SOUND COLLECTING MICROPHONE SYSTEM

Japanese Patent JP2012253754

A

To provide a sound collecting microphone system for multi-channel.

In the sound collecting microphone system of the present invention, a main microphone element Mn is installed in each partitioning space Hn for dividing a sound collecting space, and an auxiliary microphone element Pm is preferably installed in addition. A sound collecting signal processor 10b provided to the sound collecting microphone system of the present invention includes a high-pass filter 201 and a low-pass filter 202 which perform band separation at a predetermined frequency corresponding to a shield frequency that is determined by the partitioning space Hn for the output of the main microphone element Mn, and extract output components of the band of the predetermined frequency or higher and the band of the predetermined frequency or lower respectively, a low-pass filter 203 for extracting an output component of the band of the predetermined frequency or lower in the auxiliary microphone element Pm, and directivity composition filter processing parts 30, 40-n which composite the extracted output components and generate a sound collecting output of wide band and narrow directivity for each partitioning space Hn.

WO/2020/026864	INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD, AND PROGRAM
JP5688030	3D sound field coding and optimal reproduction methods and equipment
JP2011234213	SOUND SOURCE DIRECTION ESTIMATION APPARATUS

ONO KAZUO
ANDO AKIO
HAMAZAKI KIMIO

JP2012105807A

December 20, 2012

May 07, 2012

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NIPPON HOSO KYOKAI

H04R3/00; H04R5/027

JP2010245737A	2010-10-28
JPH0698391A	1994-04-08
JP2006270903A	2006-10-05

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