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Title:
EAR SET TYPE TRANSCEIVER
Document Type and Number:
Japanese Patent JPH0630490
Kind Code:
A
Abstract:

PURPOSE: To make it possible to extend a sound band from a low band up to a high band, to transmit sound with high sound quality and to comfortably use this ear set type transceiver even in noise by detecting air sound oscillation obtained from a user's mouth and bone conductive sound oscillation by respective sensors, adding these detected results to obtain a synthetic signal and optionally adjusting the mixing ratio of both the oscillation.

CONSTITUTION: When an inserting body 1 is loaded into the inside of a listener's external auditory miatus and the listener speaks, bone conductive sound oscillation from the exernal auditory miatus wall is transmitted to the inserting body 1 and then transmitted to a pipe case 5c. Namely the electrolet of a microphone 5d is oscillated to generate an electric signal and air sound is entered from the hole 5c1 of the pipe case 5c into the case 5c through an air room by an aperture formed between an external skin 12 and an external body 7 to oscillate the electrolet by the air sound oscillation. Since the sensitivity of high frequency oscillation due to the air sound oscillation is low, the generation of howling at the high frequency can be prevented, and since high frequency is applied to a signal outputted from the microphone 5d, voice can easily be listened.


Inventors:
Motoi, Katsuo
Yamaguchi, Noboru
Application Number:
JP1992000144987
Publication Date:
February 04, 1994
Filing Date:
May 12, 1992
Export Citation:
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Assignee:
MOTOI KATSUO
YAMAGUCHI NOBORU
International Classes:
H04M1/05; H04R1/00; (IPC1-7): H04R1/00; H04M1/05; H04R1/00
Domestic Patent References:
JPH0468799A1992-03-04
JP61206393B
Attorney, Agent or Firm:
橘 哲男



 
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