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PROBLEM TO BE SOLVED: A conventional throat microphone can not be used under noise
because it is easy to receive external noise. There was also a drawback that howling was easy to
occur. These throat microphones were thin, small and could not have a light throat. SOLUTION:
In the present invention, in order to compensate for these drawbacks, a completely new type of
piezoelectric throat microphone has been invented. In particular, it is an invention in which a
sufficient sound range can be obtained with a clear sound pressure from the low frequency range
to the high frequency range. The present invention can select and use a driver suitable for the
purpose of use. Technically, we provide superior piezoelectric throat microphones, such as
bimorph specifications, the use of trapezoidal ceramics, and new specifications for electrode
plates, which have not been used to date. [Selected figure] Figure 8
Piezoelectric throat microphone
The present invention relates to a piezoelectric microphone related to a sound collector
Throat microphone Patent application 2003-351919 Noise blocking type handset Patent
application Hei 5-128443 Throat microphone with handle Patent application 2003-419204
handset Patent application 2000-230346 Transmission / reception device Patent application
The present invention often suffers from noise, which is said to be the most serious drawback of
the conventional method (electric method), and has the drawback that it is difficult for the other
person to understand the language.
Another drawback is that the microphone can not be made thin and light.
The present invention provides a method of efficiently transmitting the vibration of the
piezoelectric driver directly. Conventional piezoelectric microphones have poor playback ability
in the high range and lack power, while sound pressure and frequency are insufficient in the
middle and bass range. The present invention makes it a technical subject to solve such problems
of the prior art, and aims to improve the technology to improve the reproduction capability from
the low tone range to the middle range and the high tone range by the development of a
piezoelectric driver.
In the present invention, the method of using the ceramic and the electrode plate was reviewed,
and then the development of the thickness size and shape of the ceramic, and then the material,
thickness, size and shape of the electrode plate were developed. The thickness of the ceramic was
set to t0.05, and it was round with a diameter of 9 mm. According to the required performance, it
was made into a rectangle of t0.05 x width 9 mm x length 12 mm, and the specifications of the
ceramic corresponded to the bimorph.
According to the present invention, it is possible to select a part having the shape, etc. of the
ceramic, the electrode plate, and the like according to the required performance, size, etc., and to
manufacture a product with good performance. Furthermore, by using ceramics as a bimorph, it
is possible to reproduce from low to medium to high, and to reproduce and transmit to the other
party a good sound with good efficiency and little noise.
The piezoelectric throat microphone of the present invention can be comprehensively developed
by using the thickness shape and size of the ceramic and using the ceramic as a bimorph, and it
is also an object of the invention to be small, thin, light and noise Not sound pressure, frequency
can also be designed to control.
It is used in a noisy place, for example, at a tunnel digging site (100 dB) and can be heard clearly
without any problem.
"Nodo" The words coming out of the throat are transmitted clearly, but the outside noise (noise)
is not a system. Mobile phones, transceivers, radios, etc. are also used as a means of
communication, and it is thought that the range of use will be expanded from now on (trade
name: Sound Touch)
The piezoelectric throat microphone of the present invention is driven by voltage, so a small
amount of current flows, but it can be used with about 1/20 of the dynamic microphone, so it
consumes less power and there is no magnetic influence at all. It can be called an energy saving
type microphone. It is adopted and used for the sound touch (communication system) currently
sold. We are planning to use hearing aids and underwater speaker systems in the future, and we
believe that the marketability of the future is very high.
As a result of studying the shapes of the ceramic and the electrode plate in order to solve the
problems of the present invention, it was found that the shapes of the four types of ceramics and
the shape of the electrode plate are most optimal as shown in the following figures. The number
of drivers to be used can be selected according to the required performance, and stable high
quality microphones can be manufactured. FIG. 1 is a plan view of a throat microphone driver.
FIG. 2 is a cross-sectional view of FIG. The shape of FIG. 3 is adopted when the power is required
from FIG. The reaction is sensitive. The figure is a plan view. FIG. 4 is a cross sectional view of
FIG. 3 and the shape of FIG. 5 is adopted when pressure or the like is applied to the throat
microphone from the outside. 6 is a cross-sectional view of FIG. 5, and the shape of FIG. 7 is a
throat microphone that adopts our unique “full frequency nodal center support method”. This
shape is adopted when producing a large throat microphone. It may be a little thicker. FIG. 8 is a
cross-sectional view of FIG.
Explanation of sign
1: Ceramics 2: Electrode plate (use of material 42 alloy of electrode) 3: Diagonal part of driver's
foot 3: Ceramics 5: Electrode plate 6: Triangle of triangular part: Throat microphone driver's foot
Part 7 will be ceramic 8 electrode plate 9 will be bent at a right angle from the hatched part and
will be the foot of the throat microphone driver. 10, ceramic 11 electrode plate 12 center
support hole
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