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AU4661497A - Channel gain modification system and method for noise reduction in voice communication - Google Patents

Channel gain modification system and method for noise reduction in voice communication

Info

Publication number
AU4661497A
AU4661497A AU46614/97A AU4661497A AU4661497A AU 4661497 A AU4661497 A AU 4661497A AU 46614/97 A AU46614/97 A AU 46614/97A AU 4661497 A AU4661497 A AU 4661497A AU 4661497 A AU4661497 A AU 4661497A
Authority
AU
Australia
Prior art keywords
noise reduction
voice communication
channel gain
modification system
gain modification
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
AU46614/97A
Inventor
Anthony P. Mauro
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.)
Qualcomm Inc
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of AU4661497A publication Critical patent/AU4661497A/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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • 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
    • 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)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Noise Elimination (AREA)
AU46614/97A 1997-09-30 1997-09-30 Channel gain modification system and method for noise reduction in voice communication Abandoned AU4661497A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1997/017656 WO1999012155A1 (en) 1997-09-30 1997-09-30 Channel gain modification system and method for noise reduction in voice communication

Publications (1)

Publication Number Publication Date
AU4661497A true AU4661497A (en) 1999-03-22

Family

ID=22261787

Family Applications (1)

Application Number Title Priority Date Filing Date
AU46614/97A Abandoned AU4661497A (en) 1997-09-30 1997-09-30 Channel gain modification system and method for noise reduction in voice communication

Country Status (2)

Country Link
AU (1) AU4661497A (en)
WO (1) WO1999012155A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2349259B (en) * 1999-04-23 2003-11-12 Canon Kk Speech processing apparatus and method
WO2001011604A1 (en) 1999-08-10 2001-02-15 Telogy Networks, Inc. Background energy estimation
DE19957220A1 (en) * 1999-11-27 2001-06-21 Alcatel Sa Noise suppression adapted to the current noise level
US6523003B1 (en) * 2000-03-28 2003-02-18 Tellabs Operations, Inc. Spectrally interdependent gain adjustment techniques
US6983242B1 (en) * 2000-08-21 2006-01-03 Mindspeed Technologies, Inc. Method for robust classification in speech coding
TR201821299T4 (en) 2005-04-22 2019-01-21 Qualcomm Inc Systems, methods and apparatus for gain factor smoothing.
US7844453B2 (en) * 2006-05-12 2010-11-30 Qnx Software Systems Co. Robust noise estimation
JP4497485B2 (en) * 2009-08-18 2010-07-07 Ｋｄｄｉ株式会社 Audio information classification device
US20130282373A1 (en) * 2012-04-23 2013-10-24 Qualcomm Incorporated Systems and methods for audio signal processing
CN113782011B (en) * 2021-08-26 2024-04-09 清华大学苏州汽车研究院（相城） Training method of frequency band gain model and voice noise reduction method for vehicle-mounted scene

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630305A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic gain selector for a noise suppression system
US4811404A (en) * 1987-10-01 1989-03-07 Motorola, Inc. Noise suppression system
EP1239456A1 (en) * 1991-06-11 2002-09-11 QUALCOMM Incorporated Variable rate vocoder

Also Published As

Publication number Publication date
WO1999012155A1 (en) 1999-03-11

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase