WO1998001956A3 - Microphone noise rejection system - Google Patents

Microphone noise rejection system Download PDF

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Publication number
WO1998001956A3
WO1998001956A3 PCT/US1997/013104 US9713104W WO9801956A3 WO 1998001956 A3 WO1998001956 A3 WO 1998001956A3 US 9713104 W US9713104 W US 9713104W WO 9801956 A3 WO9801956 A3 WO 9801956A3
Authority
WO
WIPO (PCT)
Prior art keywords
information signal
noise
delayed
signal
information
Prior art date
Application number
PCT/US1997/013104
Other languages
French (fr)
Other versions
WO1998001956A2 (en
Inventor
Frank X Linder
Original Assignee
Chiefs Voice Inc
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 Chiefs Voice Inc filed Critical Chiefs Voice Inc
Priority to EP97936234A priority Critical patent/EP0901726A4/en
Priority to AU38954/97A priority patent/AU719596B2/en
Priority to JP10505406A priority patent/JP2000514618A/en
Publication of WO1998001956A2 publication Critical patent/WO1998001956A2/en
Publication of WO1998001956A3 publication Critical patent/WO1998001956A3/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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/007—Protection circuits for transducers

Abstract

An apparatus (200) and method removes repetitive background noise from an information signal originating from a first source, such as a microphone (202). The noise originates from a second source, such as a siren (238), and is picked up by the first source along with the information. The noise signal has a characteristic frequency and associated period. The information signal is delayed for a selected period of time based on the characteristic frequency of the repetitive noise signal and forms a phase-shifted or delayed information signal. The delayed information signal is processed with a substantially non-delayed information signal and forms a processed information signal in which the information component is substantial and the noise component is negligible.
PCT/US1997/013104 1996-07-08 1997-07-01 Microphone noise rejection system WO1998001956A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP97936234A EP0901726A4 (en) 1996-07-08 1997-07-01 Microphone noise rejection system
AU38954/97A AU719596B2 (en) 1996-07-08 1997-07-01 Microphone noise rejection system
JP10505406A JP2000514618A (en) 1996-07-08 1997-07-01 Microphone noise removal system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US1586196P 1996-07-08 1996-07-08
US60/015,861 1996-07-08
US08/871,116 1997-06-09
US08/871,116 US6072881A (en) 1996-07-08 1997-06-09 Microphone noise rejection system

Publications (2)

Publication Number Publication Date
WO1998001956A2 WO1998001956A2 (en) 1998-01-15
WO1998001956A3 true WO1998001956A3 (en) 1998-05-07

Family

ID=26687889

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/013104 WO1998001956A2 (en) 1996-07-08 1997-07-01 Microphone noise rejection system

Country Status (6)

Country Link
US (1) US6072881A (en)
EP (1) EP0901726A4 (en)
JP (1) JP2000514618A (en)
AU (1) AU719596B2 (en)
CA (1) CA2259641A1 (en)
WO (1) WO1998001956A2 (en)

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EP1833163B1 (en) * 2004-07-20 2019-12-18 Harman Becker Automotive Systems GmbH Audio enhancement system and method
US8170221B2 (en) * 2005-03-21 2012-05-01 Harman Becker Automotive Systems Gmbh Audio enhancement system and method
EP1720249B1 (en) 2005-05-04 2009-07-15 Harman Becker Automotive Systems GmbH Audio enhancement system and method
US8345890B2 (en) * 2006-01-05 2013-01-01 Audience, Inc. System and method for utilizing inter-microphone level differences for speech enhancement
US8194880B2 (en) * 2006-01-30 2012-06-05 Audience, Inc. System and method for utilizing omni-directional microphones for speech enhancement
US8204252B1 (en) 2006-10-10 2012-06-19 Audience, Inc. System and method for providing close microphone adaptive array processing
US8744844B2 (en) * 2007-07-06 2014-06-03 Audience, Inc. System and method for adaptive intelligent noise suppression
US9185487B2 (en) * 2006-01-30 2015-11-10 Audience, Inc. System and method for providing noise suppression utilizing null processing noise subtraction
US8934641B2 (en) 2006-05-25 2015-01-13 Audience, Inc. Systems and methods for reconstructing decomposed audio signals
US8204253B1 (en) 2008-06-30 2012-06-19 Audience, Inc. Self calibration of audio device
US8949120B1 (en) 2006-05-25 2015-02-03 Audience, Inc. Adaptive noise cancelation
US8150065B2 (en) * 2006-05-25 2012-04-03 Audience, Inc. System and method for processing an audio signal
US8849231B1 (en) 2007-08-08 2014-09-30 Audience, Inc. System and method for adaptive power control
US8259926B1 (en) 2007-02-23 2012-09-04 Audience, Inc. System and method for 2-channel and 3-channel acoustic echo cancellation
US8189766B1 (en) 2007-07-26 2012-05-29 Audience, Inc. System and method for blind subband acoustic echo cancellation postfiltering
US8180064B1 (en) 2007-12-21 2012-05-15 Audience, Inc. System and method for providing voice equalization
US8143620B1 (en) 2007-12-21 2012-03-27 Audience, Inc. System and method for adaptive classification of audio sources
US8194882B2 (en) 2008-02-29 2012-06-05 Audience, Inc. System and method for providing single microphone noise suppression fallback
US8355511B2 (en) 2008-03-18 2013-01-15 Audience, Inc. System and method for envelope-based acoustic echo cancellation
US8774423B1 (en) 2008-06-30 2014-07-08 Audience, Inc. System and method for controlling adaptivity of signal modification using a phantom coefficient
US8521530B1 (en) 2008-06-30 2013-08-27 Audience, Inc. System and method for enhancing a monaural audio signal
EP2312579A1 (en) * 2009-10-15 2011-04-20 Honda Research Institute Europe GmbH Speech from noise separation with reference information
US9008329B1 (en) 2010-01-26 2015-04-14 Audience, Inc. Noise reduction using multi-feature cluster tracker
US8798290B1 (en) 2010-04-21 2014-08-05 Audience, Inc. Systems and methods for adaptive signal equalization
KR20130022549A (en) * 2011-08-25 2013-03-07 삼성전자주식회사 Canceling method for a microphone noise and portable device supporting the same
US8880444B2 (en) 2012-08-22 2014-11-04 Kodak Alaris Inc. Audio based control of equipment and systems
US9111547B2 (en) 2012-08-22 2015-08-18 Kodak Alaris Inc. Audio signal semantic concept classification method
US9640194B1 (en) 2012-10-04 2017-05-02 Knowles Electronics, Llc Noise suppression for speech processing based on machine-learning mask estimation
US20140112489A1 (en) * 2012-10-23 2014-04-24 Lectronix, Inc. Signal cancellation
US9264019B2 (en) * 2013-07-01 2016-02-16 Ess Technology, Inc. Suppression of fixed-pattern jitter using FIR filters
US9536540B2 (en) 2013-07-19 2017-01-03 Knowles Electronics, Llc Speech signal separation and synthesis based on auditory scene analysis and speech modeling
DE112015003945T5 (en) 2014-08-28 2017-05-11 Knowles Electronics, Llc Multi-source noise reduction
WO2018203391A1 (en) * 2017-05-02 2018-11-08 ヤマハ株式会社 Noise reduction device and audio conference system equipment using same, and method for controlling noise reduction device

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US5138664A (en) * 1989-03-25 1992-08-11 Sony Corporation Noise reducing device
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Also Published As

Publication number Publication date
AU719596B2 (en) 2000-05-11
JP2000514618A (en) 2000-10-31
WO1998001956A2 (en) 1998-01-15
EP0901726A4 (en) 1999-09-08
CA2259641A1 (en) 1998-01-15
AU3895497A (en) 1998-02-02
US6072881A (en) 2000-06-06
EP0901726A2 (en) 1999-03-17

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