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Title 13 Invention Title
hearing aid
3. Detailed Description of the Invention The present invention relates to a hearing aid. More
particularly, it relates to hearing aids that allow their own voices to be heard small. Hearing aids
for people with hearing impairments are known to be various types such as box, ear loss,
eyeglass and inlaid, external, general toni, external sound received by a microphone, converted
electrically and amplified by an amplifier After that, it has a configuration to listen to the
receiver. Also, a combination of a self-recommendation sound lid adjuster and a tone controller II
is known. However, 1 hearing aid @ has a drawback that when the microphone picks up its own
voice, its own lip is closer to the hearing aid than the person around it, so its own voice can be
heard louder than the ambient sound. there were. Therefore, many of the hearing aid users who
can raise their sound-volume and hear the surrounding sound, especially distant sounds and
sounds, as much as they could, until now, have a smaller, smaller voice. There was iuw. The
purpose of the present invention is to provide a hearing aid in which the user's own voice can be
heard smallly in response to the request on the game. Hereinafter, a representative embodiment
of the present invention will be described based on the attached surface. In the figure, reference
numeral 1 denotes a known hearing aid, which has a configuration 1c in which external sound is
received by a microphone 2 to be an electrical change, amplified by an amplifier 3 and heard by
a receiver 5 via an automatic volume meter 4. 6 is a bone EndPage: 1 conduction m ficrophone
that picks up the bone conduction sound signal (vibration) of the wearer's own body to be an
electrical change, and picks up the bone conduction sound signal (shock 1jll) of the wearer of the
hearing aid 1 Do. Then, in the present invention, the electric signal output from the radial bone
conduction type microphone 6 is converted to a direct current through the bypass filter 11
detector 8, the integrator 9 and the like, and then input to the automatic volume controller 4)
When the output electrical signal of the bone conduction microphone 6 exceeds the set level, the
acoustoelectric signal from the microphone 2 of the hearing aid is reduced. According to the
study of the present inventor, it has been found that the hearing aid wearer's own voice usually
sounds about 10 dB greater than the voices of other people and the surrounding sound.
Therefore, by picking up the voice of the hearing aid wearer, when the voice exceeds a certain
level, specifically, for example, by lowering the output of the hearing aid by about 10 dB when
emitting a voice of normal strength. The present invention has been completed by finding that
the disadvantages of the conventional hearing aid can be eliminated. As shown in FIG. 2, the
vibration pickup element 6A of the piezoelectric element is incorporated in a vibration
transmitting material 6B such as an earpiece as the bone conduction noise star microphone 6 to
be V4 according to the present invention, and an output electric signal is output by the lead
l1i6C. It is possible to use one that derives
As shown in the above figure, as a configuration in which such a microphone 6 is combined with
the hearing aid 1, an acoustic hole 6D is provided in the vibration transmitting member 68, and
the acoustic hole 6D is incorporated in the hearing aid 1 of the earlid type or the like. Receiver
(earphones are common. A) a sound conduit 10 leading the sound from 5) may be used. In the
figure, reference numeral 11 denotes a battery. . Alternatively, it may be box-shaped, glassesshaped and in-ear shaped, and the bone-conducted speech signal transmitted by the tfc bone
conduction microphone 6 to the body of the hearing aid wearer is not limited to the abovementioned in-ear shape. (Vibration) is picked up to make a single change, specifically, it is
attached to the forehead, larynx, nose, mastoid, cheekbone, jaw, occipital region, etc. It is also
good. According to the present invention, when the wearer of the hearing aid s11 and the bone
conduction shoe microphone 6 utters, the vibration pickup 6A of the microphone 6 picks up the
bone conduction sound signal (vibration), and the electric change is made, and the output electric
signal is When the setting level is exceeded, the collected electric signal from the microphone 2
is lowered (for example, by about 10 clB) due to the operation of the automatic volume 111E @ 4
of the hearing aid 1 and the like). ) And the receiver 59 output may drop. Therefore, the wearer's
own voice of the hearing aid 1 is output small 'T: cut. As a result, it is possible to set C so that the
voice ht # las sound of the distant person can be easily opened and set wide, by setting the
polynimes of the Dj main source IjIK d% 41i 1-unit large.
4. Brief description of the drawings. FIG. 1 is a circuit diagram showing a representative
embodiment of the present invention, FIG. 2 is a partially cutaway perspective view showing one
embodiment of the present invention applied to the earlobe-shaped sleeve hearing instrument. It
is. In the figure, 1 indicates a hearing aid, 2 indicates a sound collecting microphone, 3 indicates
a jvilIiI device, 4 indicates an automatic volume controller, 5 indicates a receiver, and 6 indicates
a bone conduction microphone. EndPage: 2
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