SOUND PROCESSING APPARATUS, SOUND PROCESSING METHOD AND HEARING AID

Title:

SOUND PROCESSING APPARATUS, SOUND PROCESSING METHOD AND HEARING AID

Document Type and Number:

WIPO Patent Application WO/2011/048813

Kind Code:

A1

Abstract:

Provided are a sound processing apparatus, a sound processing method and a hearing aid whereby the voice of a speaker in the vicinity of the user can be efficiently emphasized independently of the distance between the disposed microphones. The sound processing apparatus uses output signals of the respective ones of a plurality of omnidirectional microphones to output a first directional signal, which forms the main axis of a directivity in a speaker direction, and a second directional signal, which forms the dead angle of the directivity in the speaker direction. The sound processing apparatus calculates individually calculates the level of the first directional signal and the level of the second directional signal and determines, based on the levels of the first and second directional signals, far and near relative to the speaker. The sound processing apparatus derives, in accordance with a result of that determination, a gain to be applied to the first directional signal, and uses the gain to control the level of the first directional signal.

Inventors:

TERADA YASUHIRO
YAMADA MAKI

Application Number:

PCT/JP2010/006231

Publication Date:

April 28, 2011

Filing Date:

October 20, 2010

Export Citation:

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Assignee:

PANASONIC CORP (JP)
TERADA YASUHIRO
YAMADA MAKI

International Classes:

G10L15/10; G10L21/0324; G10L25/21; G10L25/51; H04R1/40; H04R3/00; H04R25/00; G10L21/0216

Foreign References:

JP2004226656A	2004-08-12
JPH05207587A	1993-08-13
JPH09311696A	1997-12-02
JP2008312002A	2008-12-25
JP2010112996A	2010-05-20
JP2009036810A	2009-02-19
JP2009242602A	2009-10-22

Other References: