TW201714458A - Sound-signal processing apparatus, sound processing method, monitoring apparatus, and monitoring method - Google Patents

Sound-signal processing apparatus, sound processing method, monitoring apparatus, and monitoring method

Info

Publication number
TW201714458A
TW201714458A TW104135741A TW104135741A TW201714458A TW 201714458 A TW201714458 A TW 201714458A TW 104135741 A TW104135741 A TW 104135741A TW 104135741 A TW104135741 A TW 104135741A TW 201714458 A TW201714458 A TW 201714458A
Authority
TW
Taiwan
Prior art keywords
sound
signal processing
monitoring
microphones
processing unit
Prior art date
Application number
TW104135741A
Other languages
Chinese (zh)
Other versions
TWI586183B (en
Inventor
Nobuaki Tanaka
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of TW201714458A publication Critical patent/TW201714458A/en
Application granted granted Critical
Publication of TWI586183B publication Critical patent/TWI586183B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

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.
TW104135741A 2015-10-01 2015-10-30 An audio signal processing device, a sound processing method, a monitoring device, and a monitoring method TWI586183B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/077928 WO2017056288A1 (en) 2015-10-01 2015-10-01 Sound-signal processing apparatus, sound processing method, monitoring apparatus, and monitoring method

Publications (2)

Publication Number Publication Date
TW201714458A true TW201714458A (en) 2017-04-16
TWI586183B TWI586183B (en) 2017-06-01

Family

ID=58422830

Family Applications (1)

Application Number Title Priority Date Filing Date
TW104135741A TWI586183B (en) 2015-10-01 2015-10-30 An audio signal processing device, a sound processing method, a monitoring device, and a monitoring method

Country Status (2)

Country Link
TW (1) TWI586183B (en)
WO (1) WO2017056288A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112017007800T5 (en) * 2017-09-07 2020-06-25 Mitsubishi Electric Corporation Noise elimination device and noise elimination method
US11694705B2 (en) 2018-07-20 2023-07-04 Sony Interactive Entertainment Inc. Sound signal processing system apparatus for avoiding adverse effects on speech recognition

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6879952B2 (en) * 2000-04-26 2005-04-12 Microsoft Corporation Sound source separation using convolutional mixing and a priori sound source knowledge
CN100392723C (en) * 2002-12-11 2008-06-04 索夫塔马克斯公司 System and method for speech processing using independent component analysis under stability restraints
DE60322447D1 (en) * 2003-09-19 2008-09-04 Widex As METHOD FOR CONTROLLING THE TRACE CHARACTERISTICS OF A HEARING DEVICE WITH CONTROLLABLE TRACE CHARACTERISTICS
CN1809105B (en) * 2006-01-13 2010-05-12 北京中星微电子有限公司 Dual-microphone speech enhancement method and system applicable to mini-type mobile communication devices
JP5375400B2 (en) * 2009-07-22 2013-12-25 ソニー株式会社 Audio processing apparatus, audio processing method and program
KR101248971B1 (en) * 2011-05-26 2013-04-09 주식회사 마이티웍스 Signal separation system using directionality microphone array and providing method thereof
CN102522082B (en) * 2011-12-27 2013-07-10 重庆大学 Recognizing and locating method for abnormal sound in public places
CN102752691A (en) * 2012-07-30 2012-10-24 郝立 Audio processing technology, 3D (three dimensional) virtual sound and applications of 3D virtual sound
JP6206003B2 (en) * 2013-08-30 2017-10-04 沖電気工業株式会社 Sound source separation device, sound source separation program, sound collection device, and sound collection program
US20160327522A1 (en) * 2014-02-17 2016-11-10 Mitsubishi Electric Corporation Abnormal sound detection device, abnormal processing-machine-sound detection system, and abnormal sound detection method

Also Published As

Publication number Publication date
WO2017056288A1 (en) 2017-04-06
TWI586183B (en) 2017-06-01

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Legal Events

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