JP3604579B2 - Hearing aid system - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hearing aid system for a hearing-impaired person, and more particularly to a system for hearing sounds such as emergency broadcasts.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, broadcast systems for emergency broadcasts and commercial broadcasts are provided at various places outdoors and indoors. In this broadcast system, as shown in FIG. 10, a broadcast line 1001 of an emergency broadcast or business broadcast facility is connected to a speaker 1002, and an output of a power amplifier of the broadcast facility is sent to the speaker 1002 through the broadcast line 1001, An emergency broadcast or business broadcast is output as audio from the speaker 1002.
[0003]
On the other hand, a hearing-impaired person supplements his / her hearing with a hearing aid. However, there are cases where the sound of the emergency broadcast or business broadcast cannot be heard outdoors or indoors where the space is wide.
[0004]
For such a hearing-impaired person, as shown in FIG. 10, a method of wirelessly transmitting information from a wireless transmitter 1005 to a hearing-impaired person receiver (hearing aid) 1006 is considered.
In this case, the hearing aid wireless transmitter 1005 is connected to the transmitter dedicated broadcast line 1003 and the transmitter dedicated power line 1004, and the hearing aid wireless transmitter 1005 itself is configured to transmit a signal input from the transmitter dedicated broadcast line 1003. A level adjustment circuit for adjusting the level, a transmission circuit for wirelessly transmitting the level-adjusted signal to the hearing aid 1006, and a transmitter power supply for allocating power supplied from the power line 1004 dedicated to the transmitter to each part of the wireless transmitter for hearing aid 1005 With the circuit.
[0005]
The hearing aid wireless transmitter 1005 adjusts the level of the broadcast signal transmitted through the transmitter dedicated broadcast line 1003 by a level adjustment circuit, and then wirelessly transmits the broadcast signal from the transmission circuit. Hearing aid 1006 receives this signal, demodulates it, and outputs sound. Therefore, the hearing-impaired can listen to the broadcast sent by the transmitter dedicated broadcast line 1003.
[0006]
[Problems to be solved by the invention]
However, in such a system configuration, wiring work for the transmitter dedicated broadcast line 1003 and the transmitter dedicated power supply line 1004 is troublesome and costly, so that emergency broadcasts and business broadcasts for the hearing impaired are not performed. It is the current situation.
[0007]
The present invention has been made to solve such a conventional problem, and has as its object to provide a hearing aid system that transmits emergency information and the like to a hearing-impaired person, and requires less wiring and construction.
[0008]
[Means for Solving the Problems]
Therefore, in the hearing aid system of the present invention, audio transmitted on a broadcast line of an emergency broadcast or business broadcast is input to a wireless transmitter, and the audio is transmitted from the wireless transmitter to a hearing aid receiver held by a hearing-impaired person. Thus, the hearing impaired can listen to the sound transmitted on the broadcast line.
[0009]
Therefore, the burden of wiring and construction is reduced, and reliable transmission of information to a hearing-impaired person becomes possible.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1 of the present invention is characterized in that audio transmitted on a broadcast line of an emergency broadcast or business broadcast is input to a wireless transmitter, and the audio is transmitted from the wireless transmitter to a hearing aid receiver held by a hearing-impaired person. Is transmitted so that the hearing impaired can listen to the sound transmitted on the broadcast line, reducing the burden of wiring and construction, and transmitting reliable information to the hearing impaired Is made possible by voice.
[0011]
According to a second aspect of the present invention, the wireless transmitter is electromagnetically coupled to a speaker that emits the sound of the broadcast line, and the sound of the broadcast line is input to the wireless transmitter via the electromagnetic coupling. This eliminates the need for wiring from a broadcast line to a transmitter, and enables reliable transmission of information to a hearing-impaired person by voice.
[0012]
According to a third aspect of the present invention, a microphone for collecting broadcast sound is provided in the wireless transmitter, and the sound of a speaker that emits the sound of the broadcast line is collected by the microphone and input to the wireless transmitter. This eliminates the need for wiring from a broadcast line to a transmitter, and enables reliable transmission of information to a hearing-impaired person by voice.
[0013]
According to a fourth aspect of the present invention, a rectifier circuit is provided in a wireless transmitter, and an audio signal input from a broadcast line is converted into a DC signal by the rectifier circuit and used as a power source of the wireless transmitter. This eliminates the need to externally supply power for the wireless transmitter.
[0014]
According to a fifth aspect of the present invention, in the wireless transmitter, audio information storage means for storing audio of a broadcast line, a backup power supply, and a power supply when the DC power supply output from the rectifier circuit exceeds a certain voltage. Power supply switching means for switching from the backup power supply to the DC power supply of the rectifier circuit is provided, audio input when the backup power supply is used as the supply power is stored in the audio information storage means, and the supply power supply is switched to the DC power supply of the rectifier circuit. Thereafter, the voices stored in the voice information storage means are sequentially transmitted, so that there is no need to externally supply the power for the wireless transmitter, and it is possible to prevent the beginning of the talk from being cut off.
[0015]
According to a sixth aspect of the present invention, a wireless transmitter is provided with audio content determining means for determining the audio content of a broadcast line and audio data converting means for converting the audio into data according to the content. The receiver is provided with data-to-speech conversion means for converting this data into sound, and the converted data is transmitted from the wireless transmitter to the hearing aid receiver.Since the data is only transmitted. , Efficient transmission can be performed.
[0016]
According to a seventh aspect of the present invention, a microphone for collecting ambient noise is provided in the wireless transmitter, and the sound collected by the microphone for collecting broadcast sound is changed according to the ambient noise detected by the microphone for collecting ambient noise. The level and frequency characteristics are adjusted, and information can be transmitted to a hearing-impaired person by voice without being affected by ambient noise.
[0017]
The invention according to claim 8 is characterized in that the wireless transmitter is provided with an emergency broadcast detection means for detecting an emergency broadcast on a broadcast line and an emergency signal generation means for converting the sound of the emergency broadcast into corresponding data, and The emergency signal discriminating means for identifying the sound of the emergency broadcast from the data, the emergency sound generating means for generating the sound of the identified emergency broadcast, and the level and frequency characteristics of the sound are optimized for the listener. And an audio amplification / frequency adjusting means for detecting the presence or absence of an emergency broadcast and transmitting the data, whereby emergency information can be easily and efficiently transmitted to a hearing-impaired person.
[0018]
According to a ninth aspect of the present invention, the wireless transmitter is provided with an emergency broadcast detecting means for detecting an emergency broadcast on a broadcast line, and an emergency signal generating means for converting the content of the emergency broadcast into corresponding data. The device is provided with an emergency signal discriminating means for identifying the content of the emergency broadcast from the data and a display means for visually displaying the content of the identified emergency broadcast. Can be transmitted by visual information.
[0019]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 9.
[0020]
(1st Embodiment)
As shown in FIG. 1, the hearing aid system according to the first embodiment includes a broadcast line 101 through which an audio signal of an emergency broadcast or a business broadcast is transmitted from a broadcast facility, and a speaker 102 that converts the audio signal into audio and outputs the audio. , A wireless transmitter 103 for a hearing aid that wirelessly transmits an audio signal transmitted through a broadcast line 101, and a receiver for a hearing impaired person (a hearing aid) that receives a wireless signal transmitted from the wireless transmitter 103 for a hearing aid and reproduces sound. ) 106.
[0021]
The hearing aid wireless transmitter 103 includes a level adjustment circuit 104 that adjusts the level of an audio signal input from the broadcast line 101 and a transmission circuit 105 that wirelessly transmits the audio signal whose level has been adjusted.
[0022]
In this system, an audio signal transmitted from a power amplifier of a broadcast facility such as an emergency broadcast is input to a speaker 102 via a broadcast line 101 and output as audio from the speaker 102, and the audio signal is transmitted wirelessly through the broadcast line 101. The signal is input to the transmitter 203, the level is adjusted by the level adjustment circuit 104, and the signal is modulated by the transmission circuit 105 and transmitted.
[0023]
This wireless signal is received by the hearing aid 106, demodulated and output as sound. Therefore, a hearing-impaired person can surely listen to an emergency broadcast or a business broadcast.
[0024]
In this system, the wiring of the wireless transmitter for hearing aid 103 is branched from the broadcast line 101, so that the wiring is small and the burden of wiring is small.
[0025]
(Second embodiment)
In the hearing aid system according to the second embodiment, as shown in FIG. 2, the hearing aid wireless transmitter 203 includes an electromagnetic coupling circuit 204, and the electromagnetic coupling circuit 204 takes the magnetic force of the speaker 202, Acquire an audio signal such as an emergency broadcast. Other configurations are the same as those of the first embodiment.
[0026]
In this system, a hearing aid wireless transmitter 203 is arranged close to one of speakers 202 connected to a broadcast line 201 for an emergency broadcast or the like.
[0027]
The audio signal transmitted from the broadcasting equipment is input to the speaker 202 through the broadcast line 201, and is output from the speaker 202 as audio. At this time, the line of magnetic force of the speaker 202 is detected by the electromagnetic coupling circuit 204 of the wireless transmitter 203 for a hearing aid, and an audio signal as a result of the detection is output to the level adjustment circuit 204.
[0028]
The subsequent operation is the same as that of the first embodiment. The level adjustment of the audio signal is performed by the level adjustment circuit 205, and the transmission circuit 206 modulates the radio signal into a radio signal and transmits the radio signal. The hearing aid 106 that has received this demodulates the received signal and outputs sound. Therefore, a hearing-impaired person can surely listen to an emergency broadcast or a business broadcast.
[0029]
This system eliminates the need for wiring from the broadcast line to the hearing aid wireless transmitter.
[0030]
(Third embodiment)
As shown in FIG. 3, the hearing aid system of the third embodiment includes a microphone 304 that collects emergency broadcast and business broadcast sounds emitted from the speaker 302 and transmits the collected audio to the hearing aid wireless transmitter 303. Other configurations are the same as those of the first embodiment (FIG. 1).
[0031]
In this system, when an audio signal transmitted from a broadcasting facility is transmitted to a speaker 302 via a broadcast line 301 and is output from the speaker 302, a microphone 304 collects the audio and outputs the audio signal. The signal is output to the level adjustment circuit 305 of the hearing aid wireless transmitter 303.
[0032]
Subsequent operations are the same as in the first embodiment. The level adjustment of the audio signal is performed by the level adjustment circuit 305, and the audio signal is modulated by the transmission circuit 306 and transmitted. The hearing aid 307 that has received this demodulates the received signal and outputs sound. Therefore, a hearing-impaired person can surely listen to an emergency broadcast or a business broadcast.
[0033]
This system does not require wiring from the broadcast line to the hearing aid wireless transmitter.
[0034]
(Fourth embodiment)
In the hearing aid system of the fourth embodiment, the power of the wireless transmitter for hearing aid is obtained from the audio signal transmitted through the broadcast line.
[0035]
In this system, as shown in FIG. 4, a wireless hearing aid transmitter 403 includes a rectifier circuit 406 for rectifying an audio signal flowing through a broadcast line 401, and a transmitter power supply circuit 407 for using the rectified signal as a power supply. It has. Other configurations are the same as those of the first embodiment (FIG. 1).
[0036]
In this system, an audio signal transmitted from a broadcast facility is input to a speaker 402 via a broadcast line 401 and also to a level adjustment circuit 404 and a rectification circuit 406 of a wireless transmitter 403. The speaker 402 converts a sound signal into sound and outputs the sound.
[0037]
The rectification circuit 406 rectifies the input audio signal, and the transmitter power supply circuit 407 supplies the rectified DC signal to the level adjustment circuit 404 and the transmission circuit 405 as a power supply. The level adjustment circuit 404 adjusts the level of the input audio signal, and the transmission circuit 405 modulates the level-adjusted signal into a radio signal and transmits the signal. The hearing aid 408 that has received this demodulates the received signal and outputs sound. Therefore, a hearing-impaired person can surely listen to an emergency broadcast or a business broadcast.
[0038]
In this system, there is no need to externally supply power to the hearing aid wireless transmitter 403.
[0039]
(Fifth embodiment)
In the hearing aid system according to the fifth embodiment, the audio signal of the broadcast is accumulated until the power obtained by rectifying the audio signal of the broadcast line is stabilized, and transmission is started after the power is stabilized.
[0040]
In this system, as shown in FIG. 5, the hearing aid wireless transmitter 503 can supply stable power from a voice information storage circuit 505 for storing voice information of an emergency broadcast or a business broadcast, and a transmitter power supply circuit 508. A power supply stability determination circuit 509 for determining whether or not a power supply from the transmitter power supply circuit 508 or the backup power supply 511 is supplied to the level adjustment circuit 504 and the audio information storage circuit 505, a backup power supply 511 including a battery, a large capacity capacitor, and the like. And a power supply switching circuit 512 for switching and supplying. Other configurations are the same as those of the fourth embodiment (FIG. 4).
[0041]
In this system, an audio signal transmitted from a broadcast facility of an emergency broadcast or a commercial broadcast is input to a speaker 502 via a broadcast line 501, and to a level adjustment circuit 504 and a rectification circuit 507 of a wireless transmitter 503 for a hearing aid. The speaker 502 converts the audio signal into audio and outputs the audio, and the rectifier circuit 507 rectifies the input audio signal and outputs the rectified audio signal to the transmitter power supply circuit 508.
[0042]
On the other hand, the power supply stability determination circuit 509 determines whether or not stable power supply from the transmitter power supply circuit 508 to the transmission circuit 506 is possible, and transmits the determination result to the power supply switching circuit 512. The power supply switching circuit 512 supplies the backup power supply 511 to the level adjustment circuit 504 and the audio information storage circuit 505 when the determination result of the power supply stability determination circuit 509 is negative. Therefore, during a period in which no audio signal is input, power is supplied from the backup power supply 511 to the level adjustment circuit 504 and the audio information storage circuit 505 via the power supply switching circuit 512.
[0043]
When an audio signal from the broadcast line 501 is input to the level adjustment circuit 504, the level adjustment circuit 504 adjusts the level of the audio signal, and the audio information storage circuit 505 stores the audio signal. Therefore, the audio signal is stored in the audio information storage circuit 505 simultaneously with the input.
[0044]
When the input of the audio signal continues for a certain period of time and a sufficient voltage is obtained in the transmitter power supply circuit 508 to operate the transmitter circuit 506, the transmitter power supply circuit 508 starts supplying power to the transmitter circuit 506. At this time, the power supply stability determination circuit 509 informs the power supply switching circuit 512 to that effect, and the power supply switching circuit 512 supplies power to the level adjustment circuit 504 and the audio information storage circuit 505 from the backup power supply 511 to the transmitter power supply circuit 508. Switch to the power supply.
[0045]
When the transmission circuit 506 starts operating, the audio signals stored in the audio information storage circuit 505 are sequentially output to the transmission circuit 506 and transmitted. Accordingly, the hearing aid wireless transmitter 503 can transmit the audio signal input from the broadcast line 501 without leaking. When the hearing aid 510 receives the transmitted audio signal, the hearing impaired person can surely listen to an emergency broadcast or a business broadcast.
[0046]
Thus, in this system, the beginning of the speech can be prevented.
[0047]
(Sixth embodiment)
In the hearing aid system of the sixth embodiment, audio information is converted into simple data and transmitted.
[0048]
In this system, as shown in FIG. 6, a wireless transmitter for a hearing aid 603 includes an audio data conversion circuit 605 for converting audio information into simple data such as AAA, ABA, ACC or the like corresponding to the content. A hearing aid 607 receives a data transmitted from the hearing aid wireless transmitter 603, a data-speech conversion circuit 609 for converting the received data into a voice, amplifies the voice, and And an audio amplification / frequency adjustment circuit 610 that adjusts the frequency characteristics to the optimum.
[0049]
In this system, an audio signal transmitted from a broadcast facility of an emergency broadcast or a business broadcast is input to a speaker 602 through a broadcast line 601 and is input to a level adjustment circuit 604 of a wireless transmitter 603 for a hearing aid. The audio signal is converted to audio and output.
[0050]
The level adjustment circuit 604 of the hearing aid wireless transmitter 603 adjusts the level of the input audio signal and outputs the adjusted audio signal to the audio data conversion circuit 605. The audio data conversion circuit 605 converts the audio information according to the content. , For example, AAA, ABA, ACC, etc. The transmission circuit 606 converts the converted data into a radio signal and transmits the radio signal.
[0051]
On the other hand, in the hearing aid 607, the receiving circuit 608 receives the data transmitted from the wireless transmitter for hearing aid 603, and the data sound conversion circuit 609 converts received data such as AAA, ABA, and ACC into a corresponding sound signal. The audio amplification circuit / frequency adjustment circuit 610 converts this audio signal into audio having a sound volume and frequency characteristics that are optimal for the listener, and outputs the audio. Therefore, a hearing-impaired person can surely listen to an emergency broadcast or a business broadcast.
[0052]
In this system, since only data is transmitted between the hearing aid wireless transmitter 603 and the hearing aid 607, efficient transmission can be performed.
[0053]
(Seventh embodiment)
In the hearing aid system of the seventh embodiment, the level and frequency characteristics of the sound to be transmitted are optimized according to the surrounding noise.
[0054]
In this system, as shown in FIG. 7, a hearing aid wireless transmitter 703 generates a noise detection circuit 707 that detects a noise level based on noise collected by a noise collection microphone 705, and a broadcast sound collection microphone 704. A level / frequency characteristic adjusting circuit 706 for adjusting the level and frequency characteristics of the adjusted audio signal, and a transmitting circuit 708 for converting the adjusted audio signal into a wireless signal and transmitting the wireless signal. Other configurations are the same as those of the third embodiment (FIG. 3).
[0055]
In this system, when an audio signal transmitted from an emergency broadcast or commercial broadcast equipment is converted into audio by a speaker 702 and output, the microphone 704 collects the audio and the audio signal is adjusted for level and frequency characteristics. Input to the circuit 706.
[0056]
On the other hand, the ambient noise collected by the noise collection microphone 705 is input to the noise detection circuit 707, and the state of the noise detected by the noise detection circuit 707 is input to the level / frequency characteristic adjustment circuit 706.
[0057]
The level / frequency characteristic adjustment circuit 706 adjusts the level and frequency characteristics of the audio signal input from the microphone 704 to an optimal state based on the state of the noise.
[0058]
The adjusted audio signal is transmitted from the transmission circuit 708 and received by the hearing aid 709.
[0059]
As described above, in this system, a hearing-impaired person can surely hear an emergency broadcast or a business broadcast without being affected by ambient noise.
[0060]
(Eighth embodiment)
In the hearing aid system of the eighth embodiment, an emergency broadcast can be reliably transmitted to a hearing-impaired person.
[0061]
In this system, as shown in FIG. 8, emergency information transmitted from an emergency broadcast facility via a broadcast line 801 is emitted from a speaker 802. The wireless transmitter for hearing aid 803 connected to the broadcast line 801 includes an emergency broadcast detection circuit 804 that detects that an emergency broadcast has been performed, an emergency signal generation circuit 805 that generates data according to the content of the emergency information, A transmission circuit 806 for transmitting the generated data, a receiver 807 for the hearing impaired is provided with a reception circuit 808 for receiving the data transmitted from the wireless transmitter for hearing aid 803, and an emergency information from the data. An emergency signal discriminating circuit 809 for identifying the type, an emergency voice generating circuit 810 for generating a voice signal representing emergency information, and a voice for adjusting the generated voice signal to an optimal volume and frequency characteristic for a listener and outputting the voice An amplification / frequency adjustment circuit 811 is provided.
[0062]
In this system, an audio signal transmitted from an emergency broadcast facility is input via a broadcast line 801 to a speaker 802 and an emergency broadcast detection circuit 804 of a wireless transmitter 803 for a hearing aid, and the speaker 802 outputs the emergency information as a voice. I do.
[0063]
When the emergency broadcast detection circuit 804 of the hearing aid wireless transmitter 803 detects that the emergency broadcast is started from the input audio signal, the emergency broadcast detection circuit 804 informs the emergency signal generation circuit 805 of the start of the emergency broadcast. The data is converted into data corresponding to the content, and the transmission circuit 806 transmits the data.
[0064]
On the other hand, in the hearing aid receiver 807, the receiving circuit 808 receives the data transmitted from the hearing aid wireless transmitter 803, and the emergency signal determination circuit 809 determines the content of the emergency information from the received data and responds accordingly. The emergency audio generation circuit 810 generates the generated audio signal. The audio amplification / frequency adjustment circuit 811 adjusts the level and frequency characteristics of the audio signal according to the listener, and outputs the audio. Therefore, the hearing impaired can surely hear the emergency broadcast.
[0065]
In this system, since the contents of the emergency broadcast are converted into data and transmitted, efficient transmission can be performed.
[0066]
(Ninth embodiment)
In the hearing aid system according to the ninth embodiment, the emergency information is displayed in characters or light.
[0067]
In this system, as shown in FIG. 9, the hearing aid 907 includes an LED display unit 910 that displays the emergency information identified by the emergency signal determination circuit 909 with light. Other configurations are the same as those of the eighth embodiment (FIG. 8).
[0068]
In this system, when the receiving circuit 908 of the receiver for a hearing aid 907 receives data transmitted from the wireless transmitter for a hearing aid 903, the emergency signal determination circuit 909 determines the content of emergency information from the received data, and The information is transmitted to the display unit 910, and the LED display unit 910 turns on the LED corresponding to the content and performs character display.
[0069]
Therefore, emergency information can be reliably transmitted to the hearing impaired person by visual information.
[0070]
【The invention's effect】
As is clear from the above description, the hearing aid system of the present invention obtains an audio signal from a broadcast line, so that the number of wirings is reduced (line saving) and the burden of construction is reduced. Yes (saving workability)
[0071]
Also, since the power for the transmitter is obtained by rectifying the sound of the broadcast line, there is no need to supply power from the outside, and more excellent effects can be obtained in terms of line saving and workability.
[0072]
In addition, since the audio signal is output after being accumulated for a certain period of time, the effect that the beginning of the speech can be prevented can be obtained.
[0073]
Further, since the audio information is converted from its content into simple data and transmitted, an effect is obtained that transmission can be performed efficiently.
[0074]
In addition, since the sound signal to be transmitted is controlled by detecting the ambient noise, information can be transmitted without being affected by the ambient noise.
[0075]
Further, it is possible to transmit emergency broadcast information not only by audio information but also by visual information.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a hearing aid system according to a first embodiment of the present invention;
FIG. 2 is a block diagram showing a hearing aid system according to a second embodiment of the present invention;
FIG. 3 is a block diagram showing a hearing aid system according to a third embodiment of the present invention;
FIG. 4 is a block diagram showing a hearing aid system according to a fourth embodiment of the present invention;
FIG. 5 is a block diagram showing a hearing aid system according to a fifth embodiment of the present invention;
FIG. 6 is a block diagram showing a hearing aid system according to a sixth embodiment of the present invention;
FIG. 7 is a block diagram showing a hearing aid system according to a seventh embodiment of the present invention;
FIG. 8 is a block diagram showing a hearing aid system according to an eighth embodiment of the present invention;
FIG. 9 is a block diagram showing a hearing aid system according to a ninth embodiment of the present invention;
FIG. 10 is a block diagram for explaining a conventional technique.
[Explanation of symbols]
101, 201, 301, 401, 501,
601, 701, 801, 901, 1001 broadcast lines 102, 202, 302, 402, 502,
602, 702, 802, 902, 1002 speakers 103, 203, 303, 403, 503,
603, 703, 803, 903, 1005 Hearing aid wireless transmitters 104, 205, 305, 404, 504, 604 Level adjustment circuits 105, 206, 306, 405, 506,
606, 708, 806, 906 transmission circuits 106, 207, 307, 408, 510,
607, 709, 807, 907, 1006 Receiver for the hearing impaired 204 Electromagnetic coupling circuit 304, 704, 705 Microphone 406, 507 Rectifier circuit 407, 508 Transmitter power supply circuit 505 Audio information storage circuit 509 Power supply stability determination circuit 511 Backup power supply 512 Power supply switching circuit 605 Audio data conversion circuit 608, 808, 908 Receiving circuit 609 Data audio conversion circuit 610 Audio amplification / frequency adjustment circuit 706 Level adjustment / frequency characteristic adjustment circuit 707 Noise detection circuit 804, 904 Emergency broadcast detection circuit 805, 905 Emergency signal generation circuit 809, 909 Emergency signal discrimination circuit 810 Emergency audio generation circuit 811 Audio amplification / frequency adjustment circuit 910 LED display unit 1003 Transmitter dedicated broadcast line 1004 Transmitter dedicated power supply line

Claims (9)

An audio transmitted on a broadcast line of an emergency broadcast or a business broadcast is input to a wireless transmitter, and the audio is transmitted from the wireless transmitter to a hearing aid receiver held by a hearing-impaired person. A hearing aid system characterized in that audio transmitted on a line can be heard. The wireless transmitter is electromagnetically coupled to a speaker that emits audio of the broadcast line, and the audio of the broadcast line is input to the wireless transmitter via the electromagnetic coupling. The hearing aid system as described. 2. The wireless transmitter according to claim 1, further comprising a microphone for collecting broadcast sound, wherein sound of a speaker emitting sound of the broadcast line is collected by the microphone and input to the wireless transmitter. A hearing aid system according to item 1. 2. The wireless transmitter according to claim 1, further comprising a rectifier circuit, wherein the audio signal input from the broadcast line is converted into a DC signal by the rectifier circuit and used as a power source of the wireless transmitter. Hearing aid system. The wireless transmitter, an audio information storage unit for storing audio of the broadcast line, a backup power supply, and a rectifier that rectifies a supply power from the backup power supply when a DC power output from the rectifier circuit exceeds a certain voltage. Power supply switching means for switching to the DC power supply of the circuit, wherein the audio input when the backup power supply is used as the supply power is stored in the audio information storage means, and the supply power is switched to the DC power supply of the rectifier circuit. 5. The hearing aid system according to claim 4, wherein the voice stored in the voice information storage unit is sequentially transmitted. The wireless transmitter includes audio content determination means for determining the content of the audio of the broadcast line, and audio data conversion means for converting the audio into data according to the content, the hearing aid receiver, The hearing aid system according to claim 1, further comprising a data-to-speech conversion unit that converts data to voice, wherein the converted data is transmitted from the wireless transmitter to a hearing aid receiver. The wireless transmitter includes a microphone for collecting ambient noise, and adjusts the level and frequency characteristics of audio collected by the microphone for collecting broadcast audio in accordance with the ambient noise detected by the microphone for collecting ambient noise. The hearing aid system according to claim 3, wherein the hearing aid is adjusted. The wireless transmitter includes an emergency broadcast detection unit that detects an emergency broadcast on the broadcast line, and an emergency signal generation unit that converts an audio of the emergency broadcast into corresponding data. Emergency signal discriminating means for identifying the sound of the emergency broadcast, emergency sound generating means for generating the sound of the identified emergency broadcast, and sound amplification and frequency for optimizing the level and frequency characteristics of the sound according to the listener The hearing aid system according to claim 1, further comprising an adjusting unit. The wireless transmitter includes an emergency broadcast detection unit that detects an emergency broadcast of the broadcast line, and an emergency signal generation unit that converts the content of the emergency broadcast into corresponding data, and the hearing aid receiver includes the data 2. The hearing aid system according to claim 1, further comprising: an emergency signal discriminating means for identifying the content of the emergency broadcast from the computer; and a display means for visually displaying the content of the identified emergency broadcast.

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