VOICE INFORMATION PROCESSING DEVICE, AND WIRING SYSTEM USING THE SAME DEVICE

WIPO Patent Application WO/2007/060753

A1

Provided are a small-sized voice information processing device excellent in a howling preventing effect, and a wiring system using the device and excellent in a function expandability and an exchanging feasibility. This processing device comprises a speaker, a first microphone arranged to confront the diaphragm of the speaker, a second microphone arranged on the outer side of the outer periphery of the diaphragm of the speaker, and a signal processing unit for eliminating that output voice component of the speaker which has migrated into the output of the second microphone, by using the output of the first microphone. The processing device finds its especially preferable use in a wiring system for transmitting information and electric power between plural portions of a building.

KITADA KOUSAKU (JP)
YOSHIDA KEIICHI (JP)
MITSUTAKE YOSHIO (JP)
ARIKAWA YASUSHI (JP)
TAKEYAMA HIROAKI (JP)
OTA TOMOHIRO (JP)
KAWADA HIROSHI (JP)
KIMOTO SHINYA (JP)
NAKATA MANABU (JP)
HASEGAWA YUYA (JP)

PCT/JP2006/301221

May 31, 2007

January 26, 2006

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MATSUSHITA ELECTRIC WORKS LTD (JP)
KITADA KOUSAKU (JP)
YOSHIDA KEIICHI (JP)
MITSUTAKE YOSHIO (JP)
ARIKAWA YASUSHI (JP)
TAKEYAMA HIROAKI (JP)
OTA TOMOHIRO (JP)
KAWADA HIROSHI (JP)
KIMOTO SHINYA (JP)
NAKATA MANABU (JP)
HASEGAWA YUYA (JP)

H04M9/08; H04M1/02

JPH1141342A	1999-02-12
JPS63208342A	1988-08-29
JPH01272355A	1989-10-31
JPS63269850A	1988-11-08
JPS5860331A	1983-04-09

NISHIKAWA, Yoshikiyo et al. (Umeda-Daiichiseimei Bldg. 5F N2-17, Umeda 1-chome, Kita-k, Osaka-shi Osaka 01, JP)

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