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JPS564996

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DESCRIPTION JPS564996
Description 1, title of the invention
Transmitter / receiver using ear microphone
3. Detailed Description of the Invention EndPage: The present invention relates to a transmitting
/ receiving apparatus using a vibration pickup type ear microphone. More specifically, in a
transmitting / receiving apparatus in which an ear microphone and a receiver are combined to
enable transmission and reception with one ear, noise and noise caused by the sound wave of the
reception sound and the receiver itself are prevented. The present invention relates to a
transmitting / receiving device in which the occurrence of urling does not occur. One of the
inventors of the present invention has previously proposed a vibration pick-up type ear
microphone for picking up a bone conduction sound signal (vibration) to be transmitted to the
wall of the ear canal and converting it into an electric signal according to JP-B-53-39763. In
addition, as for a transmitting / receiving apparatus in which the vibration pickup type ear
microphone and the receiver are combined to enable transmission and reception, Japanese Utility
Model Laid-Open Nos. 51-117511, 51-121409, 52-40614 and It proposed by each gazette etc.
of the same 52-40615 issue. In the transmission / reception apparatus using such a vibration
pickup type ear microphone, as described in the above-mentioned Japanese Utility Model
Application Publication No. 52-406], the ear microphone is attached to one of the ear canals and
the receiver is attached to the other ear canal. However, as described in the aforementioned
Japanese Utility Model Application Publication Nos. 51-117511, 51-121409 and 52-40614, or
as described in Japanese Utility Model Application Publication No. 53-44428, It is hopeful to let
the receiver's earpiece sound @ 1 pass through the same ear canal as the ear canal attached.
However, in the case of the former configuration, both ears will be occluded jL, but in the case of
the latter configuration, at least one ear canal can be opened and not only the reception sound
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from the receiver Because it is possible to have direct conversations with people around you, and
to be able to hear attentions from fires etc., you can ensure safety. However, according to this
latter configuration, although it is a south benefit in terms of the safety floor, the following
disadvantages can be observed. 0) When the output level of the receiver is increased, the
vibration due to the sound wave of the reception sound or the mechanical vibration of the
receiver itself (when the receiver is incorporated in the ear microphone). Gino Ulling may occur
due to transmission). ■ Voice activation controller (voice condrude transmitter etc.). When
automatic switching of transmission and reception is performed by the output of the ear figure
phone, the sound wave of the reception sound or the mechanical vibration of the receiver itself
may be input to the ear microphone, and the voice activation controller may malfunction.
Therefore, an object of the present invention is to provide a transmitting / receiving apparatus in
which a vibration pickup type ear microphone and a receiver are combined to enable
transmission / reception with at least one ear, without the drawbacks of the above [l] and (2) In
order to provide a transceiving device that The details of the present invention for achieving the
above object and the other objects described later will be explained based on representative
embodiments shown in the drawings. Each figure is a schematic view showing a representative
embodiment of the present invention. FIG. 1 shows an embodiment in the case where the
receiver is provided outside the ear microphone, and FIG. 2 shows an embodiment in the case
where the receiver is provided inside the ear microphone. In the figure, 1 is a vibration pickup 2
such as a piezoelectric element for picking up a bone conduction sound signal from the wall of
the ear canal, and a vibration pickup type ear microphone having a sound path 3 for passing a
receiving sound to the ear canal. 4 is an ear canal to which the ear microphone 1 is attached The
receiver which makes a receiving sound pass to the same ear canal as a. Reference numeral 5
denotes the vibration pickup 2 of the ear microphone (hereinafter referred to as a sound
vibration pickup. A vibrator having a vibration pickup 6 having the same or substantially the
same frequency characteristics as in (a), and preferably not through an anti-vibration material so
as not to pick up a bone conduction sound signal (vibration). Etc. or on the shoulders, waist, etc.
In the present invention, the ear microphone 1 and the correction device 5 include the vibration
pickup 2 for voice and the vibration pickup 6 of the correction device (hereinafter referred to as
a correction vibration pickup. ), The received sound from the receiver 4 is input so that the
EndPage: 2 same condition is acoustically. Further, the surface vibration pickups 2 and 6 are
electrically connected to each other so as to cancel each other out the voltage generated by the
sound wave of the receiving sound or the mechanical vibration of the receiver itself. Further, the
present invention will be described in detail by each embodiment. Embodiment 1 In this
embodiment, the receiver 4 is provided outside the ear microphone 1 and the corrector 5, and
the receiver 4 communicates with the ear microphone 1 and the corrector 5 through the sound
conduit passing the output sound. An example of the case is shown in FIG. In this embodiment,
sound conduits (elastic tubes such as rubber tubes are preferred. 7) acoustically equidistantly
connected to the ear microphone 1 and the straightener 5 at one end and the other end to the
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receiver 4. tfc, plane vibration pickup 2, 6 one of the same poles (minus comrade or plus
comrade.
) Are electrically connected by connecting eight lead wires on one side, and the other lead wire
8B. 8B (not connected side. ) Are leading to the transmitter 9. Second Embodiment] This
embodiment is an example in which the receiver 4 is provided inside the ear microphone 1 and
the corrector 5, the specific example of which is shown in FIG. In this embodiment, receivers 4A
and 4B having the same characteristics are installed on the ear micro-bon 1 and the corrector 5
so as to acoustically make the same condition for the surface vibration pickup 2 ° 6. . Also, as in
Example 1, the surface vibration pickup 2 '. One of the six homosexuals is connected to
electricity. The action of the present invention is as follows. The output of the receiver 4 is
simultaneously different to the ear microphone 1 and the corrector 5 through the sound conduit
7 in the case of Example 1 and directly in the case of Example 2 simultaneously the ear
microphone 1 and the corrector Even if both vibration bigags 2 and 6 pick up the sound ti of the
reception sound of 7 or the mechanical vibration of the receiver 4 own fan, the generated voltage
is almost equal, so they cancel each other out. Accordingly, the voltage generated by the ear
microphone 1 does not reach the transmitter 9 to which the unconnected lead wires 8B and 8B
are connected. Therefore, no generation of noise is observed. That is, the transmitter 9 is
insensitive to the aforementioned voltage. On the other hand, when the wearer vocalizes, the
vibration pickup for voice 2 picks up the bone conduction voice signal to generate a voltage, but
the vibration pickup for correction 6 does not pick up the bone conduction 4fP signal. Does not
generate voltage. Therefore, the voltage generated at the vibration pickup 2 for voice is sent to
the transmitter 9 to be transmitted. The embodiments of the present invention are not limited to
the above-mentioned embodiments, but include the following embodiments. 0) A configuration in
which the receiver 4 is integrally connected to the ear microphone 1 and the corrector 5 via a
short sound conduit. In this case, the receiver 4 may be the same as in Example 1 (it may be a
single one, or may have a plurality of the same characteristics as in Example 2 (e.g. See FIG. And
its description, and FIG. 3 and its description in Japanese Utility Model Laid-Open Publication No.
51-121409. (O) In Example 1, a configuration in which the sound conduit 7 is extended in the
vicinity of the ear microphone 1 and the corrector 5 and the receiving sound is put in both 1 and
5 without contacting both 1.5 JP-A-52-40614 and JP-A-4952505.
e) A receiver 4 is attached to an ear muff covering an ear canal 1 to which an ear microphone 1
is attached, and a correction device 5 is attached to the ear muff (see Japanese Utility Model
Laid-Open No. 51-93612). A) The receiver 4 is a portable wireless device, and the wireless device
is disposed equidistantly or equidistantly to the ear microphone 1 and the correction device 5 so
as to listen to the reception sound lIi. (A) The ear microphone l used in the present invention has
an air leakage passage. In the present invention, when the voice activation controller is used in
combination, the controller may be interposed at the front stage of the transmitter 9, and the
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controller may have EndPage: 3. All the disadvantages of 0] and (2) can be eliminated. That is,
the present invention can increase the volume of the receiver because it can eliminate the
drawbacks of the above 0] and (2). Therefore, clear receiving sound can be heard even under
noise.
4. Brief description of the drawings Each of the drawings is a schematic view showing a
representative embodiment of the present invention, and FIG. 1 is an embodiment in the case
where the receiver is provided outside the ear microphone, FIG. Is an embodiment where the
handset is provided inside the ear microphone. In the figure, 1 is a vibration pickup shop ear
microphone, 2 is a vibration pickup for voice, 3 is a sound path, 4.4A, 4BFi, a receiver, 5 is a
corrector, 6 is a vibration pickup for correction, 7 is a sound conduit, 8A, 8B indicates a reed 諒,
9 indicates a transmitter. 11−EndPage: 4
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