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JP2004312647

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DESCRIPTION JP2004312647
An object of the present invention is to provide an audio input / output adjustment body capable
of adjusting the sound quality by forming a layer when creating a speaker or a microphone using
a piezoelectric element. A metal sheet or conductive sheet 2 provided with a pair of electrode
wires 3 to which a piezoelectric element 1 is attached, or a layer of an adhesive 4 and a sealing
material 5, characterized in that the material of each layer or the material of each layer The
combination controls the sound quality of the output or input voice. [Selected figure] Figure 1
Voice input / output adjustment body by layer formation
[0001] The present invention relates to adjustment of sound quality characteristics when an
audio signal is input / output to / from a piezoelectric element provided with an electrode.
[0002] When using a piezoelectric element as a speaker for outputting voice received from a
sound source or as a microphone for picking up voice from the outside, in order to adjust the
sound quality of input and output voice, piezoelectric is used. It is necessary to control the
thickness, size and shape of the element itself. [0003] However, there is a limit to the adjustment
of sound quality by controlling the thickness, size and shape of the piezoelectric element itself,
and when attached to a metal plate and other materials after adjustment The sound quality of the
new shape that was created as a result of pasting is different from the previous sound quality,
and needs to be readjusted. Therefore, it is an object of the present invention to provide an audio
input / output adjuster capable of adjusting the sound quality by layer formation. In order to
achieve the above object, according to the present invention, a metal plate or conductive sheet 2
on which a piezoelectric element 1 is attached and a pair of electrode wires 3 are provided, an
adhesive 4 and a seal are provided. A voice input / output by layer formation characterized in
that it is formed from each layer of the fastening member 5 and the sound quality of the sound
generated when sending a voice signal through the electrode wire 3 can be controlled by the
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property of the material of each layer or the combination of materials Provide a coordinator. In
the case where the piezoelectric element 1 vibrates by picking up an external audio signal, the
sound quality of the sound when transmitting the received audio signal to another place directly
through the electrode wire 3 or indirectly through the radio A voice input / output adjustment
body by layer formation characterized in that BEST MODE FOR CARRYING OUT THE INVENTION
(Basic Form) Hereinafter, an embodiment of the present invention will be described with
reference to the drawings. FIG. 2 is a block diagram showing the configuration of the voice input
/ output adjustment unit by layer formation in an embodiment of the present invention. In
addition to the case where one piezoelectric element 1 is attached to one side of a metal plate or
conductive sheet 2 as shown in FIG. In addition to the case where the electrode wire 3 is
connected to the amplifier 6 as shown in FIG. When an audio signal amplified from the sound
source 7 through the amplifier 6 is transmitted to the piezoelectric element 1 through the
electrode line 3, electrical energy as an audio signal received is converted to mechanical energy
by the property of the piezoelectric element 1. This becomes vibration, and a sound wave from a
sound source is generated through the piezoelectric element 1.
At that time, the vibration generated by the piezoelectric element 1 is transmitted to the metal
plate or the conductive sheet 2 to which it is bonded, and further to the whole obtained by
sealing them with the sealing material 5. By obtaining larger vibration than in the case of the
element 1 alone, even if the volume obtained from the sound source is the same, it is finally
possible to generate a larger volume. Further, as shown in FIG. 3, the metal plate or conductive
sheet 2 to which the piezoelectric element 1 is attached, and the adhesive 4 and the sealing
material 5 form another layer, so that the characteristics of those materials The sound quality
can be adjusted by the way of combination. That is, the sound quality can be adjusted by
changing the frequency characteristics depending on the difference between the property (hard
and soft) of the material and the shape (size, thickness and thickness) of the material. Also,
depending on the sealing method (sealing, pressure bonding, sealing, etc.) and the pressure
applied when sealing the metal plate or the conductive sheet 2 to which the piezoelectric element
1 is attached with the sealing material 5. The sound quality can be adjusted. Since the whole
sealed with the sealing material 5 acts as a vibrating body, it is possible to use as a waterproof
vibrating body by using a waterproof sealing material, The use of a printable sealant also makes
it possible to use it as an advertising medium or the like that produces sound. Second
Embodiment In the first embodiment, the side of the piezoelectric element 1 as a speaker
emitting sound by vibrating like a speaker has been described. However, in the second
embodiment, the same piezoelectric element 1 is used as a microphone. This will be described in
the aspect as a vibrator which absorbs external sound and emits vibration. The piezoelectric
element 1 that has received an external sound wave vibrates, but mechanical energy as vibration
received as a property of the piezoelectric element 1 is converted into electrical energy, and
another electric wire is connected through the electrode wire 3 to which it is connected. An audio
signal can be generated from a speaker or the like installed at a place. Also in this case, the
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magnitude of the vibration of the piezoelectric element 1 receiving the sound wave, that is, the
frequency characteristic which is one of the factors determining the sound quality, is the metal
plate or the conductive sheet 2 to which the piezoelectric element 1 is attached. And by the
adhesive 4 and the sealing material 5 forming another layer, it is adjusted by the characteristic
and combination method of those materials. (Examples of Modifications, Applications, Etc.)
Although the basic embodiments of the present invention have been described above, the
embodiments of the present invention are not limited to the above-described ones. Application
etc. are also possible.
In the above embodiment, the electrode wire 3 is connected to the sound source 7 or the
amplifier 6 connected to the sound source, and the whole sealed with the sealing material 5
forms a layer for adjusting the sound input / output. However, it is also possible to connect a
light emitter such as an LED to the electrode wire 3 to function as a layer for adjusting the
intensity of light emission. As described above, by using the voice input / output adjusting body
according to the layer formation of the present invention, when the speaker or the microphone
using the piezoelectric element 1 is formed, the sound quality is adjusted. be able to. In addition,
by selecting the sealing material 5, it is possible to have a feature as a waterproof or printable
voice input / output adjustment body. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan
view showing a voice input / output adjusting body by layer formation of the present invention.
FIG. 2 is a block diagram showing the configuration of a voice input / output adjustment body by
layer formation according to an embodiment of the present invention. FIG. 3 is a cross-sectional
view taken along the line 1A-A. [Description of the code] 1 Piezoelectric element 2 Metal plate or
conductive sheet 3 Electrode wire 4 Adhesive 5 Sealing material 6 Amplifier 7 Sound source
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