WO1999027522A3 - Audio processing arrangement with multiple sources - Google Patents

Audio processing arrangement with multiple sources Download PDF

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Publication number
WO1999027522A3
WO1999027522A3 PCT/IB1998/001851 IB9801851W WO9927522A3 WO 1999027522 A3 WO1999027522 A3 WO 1999027522A3 IB 9801851 W IB9801851 W IB 9801851W WO 9927522 A3 WO9927522 A3 WO 9927522A3
Authority
WO
WIPO (PCT)
Prior art keywords
audio processing
processing arrangement
signal
adder
multiple sources
Prior art date
Application number
PCT/IB1998/001851
Other languages
French (fr)
Other versions
WO1999027522A2 (en
Inventor
Harm Jan Willem Belt
Cornelis Pieter Janse
Original Assignee
Koninkl Philips Electronics Nv
Philips Svenska Ab
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 Koninkl Philips Electronics Nv, Philips Svenska Ab filed Critical Koninkl Philips Electronics Nv
Priority to JP52802099A priority Critical patent/JP4372232B2/en
Priority to KR1019997006620A priority patent/KR100584491B1/en
Priority to EP98952964A priority patent/EP0954850B1/en
Priority to DE69822128T priority patent/DE69822128T2/en
Publication of WO1999027522A2 publication Critical patent/WO1999027522A2/en
Publication of WO1999027522A3 publication Critical patent/WO1999027522A3/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0211—Frequency selective networks using specific transformation algorithms, e.g. WALSH functions, Fermat transforms, Mersenne transforms, polynomial transforms, Hilbert transforms
    • H03H17/0213—Frequency domain filters using Fourier transforms
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0223—Computation saving measures; Accelerating measures
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0294—Variable filters; Programmable filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H21/0018—Matched filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H21/0025—Particular filtering methods
    • H03H21/0027—Particular filtering methods filtering in the frequency domain
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H21/0067—Means or methods for compensation of undesirable effects
    • 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
    • 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
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • 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
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/301—Automatic calibration of stereophonic sound system, e.g. with test microphone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/305—Electronic adaptation of stereophonic audio signals to reverberation of the listening space
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
    • G10L2021/02166—Microphone arrays; Beamforming

Abstract

In an audio processing arrangement (2) input signals from a plurality of input sources (4, 6) are weighted by weighting factors x and y using weighting elements (10, 12). The weighted input signals are combined to a combined signal by an adder (18). The output signal of the adder (18) constitutes the output of the audio processing arrangement. In order to pronounce the signal with the strongest signal, the weighting coefficients (x, y) are controlled to maximize the output signal of the adder (18) under the constraint that the sum of the squares of the weighting coefficients is equal to a constant.
PCT/IB1998/001851 1997-11-22 1998-11-20 Audio processing arrangement with multiple sources WO1999027522A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP52802099A JP4372232B2 (en) 1997-11-22 1998-11-20 Audio processing device with multiple sources
KR1019997006620A KR100584491B1 (en) 1997-11-22 1998-11-20 Audio processing arrangement with multiple sources
EP98952964A EP0954850B1 (en) 1997-11-22 1998-11-20 Audio processing arrangement with multiple sources
DE69822128T DE69822128T2 (en) 1997-11-22 1998-11-20 ARRANGEMENT FOR PROCESSING AUDIO SIGNALS FROM MULTIPLE SOURCES

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP97203658.6 1997-11-22
EP97203658 1997-11-22

Publications (2)

Publication Number Publication Date
WO1999027522A2 WO1999027522A2 (en) 1999-06-03
WO1999027522A3 true WO1999027522A3 (en) 1999-08-12

Family

ID=8228958

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1998/001851 WO1999027522A2 (en) 1997-11-22 1998-11-20 Audio processing arrangement with multiple sources

Country Status (7)

Country Link
US (2) US7146012B1 (en)
EP (1) EP0954850B1 (en)
JP (1) JP4372232B2 (en)
KR (1) KR100584491B1 (en)
CN (1) CN1115663C (en)
DE (1) DE69822128T2 (en)
WO (1) WO1999027522A2 (en)

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US7716046B2 (en) 2004-10-26 2010-05-11 Qnx Software Systems (Wavemakers), Inc. Advanced periodic signal enhancement
US7680652B2 (en) 2004-10-26 2010-03-16 Qnx Software Systems (Wavemakers), Inc. Periodic signal enhancement system
US8306821B2 (en) 2004-10-26 2012-11-06 Qnx Software Systems Limited Sub-band periodic signal enhancement system
US7949520B2 (en) 2004-10-26 2011-05-24 QNX Software Sytems Co. Adaptive filter pitch extraction
US8170879B2 (en) 2004-10-26 2012-05-01 Qnx Software Systems Limited Periodic signal enhancement system
US7610196B2 (en) 2004-10-26 2009-10-27 Qnx Software Systems (Wavemakers), Inc. Periodic signal enhancement system
US8543390B2 (en) * 2004-10-26 2013-09-24 Qnx Software Systems Limited Multi-channel periodic signal enhancement system
CN101218848B (en) 2005-07-06 2011-11-16 皇家飞利浦电子股份有限公司 Apparatus and method for acoustic beamforming
CN101001293B (en) * 2006-01-13 2010-04-21 讯强通讯科技股份有限公司 Method for removing echo in radio earphone communication
CN100436482C (en) * 2006-04-14 2008-11-26 东莞太力生物工程有限公司 Long effective amalgamation protein of erythropoietin of human, preparing and purifying methods
JP4455614B2 (en) * 2007-06-13 2010-04-21 株式会社東芝 Acoustic signal processing method and apparatus
CN101689371B (en) 2007-06-21 2013-02-06 皇家飞利浦电子股份有限公司 A device for and a method of processing audio signals
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US8694310B2 (en) 2007-09-17 2014-04-08 Qnx Software Systems Limited Remote control server protocol system
US8209514B2 (en) 2008-02-04 2012-06-26 Qnx Software Systems Limited Media processing system having resource partitioning
WO2009156906A1 (en) * 2008-06-25 2009-12-30 Koninklijke Philips Electronics N.V. Audio processing
WO2010073193A1 (en) 2008-12-23 2010-07-01 Koninklijke Philips Electronics N.V. Speech capturing and speech rendering
JP5175262B2 (en) * 2009-12-02 2013-04-03 日本電信電話株式会社 Voice acquisition device
US9479866B2 (en) * 2011-11-14 2016-10-25 Analog Devices, Inc. Microphone array with daisy-chain summation
CN102813746B (en) * 2012-08-01 2014-07-09 河南科技大学 Traditional Chinese medicine composition for treating numbness of fingers
CN104751853B (en) * 2013-12-31 2019-01-04 辰芯科技有限公司 Dual microphone noise suppressing method and system
TR201815883T4 (en) 2014-03-17 2018-11-21 Anheuser Busch Inbev Sa Noise suppression.
JP6665353B2 (en) 2017-01-03 2020-03-13 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Audio capture using beamforming
RU2758192C2 (en) 2017-01-03 2021-10-26 Конинклейке Филипс Н.В. Sound recording using formation of directional diagram
US10638224B2 (en) 2017-01-03 2020-04-28 Koninklijke Philips N.V. Audio capture using beamforming
WO2018127447A1 (en) 2017-01-03 2018-07-12 Koninklijke Philips N.V. Method and apparatus for audio capture using beamforming
DE102017116273A1 (en) * 2017-03-30 2018-10-04 Riedel Communications International GmbH Network device for an intercom network
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Also Published As

Publication number Publication date
CN1251192A (en) 2000-04-19
US7146012B1 (en) 2006-12-05
JP4372232B2 (en) 2009-11-25
EP0954850A2 (en) 1999-11-10
KR20000070387A (en) 2000-11-25
CN1115663C (en) 2003-07-23
DE69822128D1 (en) 2004-04-08
DE69822128T2 (en) 2005-01-20
KR100584491B1 (en) 2006-06-02
WO1999027522A2 (en) 1999-06-03
EP0954850B1 (en) 2004-03-03
US7454023B1 (en) 2008-11-18
JP2001510001A (en) 2001-07-24

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