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JP2011010246

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JP2011010246
An object of the present invention is to aid in hearing by a person who is deaf-blind by
converting the frequency of part of speech or speech data and synthesizing the speech or speech
data after the frequency conversion and the original speech or speech data not subjected to the
frequency conversion. Do. A voice modulation system characterized in that voices in a preset
frequency range among input voices are frequency-converted into another frequency range and
output, and voices out of the frequency range are output without frequency conversion. When
used as a hearing aid 1, the voice acquisition unit 11, the A / D conversion unit 12, the filter 13,
the octave conversion unit 14, the amplification unit 15, the synthesis unit 16, and D / A
conversion It comprises a unit 17 and an audio output unit 18. [Selected figure] Figure 1
Voice modulator and voice data modulator
[0001]
The present invention frequency-converts a part of speech or speech data, and synthesizes the
speech or speech data after the frequency conversion with the original speech or speech data not
subjected to the frequency conversion, so that the person who is deaf-blind hears the speech. An
audio modulator and an audio data modulator that can be assisted.
[0002]
In Japan (Japan), the deaf person with awareness is 4.5% of the population, and it is reported that
it is 11.7% of the population including the deaf person without awareness (2008, rehabilitation)
Report on the “Hearing Compensation Rehabilitation” symposium sponsored by all hearing
loss).
08-05-2019
1
[0003]
The audible sound region is usually in the range of 20 Hz to 20 kHz as shown in FIG. 6, and the
main frequency used in Japanese is around 1000 Hz (about 150 Hz to 1500 Hz), and the
frequency in this region is If it becomes difficult to hear, it is said that conversation will be
disturbed.
As you age, it becomes difficult to hear the high-pitched sound.
Many deaf people contain many elements of high-pitched deafness.
[0004]
(A) Many people with hearing loss have difficulty hearing the high-pitched range. Therefore,
many hearing aids currently on the market are addressed by increasing the sensitivity of the high
range (see FIG. 7). However, actually, it is not possible to eliminate the "hard to hear" condition
by increasing the sensitivity of the high range only. "The sound of speech including words can be
heard" and the fact that "the words in speech including words can be understood" are different.
Amplifying a voice in the frequency domain that is originally difficult to hear does not necessarily
mean that "the words in the voice can be recognized". Because of this, the current situation is that
deaf people often purchase hearing aids but do not actually use them.
[0005]
(B) Telephone headsets have also been developed for the deaf. The configuration of the headset
for this telephone is basically the same as a hearing aid. Moreover, ordinary telephones do not
have the function of increasing the high range, and at most only increase the volume uniformly
over the entire range.
[0006]
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(C) Disaster broadcasts from outdoor installation speakers and various information broadcasts in
stations and trains, even if the volume is increased for people with hearing loss, as described in
(a) Words do not always sound "recognizable" and may not be heard by people with hearing loss.
In addition, disaster broadcasts and guidance broadcasts may be performed using voices in the
high tone range, but they may be recognized as unpleasant voices by persons with ordinary
hearing.
[0007]
The object of the present invention is to convert the frequency of a part of voice or voice data,
and to combine the voice or voice data after the frequency conversion with the original voice or
voice data not subjected to the frequency conversion, thereby making the voice by the deaf
person It is an object of the present invention to provide an audio modulator and an audio data
modulator that can assist in listening.
[0008]
The present invention is summarized as (1) to (6).
(1) A voice modulator characterized by frequency-converting voices in a preset frequency range
of input voice into other frequency ranges and outputting them, and voices out of the frequency
range without frequency-converting. .
[0009]
(2) The voice modulator according to (1), which frequency-converts the input voice in octave
units.
[0010]
(3) The voice modulator according to (1) or (2), wherein the voice subjected to frequency
conversion and the voice not subjected to frequency conversion are synthesized at a
predetermined ratio.
[0011]
(4) The voice data is input, and voice data of a preset frequency range among the input voice
data is frequency converted to another frequency range and output, and the voice data outside
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the frequency range is not frequency converted An audio data modulator characterized in that it
is sent to an output device.
[0012]
(5) The voice data modulator according to (4), characterized in that frequency conversion of
input voice data is performed in octave units.
[0013]
(6) The voice data modulator according to (4) or (5), wherein the voice data subjected to the
frequency conversion and the voice data not subjected to the frequency conversion are
synthesized at a predetermined ratio.
[0014]
In the present invention, it is possible to synthesize the frequency-converted speech (speech
data) and the original speech (speech data) at an appropriate ratio, for example, a ratio of 2 to 8
(intensity ratio).
In this case, the frequency-converted voice (voice data) can be 10 (100%), and the original voice
(voice data) can be zero (0%).
[0015]
Also, in the present invention, synthesized speech can be amplified at an appropriate rate.
[0016]
According to the voice modulator (or voice data modulator) of the present invention, part of voice
(or voice data) is subjected to frequency conversion, and the voice after the frequency conversion
(or voice data) and an original without frequency conversion. By synthesizing with the voice (or
voice data) of H, it is possible to assist the hearing loss by the deaf person.
Further, since the frequency conversion in octave units (12 semitones) causes no incongruity,
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discomfort does not occur, and neither a chord nor a dissonance (sound less than 12 semitones)
occurs, so that the sense of discomfort does not occur.
Furthermore, by combining the frequency-converted voice (or voice data) and the frequencyunshifted voice (or voice data) at a predetermined ratio, the person who has a high hearing aid
has a sense of discomfort, and the person who does not have hearing loss feels strange. No voice
(or voice data) can be generated.
[0017]
It is an explanatory view showing a 1st embodiment which applied a voice modulator of the
present invention to a hearing aid.
It is explanatory drawing which shows 2nd Embodiment which applied the sound modulator of
this invention to the hearing aid.
(A) is a diagram showing listening characteristics, (B) is a diagram showing a voice that can be
heard when the inaudible voice and the inaudible voice are lowered by one octave by the hearing
aid.
(A) shows a listening characteristic, (B) shows a hearing aid, and A shows a voice which is easy to
hear, a hard to hear, a voice which can not be heard, and a voice which is lowered by one octave.
It is explanatory drawing which shows 3rd Embodiment which applied the audio | voice data
modulator of this invention to the mobile telephone. FIG. 6 is a diagram showing an audible
sound area. It is a figure which shows the sensitivity of a typical hearing aid.
[0018]
FIG. 1 is an explanatory view showing a first embodiment in which the sound modulator of the
present invention is applied to a hearing aid. In FIG. 1, the hearing aid 1 includes a sound
acquisition unit 101, a low pass filter 102, an A / D conversion unit 103, a filter (high pass filter)
104, an octave conversion unit 105, a synthesis unit 106, and a low pass filter 107. The
amplification unit 108, the delay 109, the D / A conversion unit 110, the low pass filter 111, and
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the audio output unit 112.
[0019]
The voice acquired by the voice acquisition unit 101 is sent to the A / D conversion unit 103 via
the low pass filter 102 and digitized, and only the high frequency range (high frequency range)
component is extracted by the filter 104. This treble range component is shifted down by the
octave conversion unit 105. On the other hand, the digitized original voice is sent through the
low pass filter 107 to the digital amplification unit 108. The amplification factor of the
amplification unit 108 may be 1 or less or 1 or more. The digital voice signal amplified by the
amplification unit 108 is delayed by the delay 109 for timing adjustment, and is synthesized by
the synthesis unit 16 with the voice whose range is shifted down by the octave conversion unit
105. Then, this synthesized voice is converted into an analog signal by the D / A conversion unit
110, and is sent to the voice output unit 112 through the low pass filter 111, and the voice
output unit 112 outputs the voice whose voice range is adjusted. .
[0020]
FIG. 2 is an explanatory view showing a second embodiment in which the sound modulator of the
present invention is applied to a hearing aid. In FIG. 2, the hearing aid 2 includes a sound
acquisition unit 201, a filter 202, an A / D conversion unit 203, an octave conversion unit 204, a
D / A conversion unit 205, a synthesis unit 206, and a low pass filter 207. It comprises an
amplification unit 208, a delay 209, a low pass filter 210, and an audio output unit 211.
[0021]
Only the high frequency range (high frequency range) component of the sound acquired by the
sound acquisition unit 201 is extracted by the digital filter 202. The high-frequency range (high
frequency range) component is digitized by the A / D conversion unit 203, and the digitized voice
data is downshifted by the octave conversion unit 204 and sent to the D / A conversion unit 205.
, Is digitized. On the other hand, the original voice is sent to the analog amplification unit 208 via
the low pass filter 207. The amplification factor of the analog amplification unit 208 may be 1 or
less or 1 or more. The amplified voice is delayed by the delay for delay adjustment 207. The
digital signal from the delay 207 and the digital voice from the D / A converter 205 are
synthesized by the synthesizer 27. Then, this synthesized voice is sent to the voice output unit
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211 via the low pass filter 210, and the voice output unit 211 outputs the voice whose range is
adjusted.
[0022]
FIG. 3A is a diagram showing the listening characteristics, in which A indicates a sound that is
easy to hear, B indicates a sound that is difficult to hear, and C indicates a sound that can not be
heard. FIG. 3B shows the sound that can be heard when the inaudible sound B and the inaudible
sound C are lowered by one octave by the hearing aid 1 in FIG. 1 or the hearing aid 2 in FIG. In
this way, the inaudible voice B and the inaudible voice C are converted into audible voice.
[0023]
Also in FIG. 4A, A indicates a voice that is easy to hear, B indicates a voice that is difficult to hear,
and C indicates a voice that can not be heard. FIG. 4 (B) shows the sound that can be heard when
the easy-to-hear sound A, the hard-to-hear sound B and the inaudible sound C are lowered by one
octave by the hearing aid 1 of FIG. 1 or the hearing aid 2 of FIG. . In this way, the inaudible voice
B and the inaudible voice C are converted into easy-to-hear voice as well as easy-to-hear voice A.
[0024]
FIG. 5 is an explanatory view showing a third embodiment in which the voice data modulator of
the present invention is applied to a portable telephone. In the first and second embodiments, the
case where the original voice is analog voice has been described. In the present embodiment, the
original voice is digital data sent from the other party, as in mobile phone communication.
[0025]
In FIG. 5, the audio data modulator 3 includes a filter (high pass filter) 304, an octave conversion
unit 305, a combining unit 306, a low pass filter 307, an amplification unit 308, a delay 309, and
a D / A conversion unit 310. , A low pass filter 311, and an audio output unit 312.
[0026]
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The digitized audio signal SD is input to the filter 304, and only the high frequency range (high
frequency range) component is extracted.
This treble range component is shifted down by the octave conversion unit 305. On the other
hand, the digitized original voice is sent through the low pass filter 307 to the digital
amplification unit 308. The amplification factor of the amplification unit 308 may be 1 or less or
1 or more. The digital voice signal amplified by the amplification unit 308 is delayed by the
timing adjustment delay 309, and is synthesized by the synthesis unit 16 with the voice whose
range is shifted down by the octave conversion unit 305. Then, this synthesized voice is
converted into an analog signal by the D / A conversion unit 310, and is sent to the voice output
unit 312 via the low pass filter 311, and the voice output unit 312 outputs voice whose
frequency is adjusted. .
[0027]
1, 2 Hearing aid 101, 201 Audio acquisition unit 102, 107, 110, 207, 210, 307 LPF 103, 203 A
/ D conversion unit 104, 202, 304 Filter 105, 204, 305 Octave conversion unit 108, 208, 308
Amplification Sections 106, 206, 306 Synthesizers 109, 209, 309 Delays 110, 205, 310 D / A
Converters 112, 211, 312 Voice Output Unit
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