5, except that the ear to be inspected is switched to the left ear.
Program control processing similar to SP6, SP7, and SP8 is executed in steps SP13, SP14, SP15, and SP16, whereby the examiner can determine the hearing ability of the left ear by using the first inspection sound.

Subsequently, the program signal generating circuit 87 outputs the above-mentioned steps SP9, S except that the ear to be measured is the left ear.
The measurement process similar to that of P10, SP11, and SP12 is executed in steps SP17, SP18, SP19, and SP20, whereby the examiner can determine the hearing ability of the left ear by using the second examination sound.

Thus, all the hearing measurement processing for the subject is completed, and the program signal generating circuit 87 continues the step SP2.
In 1, the generation of the second announcement sound is designated by supplying the announcement designating signal S95 to the examination sound generation circuit 41, whereby the subject is "finished the examination".
After notifying that all the hearing measurement has been completed by making a second announcement, the automatic inspection mode display 90 is turned off by turning off the automatic inspection mode display signal S90 in the next step SP22. The end of the automatic inspection mode is notified to the examiner, and the automatic inspection mode designation circuit 83 is reset by applying the automatic inspection mode end signal S97 to the reset input terminal R of the automatic inspection mode designation circuit 83 (FIG. 3). .

At this time, the AND gate circuit 85 is controlled by the open control signal S83 to a state in which the passage of the clock signal S82 is blocked, and thus the program signal generation circuit 87, and thus the automatic inspection sound presentation control unit 34 as a whole in step SP23. The inspection sound automatic listening processing program ends.

According to the above configuration, when the examiner operates the automatic inspection mode designating switch 82, the program signal generation circuit 87 of the automatic inspection sound presentation control unit 34 automatically executes the inspection sound automatic listening processing program (FIG. 4). By executing the above, the ears to be inspected can be sequentially selected for the subject at a predetermined timing, and the first inspection sound or the second inspection sound can be generated or paused while interrupting for a predetermined interruption time.

Accordingly, the examiner determines whether or not the hearing ability of the inspected ear is appropriate, mainly by paying attention to the timing and the situation when the subject operates the response switch 70 according to the progress of the inspection sound automatic listening processing program. You can concentrate on your work.

Thus, since the examiner does not have to successively set the measurement conditions for generating the inspection sound, the examiner's measurement work can be significantly simplified compared to the conventional case, resulting in a burden on the examiner. As a result, the determination result with high accuracy can be obtained.

In addition to this, when the program signal generation circuit 87 starts the inspection sound automatic listening processing program, the practice sound is detected at the timing (that is, step SP3 in FIG. 4) before the start of the first determination processing. By making the sound heard by the person, the subject can hear the practice sound similar to the first test sound heard at the time of measurement as a practice prior to the true test, so that the practice of the operation of the response switch 71 is practiced. As a result, the response switch 71 can be operated without confusion from the first inspection.

As a result, it is possible to realize an audiometric measurement result with higher determination accuracy as a whole.

In addition, in the above-mentioned embodiment, the hearing measuring device 31 is described as an embodiment in the case of being applied to the group medical examination of school children. When applied to the hearing screening, by setting the setting condition signal S96 to the program signal generating circuit 87 from the corresponding employment screening condition setting device 91F and the screening condition setting device 91G of 35 years old and 40 years old or more, FIG. The measurement process can be executed in the same manner as in the case 1) so that a highly accurate hearing measurement result can be obtained.

Further, in the above-described embodiment, as an announcement to the subject, a message for notifying the subject of the start and end of the examination is generated at steps SP2 and SP21 at the start and end of the procedure for automatically listening to the examination sound. Although the case has been described above, the announcement is not limited to this, and the announcement may be only the first announcement, or a new announcement may be generated during the inspection sound automatic listening processing procedure.

For example, between the steps SP12 and SP13, a message such as "The examination of the right ear is finished, then the examination of the left ear is started" is generated as the third announcement, and the examination progress is given to the subject. If the notification is given, it is possible to further reduce the confusion of the examinee, and the measurement accuracy can be improved accordingly.

Further, in the above-described embodiment, two kinds of inspection sounds, that is, the first and second inspection sounds are heard as the inspection sounds, but the kinds of the inspection sounds are not limited to this, and three or more kinds can be heard. However, the same effect as the above case can be obtained.

Further, in the above-described embodiment, the announcement sound is generated in the announcement sound generation circuit of the IC circuit configuration provided in the inspection sound generation circuit 41. However, the means for generating the announcement sound is not limited to this, and the inspection sound is generated. Generation circuit 41
Even if an audio recording device such as a tape recorder provided separately from is provided on the input side or the output side of the attenuation circuit 42, the same effect as the above case can be obtained.

〔The invention's effect〕

As described above, according to the present invention, the setting of the inspection sound to be heard by the subject is automatically switched, so that the burden of the examiner on the measurement work can be further reduced, whereby the measurement can be further performed. A highly accurate audiometry can be realized.

By doing so, it is possible to generate a practice sound prior to the generation of the inspection sound and announce the progress of the inspection so that the subject can listen to the inspection sound calmly. Therefore, it is possible to obtain a hearing measuring device having a higher accuracy of hearing measurement.

[Brief description of drawings]

FIG. 1 is a block diagram showing the overall configuration of an audiometric device according to the present invention, FIG. 2 is a front view showing the detailed configuration of the operation panel section 32 of FIG. 1, and FIG. 3 is the automatic inspection sound presentation of FIG. FIG. 4 is a block diagram showing a detailed configuration of the control unit 34, FIG. 4 is a flow chart showing an inspection sound automatic listening processing program in the program signal generating circuit 87 of FIG. 3, and FIG. 5 is a configuration of a conventional hearing measuring device. A block diagram and FIG. 6 are front views showing the structure of the operation panel section 3. 31 ... hearing measuring device, 32 ... operation panel section, 33 ...
... inspection sound forming unit, 34 ... automatic inspection sound presentation control unit, 86
...... Program counter circuit, 87 …… Program signal generation circuit, 91 …… Inspection sound condition setting circuit.

Claims (2)

[Claims] 1. A plurality of inspection sounds are intermittently heard by the right or left ear of the subject, and the hearing ability is determined based on the response operation of the subject who listens to the plurality of inspection sounds. In the audiometry device for determining the propriety, when the automatic inspection mode is started, the following will be the first step of announcing a message notifying the subject that the audiometry will be started, a predetermined frequency and a predetermined frequency. A second step of generating a practice sound having a volume for a predetermined time, and a first inspection sound having a first frequency and a first volume for one of the right ear and the left ear. A third step that occurs during the first listening time, and a second test sound that has a second frequency and a second volume for the one ear during the second listening time. Fourth
And a fifth step of generating a third inspection sound having a third frequency and a third volume for the other of the right and left ears during a third listening time. , Automatic inspection sound presentation for sequentially performing processing with respect to the other ear with a sixth inspection sound having a fourth frequency and a fourth volume during a fourth listening time An audiometric device comprising control means. 2. The automatic inspection sound presentation control means is the second
By executing the step of muting for a predetermined time, respectively, when the execution of the step, the third step, the fourth step, the fifth step, and the sixth step is completed and the subsequent processing is executed. The hearing measuring device according to claim 1, wherein the examiner can perform a processing operation in response to a response from the examinee.