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 methodInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111052766B (en) * | 2017-09-07 | 2021-07-27 | 三菱电机株式会社 | Noise removing device and noise removing 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)
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 |
EP1665881B1 (en) * | 2003-09-19 | 2008-07-23 | Widex A/S | A method for controlling the directionality of the sound receiving characteristic of a hearing aid and a signal processing apparatus for a hearing aid with a controllable directional characteristic |
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 |
-
2015
- 2015-10-01 WO PCT/JP2015/077928 patent/WO2017056288A1/en active Application Filing
- 2015-10-30 TW TW104135741A patent/TWI586183B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TWI586183B (en) | 2017-06-01 |
WO2017056288A1 (en) | 2017-04-06 |
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Legal Events
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MM4A | Annulment or lapse of patent due to non-payment of fees |