AU2001282047A1 - Attenuation of background noise and echoes in audio signal - Google Patents

Attenuation of background noise and echoes in audio signal

Info

Publication number
AU2001282047A1
AU2001282047A1 AU2001282047A AU8204701A AU2001282047A1 AU 2001282047 A1 AU2001282047 A1 AU 2001282047A1 AU 2001282047 A AU2001282047 A AU 2001282047A AU 8204701 A AU8204701 A AU 8204701A AU 2001282047 A1 AU2001282047 A1 AU 2001282047A1
Authority
AU
Australia
Prior art keywords
echoes
attenuation
audio signal
background noise
noise
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.)
Abandoned
Application number
AU2001282047A
Other languages
English (en)
Inventor
Rudolf Foldvari
Laszlo Gyimesi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of AU2001282047A1 publication Critical patent/AU2001282047A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques 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 TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques 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
    • G10L2021/02168—Noise filtering characterised by the method used for estimating noise the estimation exclusively taking place during speech pauses

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)
  • Noise Elimination (AREA)
  • Filters That Use Time-Delay Elements (AREA)
AU2001282047A 2000-07-31 2001-07-31 Attenuation of background noise and echoes in audio signal Abandoned AU2001282047A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
HU0003010 2000-07-31
HU0003010A HUP0003010A2 (en) 2000-07-31 2000-07-31 Signal purification method for the discrimination of a signal from background noise
PCT/EP2001/008827 WO2002011125A1 (en) 2000-07-31 2001-07-31 Attenuation of background noise and echoes in audio signal

Publications (1)

Publication Number Publication Date
AU2001282047A1 true AU2001282047A1 (en) 2002-02-13

Family

ID=89978510

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001282047A Abandoned AU2001282047A1 (en) 2000-07-31 2001-07-31 Attenuation of background noise and echoes in audio signal

Country Status (3)

Country Link
AU (1) AU2001282047A1 (hu)
HU (1) HUP0003010A2 (hu)
WO (1) WO2002011125A1 (hu)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509570B1 (de) * 2007-10-02 2011-12-15 Akg Acoustics Gmbh Methode und apparat zur einkanal-sprachverbesserung basierend auf einem latenzzeitreduzierten gehörmodell
CN111145770B (zh) * 2018-11-02 2022-11-22 北京微播视界科技有限公司 音频处理方法和装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07261797A (ja) * 1994-03-18 1995-10-13 Mitsubishi Electric Corp 信号符号化装置及び信号復号化装置
US5574824A (en) * 1994-04-11 1996-11-12 The United States Of America As Represented By The Secretary Of The Air Force Analysis/synthesis-based microphone array speech enhancer with variable signal distortion
US5933495A (en) * 1997-02-07 1999-08-03 Texas Instruments Incorporated Subband acoustic noise suppression
AU2408500A (en) * 1999-01-07 2000-07-24 Tellabs Operations, Inc. Method and apparatus for adaptively suppressing noise

Also Published As

Publication number Publication date
HUP0003010A2 (en) 2002-08-28
WO2002011125A1 (en) 2002-02-07
HU0003010D0 (en) 2000-10-28

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