Transmitting/receiving apparatus and communication system using

Details Transmitting/receiving apparatus and communication system using Transmitting/receiving apparatus and communication system using

1996-04-04

1998-05-26

Le, Huyen D.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381151, 379430, H04R 2500

Patent

active

057579342

ABSTRACT:
A transmitting/receiving apparatus to be used as fitted into an external auditory meatus is provided which ensures less inclusion of noise and less possibility of howling and allows the user to hear the voice of the communication partner clearly, and which comprises: a bone-conduction microphone (2) and a speaker (3) which are housed in a single casing (4), the casing (4) having a distal end portion to assume a distal position in the external auditory meatus, in which distal end portion the bone-conduction microphone (2) is disposed; a vibration-absorptive foamed material (6) surrounding the bone-conduction microphone (2); a hollow portion (2) provided between the foamed material (7) and the speaker (3) within the casing (4); and a through-hole (8) extending through a wall portion of the casing (4) at a location adjacent the distal end portion.

REFERENCES:
patent: 3665514 (1972-05-01), Durand
patent: 4588867 (1986-05-01), Konomi
patent: 5280524 (1994-01-01), Norris
patent: 5295193 (1994-03-01), Ono

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