JPH04281649A - Talking device - Google Patents

Abstract

PURPOSE:To offer the small sized talking device able to be contained in a pocket in which a receiver and a transmitter are integrated, only a talker voice is detected even when the talking device is used under an environment of large surrounding sound so as to prevent the external sound from being sent to the talking party. CONSTITUTION:The inside of a case 6 is provided with a microphone 5 detecting vibration caused on each organization of a head of a human body due to utterance of a talker and having a pressure adjustment hole, a vibration proof means 7 with respect to the microphone 5, an air chamber 9 located on the surface of the microphone 5 and ensuring the cavity with a surrounding seal 8 abutting on a face, an equilzer circuit 10 processing an electric signal sent from the microphone 5, and a sounder. Thus, the device is most suited to be used under the circumference that an external sound is large or an external sound undesired to be mixed is in existence, and the entire device is made small down to a size portable in a pocket and the device is convenient to carry.

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] The present invention is a communication device that integrates a receiver and a transmitter, and is suitable for use in places where external sounds are loud or where there are external sounds that should not be mixed in. The present invention relates to a small-sized communication device.

0002

2. Description of the Related Art In conventional communication devices, the voice of the speaker is detected using a microphone or the like, but as a result, external sounds are detected at the same time as the voice of the speaker.
There was a problem in that even sounds that you did not want to send to the other party were sent.

0003

[Problems to be Solved by the Invention] Conventional telephone devices include:
There were problems as mentioned above. Therefore, the present invention has been developed to detect only the voice of the speaker even when using the communication device in an environment with loud external sounds, so that external sounds are not transmitted to the other party, and which is compact and can be stored in a pocket. The task is to provide equipment.

0004

[Means for Solving the Problems] The present invention is a communication device in which a receiver and a transmitter are integrated, and the device detects vibrations generated in various tissues of the human head due to the utterance of a speaker within the housing. ,
a microphone having a pressure adjustment hole; a vibration isolating means for the microphone; an air chamber having a cavity secured by a wall-like seal located on the surface side of the microphone and in contact with the face; The above-mentioned problem has been solved with a communication device characterized by installing an equalizer circuit that processes electrical signals and a sounding body.

[0005]

[Operation] By using a microphone having a pressure adjustment hole as the vibration detection means, it is possible to reduce modulation that occurs in the microphone due to changes in air chamber pressure. As a result, the volume of the air chamber can be made sufficiently small, so that the entire communication device can be downsized to a size that can be stored in a pocket.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows the configuration of an embodiment of the present invention.
The telephone communication device is roughly divided into a receiver part A and a transmitter part B. The receiver part A is used by placing it on the ear, and the transmitter part B is used by placing it on the part of the cheek near the ear. 5 is a microphone as a vibration detection means, as shown in FIG.
A pressure adjustment hole 11 of an appropriate size is bored. The microphone 5 is isolated by a vibration isolator 7 so that vibrations transmitted through the communication device housing 6 do not directly reach the microphone 5. Isolation may be achieved instead of using the vibration isolator 7, or by selecting the material of the casing 6 itself or applying damping material such as putty to the casing 6.

A seal 8 is provided between the human head and the receiver to prevent sound from entering from outside, and an air chamber 9 is formed inside the seal 8. Microphone 5 detects sound waves generated by vibrations of skin tissue. The internal pressure of the air chamber 9 changes due to the vibration of the skin, but when a normal microphone is used, the high range of the audio signal detected due to this change in internal pressure will be modulated by the low range.

[0008] The frequency characteristics of the voice obtained by skin vibration are markedly attenuated in the high range, so it is necessary to emphasize the high range with the equalizer circuit 10. However, if the high range is modulated by the low range, , the voice becomes unclear or has a strong characteristic. Therefore, the volume of the air chamber 9 must be large enough to prevent the microphone 5 from being modulated by changes in internal pressure.

However, in the present invention, the pressure adjustment hole 11
Since the microphone 5 equipped with the air chamber 9 is used, there is no change in the internal pressure inside the air chamber 9, so the volume of the air chamber 9 can be reduced to about several cc, and as a result, the entire device can be downsized. It is. In addition, in Figure 2, 1
2 is a shield case, 13 is a microphone case, 14 is a film, 15 is a spacer, 16 is a fixed electrode, 17 is an electric wire,
18 is a terminal board, and 19 is solder.

0010

[Effects of the Invention] The present invention is as described above, and is suitable for use in places where external noise is loud or in situations where there is external sound that you do not want mixed in, and can be stored as a whole in a pocket. It can be made as small as possible, making it convenient to carry.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing a configuration example of a telephone communication device to which the present invention is applied.

FIG. 2 is a longitudinal sectional view of a microphone used in the present invention.

[Explanation of symbols]

5. Microphone 6 Housing 7. Vibration isolator 8 Seal 9 Air chamber 10 Equalizer circuit 11 Pressure adjustment hole

Claims (1)

[Claims] [Claim 1] A communication device in which a receiver and a transmitter are integrated, which includes a microphone having a pressure adjustment hole in the housing for detecting vibrations generated in various tissues of the human head due to the utterance of the speaker. , a vibration isolating means for the microphone, an air chamber having a cavity secured by a wall-like seal located on the front side of the microphone and in contact with the face, and an equalizer circuit for processing electrical signals sent from the microphone. and a sounding body.