JPH10191484A - Microphone device - Google Patents

Abstract

(57) [Summary] [Problem] To block external noise and collect a user's utterance with a good S / N ratio. SOLUTION: A microphone device 1 according to the present invention has a similar shape to a closed earphone device as a whole, and a tube 11 having one end inserted into an external auditory canal 21 of a user 2, and the other end of the tube 11 And a electromechanical converter 12 provided on the side. When the tube 11 is inserted into the ear canal 21 of the user 2, the periphery of the tube 11 is in close contact with the inner surface of the ear canal 21, and the space 23 is sealed by the tube 11, the ear canal 21 and the eardrum 22. Is formed. Therefore, when the user 2 utters in this state, this utterance is generated in the nasal cavity 24.
Is transmitted to the opposite side of the space 23 of the eardrum 22 and the vocalization causes the eardrum 22 to vibrate. And this eardrum 2
The vibration of 2 is transmitted to the electromechanical conversion unit 12 of the microphone device 1 through the closed space 23, and the sound of the user 2 is collected by the electromechanical conversion unit 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microphone device suitable for use in, for example, a communication device used in a noisy place.

[0002]

2. Description of the Related Art For example, a user's utterance in noise is
As a method of transmitting the / N ratio well, for example, conventionally, a user's utterance is extracted and transmitted using a band-pass filter or the like for removing external noise. However, this method cannot remove noise included in the voice band, and cannot improve the S / N ratio much.

[0003] On the other hand, a mechanical-electrical conversion unit of a microphone device is strongly pressed around a user's neck to directly capture vibration of a throat caused by the user's voice. However, in this method, since vibration is transmitted through muscles around the neck and the like, the frequency band is limited, resulting in a so-called muffled sound with degraded sound quality.

[0004] Further, there is also used means for incorporating a microphone device in a respirator such as a diving equipment to block external noise and improve the S / N ratio. The sound was easy to be muffled.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and the problem to be solved is to transmit, for example, a user's sound pickup and utterance in noise. In such a case, the conventional device cannot collect the utterance of the user with a sufficient S / N ratio and cannot transmit the utterance of the user with good sound quality.

[0006]

SUMMARY OF THE INVENTION Therefore, in the present invention, a tube and a electromechanical converter are provided. The tube is inserted into an ear canal of the user so that a user's voice is picked up. According to this, the external noise is satisfactorily cut off, and the utterance of the user can be picked up with good sound quality and with a good S / N ratio.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS That is, according to the present invention, a tubular body having one end inserted into an ear canal of a user and a electromechanical converter provided at the other end of the tubular body are provided. The utterance of the user is collected while being inserted into the ear canal. Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram of an example showing a state of use of a communication device to which a microphone device according to the present invention is applied.

In FIG. 1, a microphone device 1 according to the present invention has the same shape as a closed type earphone device as a whole, and a tube 11 into which one end is inserted into an external auditory canal 21 of a user 2, and this tube 11 and a electromechanical converter 12 provided on the other end side. And this tube 11
Is inserted into the external auditory canal 21 of the user 2, the tube 1
1 is in close contact with the inner surface of the external auditory canal 21,
, The external auditory canal 21 and the eardrum 22 form a closed space 23.

Therefore, when the user 2 utters in this state, the utterance is transmitted through the nasal cavity 24 to the space 23 of the eardrum 22 opposite to the space 23, and the eardrum 22 is vibrated by the utterance. The vibration of the eardrum 22 is generated in the closed space 2.
The signal is transmitted to the electromechanical converter 12 of the microphone device 1 through the microphone 3, and the utterance of the user 2 is collected by the electromechanical converter 12.

That is, in this microphone device 1, the electromechanical converter 12 is connected to the external auditory canal
And the eardrum 22 and open only to the space 23 sealed. Therefore, in this case, the external noise
Most of the user 2 has a very good S / N ratio except for a small one entering through the nostrils 26.
Can be picked up.

The audio signal picked up by the microphone device 1 is supplied to the microphone terminal 31 of the communication device 3 through the signal line 13. Further, the audio signal supplied to the microphone terminal 31 is supplied to the main circuit 33 of the communication device 3 through the microphone amplifier 32,
For example, transmission is performed.

The audio signal received by the main circuit 33 is transmitted through an earphone amplifier 34 to an earphone terminal 35.
Is taken out. The audio signal extracted to the earphone terminal 35 is transmitted through the signal line 41 to, for example, the earphone device 4 inserted into the ear opposite to the microphone device 1.
Supplied to

[0013] Therefore, in this device, the apparatus comprises a tube and a electromechanical converter, and the tube is inserted into the ear canal of the user to pick up the utterance of the user so that external noise is well cut off. , The utterance of the user with good sound quality S /
Sound can be collected with a good N ratio.

Thus, for example, when collecting and transmitting a user's utterance in noise, the conventional apparatus cannot collect the user's utterance with a sufficient S / N ratio. According to the present invention, external noise can be satisfactorily cut off, although the utterance of the user could not be transmitted with good sound quality,
The utterance of the user can be collected with a good S / N ratio, and transmission can be performed with good sound quality.

For example, as described above, by inserting the microphone device 1 of the present invention into one ear and inserting the earphone device 4 into the opposite ear, the user can utter without blocking both hands of the user. Can be picked up and transmission of communication can be performed, and reception can be performed with the opposite ear. In this case, it is possible to collect the utterance of the user with the microphone device 1 with a good S / N ratio and good sound quality.

Note that the microphone device 1 of the present invention is not limited to the above-described communication device, and can be applied to a case where a user performs memorandum recording or the like by utterance. That is, in that case, a recording device is used instead of the communication device 3 described above. In that case, the recorded output can be monitored by supplying the above-mentioned earphone device 4 with the playback output of the recording device.

Further, the microphone device of the present invention is suitable for use in a mobile phone, a call in water, a call in a place where noise is high, such as a pilot radio or a radio in a construction site.

Thus, according to the above-described microphone device, the microphone is constituted by the tube inserted into the ear canal of the user at one end and the electromechanical converter provided at the other end of the tube. By picking up the utterance of the user while being inserted into the ear canal, external noise can be satisfactorily cut off, and the utterance of the user can be picked up with good sound quality and a good S / N ratio.

[0019]

According to the present invention, the external noise is improved by collecting a user's voice while the tube is inserted into the user's external auditory canal, comprising the tube and the electromechanical converter. The voice of the user can be picked up with good sound quality and a good S / N ratio.

As a result, for example, in the case of collecting and transmitting a user's utterance in noise, the conventional apparatus cannot collect the user's utterance with a sufficient S / N ratio. According to the present invention, external noise can be satisfactorily cut off, although the utterance of the user could not be transmitted with good sound quality,
The utterance of the user can be collected with a good S / N ratio and can be transmitted with good sound quality.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an example showing a state of use of a communication device to which a microphone device of the present invention is applied.

[Explanation of symbols]

Reference Signs List 1 microphone device, 11 tube, 12 electromechanical converter, 13 signal line, 2 user, 21 ear canal, 22
Eardrum, 23 space, 24 nasal cavity, 25 mouth, 26 nostrils, 3 communication equipment, 31 microphone terminal, 32
Microphone amplifier, 33 body circuit, 34 earphone amplifier, 35 earphone terminal, 4 earphone devices, 41
Signal line

Claims (2)

[Claims] 1. A tube, one end of which is inserted into an ear canal of a user, and a electromechanical converter provided at the other end of the tube, wherein the tube is inserted into the ear canal of the user. A microphone device which picks up a user's voice in a state. 2. The microphone device according to claim 1, wherein the tube is inserted into one ear canal of a user, and a tube of an earphone device is inserted into the other ear canal, and these signal lines are connected to a communication device. A microphone device which is connected to perform transmission and reception of communication.