DE602004029899D1 - Verfahren und einrichtung zur rauschverminderung - Google Patents

Verfahren und einrichtung zur rauschverminderung

Info

Publication number
DE602004029899D1
DE602004029899D1 DE602004029899T DE602004029899T DE602004029899D1 DE 602004029899 D1 DE602004029899 D1 DE 602004029899D1 DE 602004029899 T DE602004029899 T DE 602004029899T DE 602004029899 T DE602004029899 T DE 602004029899T DE 602004029899 D1 DE602004029899 D1 DE 602004029899D1
Authority
DE
Germany
Prior art keywords
speech
reference signal
signal
noise
noise reference
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
DE602004029899T
Other languages
English (en)
Inventor
Simon Doclo
Ann Spriet
Marc Moonen
Jan Wouters
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cochlear Ltd
Original Assignee
Cochlear Ltd
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
Priority claimed from AU2003903575A external-priority patent/AU2003903575A0/en
Priority claimed from AU2004901931A external-priority patent/AU2004901931A0/en
Application filed by Cochlear Ltd filed Critical Cochlear Ltd
Publication of DE602004029899D1 publication Critical patent/DE602004029899D1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G10L21/0208—Noise filtering
    • 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
    • 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
    • G10L2021/02165—Two microphones, one receiving mainly the noise signal and the other one mainly the speech signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
    • H04R2430/25—Array processing for suppression of unwanted side-lobes in directivity characteristics, e.g. a blocking matrix
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/40—Arrangements for obtaining a desired directivity characteristic
    • H04R25/407—Circuits for combining signals of a plurality of transducers
DE602004029899T 2003-07-11 2004-07-12 Verfahren und einrichtung zur rauschverminderung Active DE602004029899D1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU2003903575A AU2003903575A0 (en) 2003-07-11 2003-07-11 Multi-microphone adaptive noise reduction techniques for speech enhancement
AU2004901931A AU2004901931A0 (en) 2004-04-08 Multi-microphone Adaptive Noise Reduction Techniques for Speech Enhancement
PCT/BE2004/000103 WO2005006808A1 (en) 2003-07-11 2004-07-12 Method and device for noise reduction

Publications (1)

Publication Number Publication Date
DE602004029899D1 true DE602004029899D1 (de) 2010-12-16

Family

ID=34063961

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004029899T Active DE602004029899D1 (de) 2003-07-11 2004-07-12 Verfahren und einrichtung zur rauschverminderung

Country Status (6)

Country Link
US (1) US7657038B2 (de)
EP (1) EP1652404B1 (de)
JP (1) JP4989967B2 (de)
AT (1) ATE487332T1 (de)
DE (1) DE602004029899D1 (de)
WO (1) WO2005006808A1 (de)

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Also Published As

Publication number Publication date
US20070055505A1 (en) 2007-03-08
WO2005006808A1 (en) 2005-01-20
JP4989967B2 (ja) 2012-08-01
JP2007525865A (ja) 2007-09-06
EP1652404A1 (de) 2006-05-03
ATE487332T1 (de) 2010-11-15
US7657038B2 (en) 2010-02-02
EP1652404B1 (de) 2010-11-03

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