Title:
SOUND-SIGNAL PROCESSING APPARATUS, SOUND PROCESSING METHOD, MONITORING APPARATUS, AND MONITORING METHOD
Document Type and Number:
WIPO Patent Application WO/2017/056288
Kind Code:
A1
Abstract:
A sound-signal processing apparatus according to the present invention is provided with: a first signal processing unit that performs linear processing on sound signals of sound waves arriving at a plurality of microphones, to emphasize the sound signals of the sound waves arriving at the plurality of microphones from a first direction that is a target direction and from a second direction that is opposite to the first direction; and a second signal processing unit that performs nonlinear processing on the sound signals emphasized by the first signal processing unit, to emphasize the sound signals of the sound waves arriving at the plurality of microphones from the first direction. Thus, sharp directivity can be obtained in the target direction while suppressing degradation of sound quality.
Inventors:
TANAKA NOBUAKI (JP)
Application Number:
PCT/JP2015/077928
Publication Date:
April 06, 2017
Filing Date:
October 01, 2015
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H04R3/00; H04R1/40
Foreign References:
| JP2014518053A | 2014-07-24 | |||
| JP2015050558A | 2015-03-16 |
Other References:
NOBUAKI TANAKA ET AL.: "Zone Kyochogata Beam Former no Kochiku", THE ACOUSTICAL SOCIETY OF JAPAN (ASJ) 2009 NEN SHUKI KENKYU HAPPYOKAI KOEN RONBUNSHU, 17 September 2009 (2009-09-17), pages 153, 154
Attorney, Agent or Firm:
INABA, Tadahiko et al. (JP)
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