JPS583439B2 - Transceiver device using ear microphone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a telephone transmitting/receiving device using a vibration pickup type ear microphone.

More specifically, in a transmitting/receiving device that combines an ear microphone and a handset so that it is possible to send and receive calls with one ear, it is possible to prevent noise input due to sound waves of the receiving sound or vibrations of the handset itself, and to prevent howling. This invention relates to a transmitting/receiving device that prevents occurrence of such occurrence.

One of the inventors of the present invention developed a vibration pickup type ear microphone that picks up bone conduction audio signals (vibrations) transmitted to the external auditory canal wall and converts them into electrical signals.
This was previously proposed in Publication No. 763, etc.

Also, concerning a transmitting and receiving device which can transmit and receive calls by combining the vibrating pickup type ear microphone and a receiver, Japanese Utility Model Application No. 51-117511, No. 51-121409, and No. 52-40614 disclose and No. 52-40615, etc.

As described in the above-mentioned Japanese Utility Model Application Publication No. Sho 52-40615, a telephone transmitting/receiving device using such a vibration pickup type ear microphone may be configured such that the ear microphone is attached to one ear canal and the receiver is attached to the other ear canal. It is possible, but the above-mentioned Utility Model Application No. 117511/1983
As stated in Publications No. 121409 and No. 52-40614, or as described in Japanese Utility Model Publication No. 53-44428, it is possible to pass the receiving sound of a telephone receiver through the same ear canal as the one in which the ear microphone is attached. desirable.

However, in the former configuration, both ears are closed, but in the latter configuration, at least one ear canal can be left open, allowing not only the sound received from the handset, but also the ear canal to be closed. This is because it is possible to have direct conversations with people around you, and you can also hear calls for caution in the event of a fire, etc., thereby ensuring safety.

However, although this latter configuration is beneficial in terms of ensuring the safety described above, it has the following drawbacks.

(1) When the output level of the receiver is increased, vibrations caused by the sound waves of the receiver sound or mechanical vibrations of the receiver itself (if the receiver is incorporated into an ear microphone).

) may cause howling.

(2) Voice-activated controllers (voice-controlled transmitter, etc.)

), when automatically switching between transmitting and receiving based on the output of the ear microphone, the sound waves of the receiving sound or the mechanical vibrations of the receiver itself may enter the ear microphone, causing the voice-activated controller to malfunction.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a telephone transmitting/receiving device that combines a vibrating pick amplifier type ear microphone and a telephone receiver, and is capable of transmitting and receiving telephone calls using at least one ear. The purpose of the present invention is to provide a transmitting/receiving device that eliminates the need for communication.

The details of the present invention, which achieves the above objects and other objects described below, will be explained below based on representative embodiments shown in the drawings.

Each figure is a schematic diagram showing a typical embodiment of the present invention, and FIG. 1 shows an example in which the handset is installed outside the ear microphone, and FIG. 2 shows an example in which the handset is installed inside the ear microphone. This is an example of a case where it is provided.

In the figure, 1 is a vibration pickup type ear microphone having a vibration pickup 2 such as a piezoelectric element that picks up bone conduction audio signals from the ear canal wall, and a sound path 3 that transmits received sound to the ear canal, and 4 is an ear canal in which the ear microphone 1 is attached. This figure shows a receiver that transmits incoming sound through the same ear canal as the ear canal.

Reference numeral 5 denotes a vibration pickup 2 of the ear microphone (hereinafter referred to as an audio vibration pickup).

), the device preferably has a vibration pickup 6 with the same or substantially the same frequency characteristics as that of It is installed on hats, shoulders, waist, etc.

In the present invention, the ear microphone 1 and the corrector 5 are provided with an audio vibration pickup 2 and a corrector vibration pickup 6 (hereinafter referred to as a correction vibration pickup).

), the received sound from the receiver 4 is inserted so that the acoustic conditions are the same.

Further, the vibrating pink-ups 2 and 6 are electrically connected to each other so that voltages generated by the sound waves of the receiving sound or the mechanical vibrations of the receiver itself cancel each other out.

Further, the present invention will be explained in detail for each example.

Example 1 This example shows the case where the handset 4 is provided outside the ear microphone 1 and the straightener 5, and the handset 4 communicates with the ear microphone 1 and the straightener 5 via a sound conduit that carries its output sound. A specific example is shown in FIG.

In this embodiment, a sound conduit (an elastic tube such as a rubber tube is preferred).

) 7 are connected at one end to the ear microphone 1 and the corrector 5 so as to be acoustically equidistant, and the other end is connected to the receiver 4.

Also, one of the same polar comrades (minus comrades or positive comrades) of both vibration pink ups 2 and 6.

) are electrically connected by connecting one lead wire 8A, and the other lead wires 8B, 8B (the side that is not connected).

) is led to the transmitter 9.

Embodiment 2 This embodiment is an example in which the receiver 4 is provided inside the ear microphone 1 and the corrector 5, and a specific example thereof is shown in FIG.

In this embodiment, receivers 4A and 4B having the same characteristics are installed in ear microphone 1 and corrector 5 so that both vibration pickups 2 and 6 have the same acoustic conditions.

Further, as in the first embodiment, one of the two vibrating pickups 2 and 6 having the same polarity is electrically connected to each other.

The effects of the present invention are as follows.

In the case of the first embodiment, the output of the handset 4 passes through the sound conduit 7 and reaches the ear microphone 1 and the corrector 5 at the same time,
Further, in the case of the second embodiment, the ear microphone 1 and the corrector 5 are connected directly to each other at the same time, and both the vibration pickups 2 and 6 are connected to each other.
However, even if the sound waves of the receiving sound or the mechanical vibrations of the receiver 4 itself are picked up, the generated voltages are approximately the same, so they cancel each other out, and the transmitter connecting the unconnected lead wires 8B and 8B The voltage generated by the ear microphone 1 does not reach the speaker 9.

Therefore, no noise is observed.

In other words, the transmitter 9 is insensitive to the voltage mentioned above.

On the other hand, when the wearer's own voice is uttered, the audio vibration pickup 2 picks up the bone conduction audio signal and generates a voltage, but the orthodontic vibration pickup 6 does not pick up the bone conduction audio signal. Therefore, no voltage is generated.

Therefore, the voltage generated in the audio vibration pickup 2 is sent to the transmitter 9. The call will then be sent.

Embodiments of the present invention are not limited to the above embodiments, but include the following embodiments.

(a) 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 a single receiver as in the first embodiment, or may be a plurality of receivers with the same characteristics as in the second embodiment (for example, FIG. 1 of Japanese Utility Model Publication No. 53-49607 Please refer to the explanation and FIG. 3 of Utility Model Application Publication No. 51-121409 and its explanation.

). (b) In the first embodiment, the sound conduit 7 is extended to the vicinity of the ear microphone 1 and the corrector 5, and both the ear microphone 1 and the corrector 5 are
A configuration in which the receiving sound is put into both 1 and 5 without making contact with 5
See Publication No. 52505.

). (c) A configuration in which the receiver 4 is attached to an earmuff that covers the ear canal into which the ear microphone 1 is attached, and the corrector 5 is attached to the earmuff (Utility Model No. 51-936
See Publication No. 12.

). (d) A configuration in which the receiver 4 is a portable radio device, and the radio device is placed equidistantly close to or equidistant from the ear microphone 1 and the corrector 5 to listen to the received sound.

(E) The ear microphone 1 used in the present invention has an air leak passage.

In addition, in the case where a voice-activated controller is used in conjunction with the present invention, the controller may be provided upstream of the transmitter 9.

Since the present invention has the configuration and operation described above,
) and (2) can all be eliminated.

That is, since the present invention can eliminate the drawbacks mentioned above and (2), it is possible to increase the volume of the receiver.

Therefore, it is possible to clearly hear the received voice even in noisy conditions.

[Brief explanation of drawings]

Each figure is a schematic diagram showing a typical embodiment of the present invention, and FIG. 1 shows an example in which the handset is installed outside the ear microphone, and FIG. 2 shows an example in which the handset is installed inside the ear microphone. This is an example of a case where it is provided. In the figure, 1 is a vibration pickup type ear microphone, 2
is the audio vibration pickup, 3 is the sound path, 4, 4A, 4B
is a receiver, 5 is a corrector, 6 is a vibration pickup for correction,
7 is a sound conduit, 8A and 8B are lead wires, and 9 is a transmitter.

Claims (1)

[Scope of Claims] 1. A vibration pickup ear microphone having a vibration pickup that picks up bone conduction audio signals from the wall of the external auditory canal and a sound path that transmits received sound to the external auditory canal;
A corrector having a vibration pickup having almost the same frequency characteristics as the vibration pickup of the ear microphone, in a speech transmitting and receiving device using an ear microphone, which is comprised of a combination of an ear canal in which the ear microphone is attached and a receiver that transmits incoming sound through the same ear canal. is installed so as not to pick up bone conduction audio signals, and inputting sound from a receiver to the corrector and the ear microphone so that the acoustic conditions are the same for both vibration pickups, A transmitting/receiving device using an ear microphone, characterized in that both the vibration pickups are electrically connected to each other so as to cancel out voltages generated by the sound waves of the received voice or the mechanical vibrations of the handset itself. 2. Claim 1, characterized in that the receiver is provided outside the ear microphone and the corrector.
A transmitting/receiving device using the ear microphone described in Section 1. 3. A transmitting and receiving device using an ear microphone according to claim 2, wherein the receiver is connected to the ear microphone and the corrector via a sound conduit through which the output sound of the receiver passes. 4. A transmitting and receiving device using an ear microphone according to claim 3, wherein the receiver communicates with the ear microphone and the corrector via a sound conduit so as to be acoustically equidistant. 5 Claim 1, characterized in that the receiver is provided inside the ear microphone and the corrector.
A transmitting/receiving device using the ear microphone described in Section 1.