JP2005349155

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DESCRIPTION JP2005349155
An object of the present invention is to provide a portable sound source direction detection and
transmission device which detects and transmits the arrival direction of a sound source to a
person who is deaf. SOLUTION: The outputs of four microphones 20-23 arranged on the front,
rear, left and right of the body by wearing a sound source direction detecting and transmitting
device are micro-controlled via amplifiers 30 to 33 and sound pressure comparators 40 to 43.
The processor 71 is provided with means for determining the arrival direction of the sound
source, and means for driving and vibrating one of the vibration motors 60 to 63 in the sound
source arrival direction and transmitting the arrival direction of the sound source by bodily
sensation. Detect the occurrence of sound, inform the direction of it, and aid the confirmation of
the situation by visual observation. [Selected figure] Figure 1
Sound source direction detection transmission device
[0001]
The present invention is a sound source applied especially to people with hearing impairments
who wear it and carry it, sense the direction of the sound source in the environment of normal
living behavior and assist in action such as alerting or danger avoidance The present invention
relates to a direction detection transmission device.
[0002]
The conventional sound source direction detection device can not be worn and carried by a
person with impaired hearing (see, for example, Patent Document 1).
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1
According to the conventional sound source direction detection device, it has a function to detect
the direction of the sound source correctly, but the application of the conventional sound source
direction detection device is the automatic surveillance camera, fixed equipment of service robot
and navigator for divers etc. There are problems in using it for people with limited hearing to
easily carry and carry out normal living activities and to know the sound source direction as well
as the sound generation.
[0003]
In addition, devices such as hearing aids can only amplify the volume, can not detect the
direction of the sound source, and can not use even hearing aids. It Is difficult.
[0004]
Unexamined-Japanese-Patent No. 11-83982
[0005]
The above prior art has the following problems.
１．
The hearing aid can determine the presence or absence of the sound, but can not determine the
direction of the sound source. ２． Even if it is a sound source direction detection device, it is
difficult to use it in the case where an individual carries and carries out a normal life action by
sound source direction detection with a device such as a fixed automatic surveillance camera.
[0006]
The above-mentioned conventional example provides a means for people with hearing difficulties
who are difficult to carry to know the sound source direction in normal daily life activities.
[0007]
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2
In order to solve the above-mentioned subject, a sound source direction detection transmission
device by the present invention is provided with the following characteristic composition.
(1) A sound detection transmission block consisting of four sets of microphones and a vibration
motor is incorporated into a belt and wound around the body to mount the sound detection
transmission block on the front, rear, left, and right of the body. By dividing 360 degrees into 4
blocks, it is simplified, and it is possible to combine in any direction of 4 directions such as front,
rear, left and right which is easy to distinguish practically without detection of precise direction,
and finally the direction of sound generation Inform and assist in visual confirmation of the
situation.
[0008]
(2) The apparatus according to the above (1), wherein an amplification circuit for amplifying a
signal of a microphone, a comparator capable of switching and setting the level judgment of
sound pressure, a microprocessor, a motor drive circuit for driving a vibration motor, And a
controller configured of a battery serving as a power source of the
[0009]
(3) The apparatus according to (1) above, wherein the vibration motor of the sound detection /
transmission block that has detected the sound first is driven to transmit the sound source
direction to the belt wearer by the sensation of vibration.
[0010]
(4) The apparatus according to (1), wherein the sound detection range of one sound detection
and transfer block is within a range orthogonal to the line connecting the sound detection and
transfer blocks on both sides adjacent to each other. If the sound is detected earlier than the
other sound detection transfer blocks, it is determined that the sound source is within the range
angle, and if two adjacent sound detection blocks are detected simultaneously, one of the sound
detection blocks is detected. Become a priority.
[0011]
(5) The apparatus according to the above (1), wherein the microprocessor determines the order
of sound detection, determines one vibration motor to be driven according to the determination
result, and stops the vibration motor after driving for a fixed time .
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[0012]
(6) The apparatus according to (1), wherein the microprocessor temporarily stops the sound
detection operation while driving the vibration motor after determining the order of sound
detection, and resumes the sound detection operation after stopping the vibration motor. .
[0013]
In the present invention, since the rising signal of the sound is used, the vibration motor is driven
after the sound detection determination, the continuation of the sound is determined immediately
after stopping, and the sound source direction detection is restarted after the sound becomes
lower than the detection level. Do.
[0014]
As described above, according to the present invention, by mounting the sound source direction
detection and transmission device, the sound source direction detection and transmission device
can be provided to know the detection direction of the sound source by the feeling of vibration
and assist visual judgment of the situation. .
[0015]
FIG. 1 is a block diagram showing the configuration of a sound source direction detection /
transmission device according to a first embodiment of the present invention, FIG. 2 is a layout
diagram of sound detection / transmission blocks in the embodiment, and FIG. It is an
arrangement ¦ positioning figure of a detection transmission block.
[0016]
By mounting on the body a belt 3 incorporating four sound detection and transfer blocks 10, 11,
12, 13 shown in FIG. 2, the belt 3 is disposed on the front, rear, left and right on the horizontal
plane of the body as shown in FIG.
As shown in FIG. 1, the outputs of the microphones 20, 21, 22 and 23 in these sound detection
and transfer blocks 10 to 13 are amplified by the four amplifiers 30, 31, 32 and 33, and then the
sound pressure comparator 40. , 41, 42, 43, and input to the microprocessor 71.
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[0017]
The microprocessor 71 drives and vibrates one of the vibration moques 60, 61, 62, 63 via the
motor drive circuits 50, 51, 52, 53.
[0018]
The detection order is determined by the difference in distance from the sound source to each of
the microphones 20-23, and a change in the signal amplified by the amplifiers 30-33 and
exceeding the sound pressure set by the setting unit 70 is input to the microprocessor 71 and
firstly Determine the detected signal.
[0019]
When the sound source is positioned in a direction orthogonal to a line connecting two adjacent
sound detection and transfer blocks, changes in the two signals are simultaneously detected, but
sound detection blocks located in front and behind are prioritized.
[0020]
The microprocessor temporarily stops the next sound source direction detection immediately
after detecting the sound source direction, and resumes the next sound source direction
detection with no sound detection input after the vibration motor is stopped.
[0021]
The power source for powering the present invention is a battery, which is excellent in
portability.
[0022]
Since the direction in which the sound detection and transfer block 10 closest to the sound
source direction shown in the example of FIG. 3 is located is the sound source direction, the
microprocessor 71 first detects the signal change and the position of the sound detection and
transfer block 10 is the direction of the sound source. It judges and drives only the squeeze
motor 60 of the detected block, and transmits the sound source direction to the wearer by the
feeling of vibration.
Configuration block diagram of sound source direction detection transmission device showing an
embodiment of the present invention Arrangement of sound detection transmission block of
sound source direction detection transmission device showing an embodiment of the present
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invention body of sound source direction detection transmission device showing an embodiment
of the present invention Figure showing detection example of sound source arrival direction
when attached to
Explanation of sign
Reference Signs List 1 controller 2 cable 3 belt 10, 11, 12, 13 sound detection transmission
block 20, 21, 22, 23 microphone 30, 31, 32, 33 amplifier 40, 41, 42, 43 sound pressure
comparator 50, 51, 52 , 53 Motor drive circuit 60, 61, 62, 63 Vibration motor 70 Sound
pressure level setter 71 Microprocessor
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