EP1748426A3 - Method and apparatus for adaptively suppressing noise - Google Patents

Method and apparatus for adaptively suppressing noise Download PDF

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Publication number
EP1748426A3
EP1748426A3 EP06020682A EP06020682A EP1748426A3 EP 1748426 A3 EP1748426 A3 EP 1748426A3 EP 06020682 A EP06020682 A EP 06020682A EP 06020682 A EP06020682 A EP 06020682A EP 1748426 A3 EP1748426 A3 EP 1748426A3
Authority
EP
European Patent Office
Prior art keywords
nsr
signal
power
term
overall
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.)
Withdrawn
Application number
EP06020682A
Other languages
German (de)
French (fr)
Other versions
EP1748426A2 (en
Inventor
Ravi Chandran
Bruce E. Dunne
Daniel J. Marchok
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.)
Coriant Operations Inc
Original Assignee
Tellabs Operations 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 Tellabs Operations Inc filed Critical Tellabs Operations Inc
Priority claimed from EP00902355A external-priority patent/EP1141948B1/en
Publication of EP1748426A2 publication Critical patent/EP1748426A2/en
Publication of EP1748426A3 publication Critical patent/EP1748426A3/en
Withdrawn legal-status Critical Current

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
    • 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
    • G10L21/0232—Processing in the frequency domain
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Telephone Function (AREA)
  • Noise Elimination (AREA)

Abstract

An apparatus and method for suppressing noise is presented. The apparatus may utilize a filter bank of bandpass filters to split the input noisy speech-containing signal into separate frequency bands. The overall average noise-to-signal ration (NSR) of the input signal is estimated in the overall NSR estimator, which estimates the average noisy signal power in the input signal during speech activity and the average noise power during silence. Two indirect power measures are performed for each band, measuring a short-term power and a long-term power. The power estimation processes are adapted based on the signal activity indicated by the JVADAD. An NSR adapter adapts the NSR for each frequency band based on the long-term and short-term power measures, the overall NSR and the signal activity indicated by the JVADAD. The gain computer utilizes these NSR values to determine the gain factors for each frequency band.
EP06020682A 1999-01-07 2000-01-07 Method and apparatus for adaptively suppressing noise Withdrawn EP1748426A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11524599P 1999-01-07 1999-01-07
EP00902355A EP1141948B1 (en) 1999-01-07 2000-01-07 Method and apparatus for adaptively suppressing noise

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP00902355A Division EP1141948B1 (en) 1999-01-07 2000-01-07 Method and apparatus for adaptively suppressing noise

Publications (2)

Publication Number Publication Date
EP1748426A2 EP1748426A2 (en) 2007-01-31
EP1748426A3 true EP1748426A3 (en) 2007-02-21

Family

ID=37198612

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06020682A Withdrawn EP1748426A3 (en) 1999-01-07 2000-01-07 Method and apparatus for adaptively suppressing noise
EP06076642A Withdrawn EP1729287A1 (en) 1999-01-07 2000-01-07 Method and apparatus for adaptively suppressing noise

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06076642A Withdrawn EP1729287A1 (en) 1999-01-07 2000-01-07 Method and apparatus for adaptively suppressing noise

Country Status (1)

Country Link
EP (2) EP1748426A3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112007003674T5 (en) * 2007-10-02 2010-08-12 Akg Acoustics Gmbh Method and apparatus for single-channel speech enhancement based on a latency-reduced auditory model
TWI422147B (en) 2008-07-29 2014-01-01 Lg Electronics Inc An apparatus for processing an audio signal and method thereof
EP2228902B1 (en) 2009-03-08 2017-09-27 LG Electronics Inc. An apparatus for processing an audio signal and method thereof
GB201704489D0 (en) 2017-03-21 2017-05-03 Semafone Ltd Telephone signal processing
EP3800640A4 (en) * 2019-06-21 2021-09-29 Shenzhen Goodix Technology Co., Ltd. Voice detection method, voice detection device, voice processing chip and electronic apparatus

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630304A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic background noise estimator for a noise suppression system
US4630305A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic gain selector for a noise suppression system
WO1989003141A1 (en) * 1987-10-01 1989-04-06 Motorola, Inc. Improved noise suppression system
US5012519A (en) * 1987-12-25 1991-04-30 The Dsp Group, Inc. Noise reduction system
WO1996024128A1 (en) * 1995-01-30 1996-08-08 Telefonaktiebolaget Lm Ericsson Spectral subtraction noise suppression method
US5632003A (en) * 1993-07-16 1997-05-20 Dolby Laboratories Licensing Corporation Computationally efficient adaptive bit allocation for coding method and apparatus
US5706395A (en) * 1995-04-19 1998-01-06 Texas Instruments Incorporated Adaptive weiner filtering using a dynamic suppression factor
EP0856833A2 (en) * 1997-01-29 1998-08-05 Nec Corporation Noise canceling method and apparatus for the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4351983A (en) 1979-03-05 1982-09-28 International Business Machines Corp. Speech detector with variable threshold
US4454609A (en) 1981-10-05 1984-06-12 Signatron, Inc. Speech intelligibility enhancement
US4628529A (en) 1985-07-01 1986-12-09 Motorola, Inc. Noise suppression system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630304A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic background noise estimator for a noise suppression system
US4630305A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic gain selector for a noise suppression system
WO1989003141A1 (en) * 1987-10-01 1989-04-06 Motorola, Inc. Improved noise suppression system
US5012519A (en) * 1987-12-25 1991-04-30 The Dsp Group, Inc. Noise reduction system
US5632003A (en) * 1993-07-16 1997-05-20 Dolby Laboratories Licensing Corporation Computationally efficient adaptive bit allocation for coding method and apparatus
WO1996024128A1 (en) * 1995-01-30 1996-08-08 Telefonaktiebolaget Lm Ericsson Spectral subtraction noise suppression method
US5706395A (en) * 1995-04-19 1998-01-06 Texas Instruments Incorporated Adaptive weiner filtering using a dynamic suppression factor
EP0856833A2 (en) * 1997-01-29 1998-08-05 Nec Corporation Noise canceling method and apparatus for the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GAGNON L ET AL: "SPEECH ENHANCEMENT USING RESONATOR FILTERBANKS", PROC. IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH & SIGNAL PROCESSING (ICASSP '91), 14 May 1991 (1991-05-14) - 17 May 1991 (1991-05-17), IEEE, NEW YORK, USA, pages 981 - 984, XP000222243, ISBN: 0-7803-0003-3 *

Also Published As

Publication number Publication date
EP1748426A2 (en) 2007-01-31
EP1729287A1 (en) 2006-12-06

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