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DE69721349D1 - Sprachkodierung - Google Patents

Sprachkodierung

Info

Publication number
DE69721349D1
DE69721349D1 DE69721349T DE69721349T DE69721349D1 DE 69721349 D1 DE69721349 D1 DE 69721349D1 DE 69721349 T DE69721349 T DE 69721349T DE 69721349 T DE69721349 T DE 69721349T DE 69721349 D1 DE69721349 D1 DE 69721349D1
Authority
DE
Germany
Prior art keywords
speech coding
speech
coding
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.)
Expired - Lifetime
Application number
DE69721349T
Other languages
English (en)
Other versions
DE69721349T2 (de
Inventor
Ajit V Rao
Wilfrid P Leblanc
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments 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 Texas Instruments Inc filed Critical Texas Instruments Inc
Application granted granted Critical
Publication of DE69721349D1 publication Critical patent/DE69721349D1/de
Publication of DE69721349T2 publication Critical patent/DE69721349T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G10L19/012—Comfort noise or silence coding

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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Noise Elimination (AREA)
DE69721349T 1996-01-29 1997-01-29 Sprachkodierung Expired - Lifetime DE69721349T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US593206 1996-01-29
US08/593,206 US5794199A (en) 1996-01-29 1996-01-29 Method and system for improved discontinuous speech transmission

Publications (2)

Publication Number Publication Date
DE69721349D1 true DE69721349D1 (de) 2003-06-05
DE69721349T2 DE69721349T2 (de) 2004-04-01

Family

ID=24373831

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69721349T Expired - Lifetime DE69721349T2 (de) 1996-01-29 1997-01-29 Sprachkodierung

Country Status (4)

Country Link
US (3) US5794199A (de)
EP (1) EP0786760B1 (de)
JP (1) JPH1097292A (de)
DE (1) DE69721349T2 (de)

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SE505156C2 (sv) * 1995-01-30 1997-07-07 Ericsson Telefon Ab L M Förfarande för bullerundertryckning genom spektral subtraktion
FI99066C (fi) * 1995-01-31 1997-09-25 Nokia Mobile Phones Ltd Tiedonsiirtomenetelmä
US5794199A (en) * 1996-01-29 1998-08-11 Texas Instruments Incorporated Method and system for improved discontinuous speech transmission
SE507370C2 (sv) * 1996-09-13 1998-05-18 Ericsson Telefon Ab L M Metod och anordning för att alstra komfortbrus i linjärprediktiv talavkodare
US6269331B1 (en) 1996-11-14 2001-07-31 Nokia Mobile Phones Limited Transmission of comfort noise parameters during discontinuous transmission
US5960389A (en) 1996-11-15 1999-09-28 Nokia Mobile Phones Limited Methods for generating comfort noise during discontinuous transmission
US6122611A (en) * 1998-05-11 2000-09-19 Conexant Systems, Inc. Adding noise during LPC coded voice activity periods to improve the quality of coded speech coexisting with background noise
TW376611B (en) * 1998-05-26 1999-12-11 Koninkl Philips Electronics Nv Transmission system with improved speech encoder
US6141639A (en) * 1998-06-05 2000-10-31 Conexant Systems, Inc. Method and apparatus for coding of signals containing speech and background noise
US6275798B1 (en) 1998-09-16 2001-08-14 Telefonaktiebolaget L M Ericsson Speech coding with improved background noise reproduction
SE9803698L (sv) 1998-10-26 2000-04-27 Ericsson Telefon Ab L M Metoder och anordningar i ett telekommunikationssystem
US7124079B1 (en) * 1998-11-23 2006-10-17 Telefonaktiebolaget Lm Ericsson (Publ) Speech coding with comfort noise variability feature for increased fidelity
FI118359B (fi) * 1999-01-18 2007-10-15 Nokia Corp Menetelmä puheentunnistuksessa ja puheentunnistuslaite ja langaton viestin
US6226607B1 (en) 1999-02-08 2001-05-01 Qualcomm Incorporated Method and apparatus for eighth-rate random number generation for speech coders
US6519260B1 (en) 1999-03-17 2003-02-11 Telefonaktiebolaget Lm Ericsson (Publ) Reduced delay priority for comfort noise
GB9912577D0 (en) * 1999-05-28 1999-07-28 Mitel Corp Method of detecting silence in a packetized voice stream
JP3451998B2 (ja) * 1999-05-31 2003-09-29 日本電気株式会社 無音声符号化を含む音声符号化・復号装置、復号化方法及びプログラムを記録した記録媒体
JP2003501925A (ja) * 1999-06-07 2003-01-14 エリクソン インコーポレイテッド パラメトリックノイズモデル統計値を用いたコンフォートノイズの生成方法及び装置
US6782361B1 (en) * 1999-06-18 2004-08-24 Mcgill University Method and apparatus for providing background acoustic noise during a discontinued/reduced rate transmission mode of a voice transmission system
US6959274B1 (en) * 1999-09-22 2005-10-25 Mindspeed Technologies, Inc. Fixed rate speech compression system and method
GB2356538A (en) * 1999-11-22 2001-05-23 Mitel Corp Comfort noise generation for open discontinuous transmission systems
US6965865B2 (en) 1999-12-30 2005-11-15 Bank One Delaware N.A. System and method for integrated customer management
US6873604B1 (en) * 2000-07-31 2005-03-29 Cisco Technology, Inc. Method and apparatus for transitioning comfort noise in an IP-based telephony system
US6647053B1 (en) * 2000-08-31 2003-11-11 Ricochet Networks, Inc. Method and system for channel masking in a communication network
JP2002073072A (ja) * 2000-08-31 2002-03-12 Sony Corp モデル適応装置およびモデル適応方法、記録媒体、並びにパターン認識装置
JP3670217B2 (ja) * 2000-09-06 2005-07-13 国立大学法人名古屋大学 雑音符号化装置、雑音復号装置、雑音符号化方法および雑音復号方法
US7012901B2 (en) * 2001-02-28 2006-03-14 Cisco Systems, Inc. Devices, software and methods for generating aggregate comfort noise in teleconferencing over VoIP networks
US20030120484A1 (en) * 2001-06-12 2003-06-26 David Wong Method and system for generating colored comfort noise in the absence of silence insertion description packets
US20030093270A1 (en) * 2001-11-13 2003-05-15 Domer Steven M. Comfort noise including recorded noise
KR100434723B1 (ko) * 2001-12-24 2004-06-07 주식회사 케이티 음성 신호특성을 이용한 돌발잡음 제거장치 및 그 방법
US8751384B2 (en) 2002-05-08 2014-06-10 Metavante Corporation Integrated bill presentment and payment system and method of operating the same
FR2851352B1 (fr) * 2003-02-18 2005-04-01 France Telecom Systeme de conversion d'un signal audio continu en un signal audiot traduit et synthetise
US7243065B2 (en) * 2003-04-08 2007-07-10 Freescale Semiconductor, Inc Low-complexity comfort noise generator
US7313233B2 (en) * 2003-06-10 2007-12-25 Intel Corporation Tone clamping and replacement
US7536298B2 (en) * 2004-03-15 2009-05-19 Intel Corporation Method of comfort noise generation for speech communication
US8194722B2 (en) 2004-10-11 2012-06-05 Broadcom Corporation Various methods and apparatuses for impulse noise mitigation
US9374257B2 (en) * 2005-03-18 2016-06-21 Broadcom Corporation Methods and apparatuses of measuring impulse noise parameters in multi-carrier communication systems
GB0703795D0 (en) * 2007-02-27 2007-04-04 Sepura Ltd Speech encoding and decoding in communications systems
WO2008119866A1 (en) * 2007-03-30 2008-10-09 Savox Communications Oy Ab (Ltd) A radio communication device
CN101335003B (zh) * 2007-09-28 2010-07-07 华为技术有限公司 噪声生成装置、及方法
US8605837B2 (en) 2008-10-10 2013-12-10 Broadcom Corporation Adaptive frequency-domain reference noise canceller for multicarrier communications systems
US8589153B2 (en) * 2011-06-28 2013-11-19 Microsoft Corporation Adaptive conference comfort noise
CN103137133B (zh) * 2011-11-29 2017-06-06 南京中兴软件有限责任公司 非激活音信号参数估计方法及舒适噪声产生方法及系统
PL2823479T3 (pl) 2012-09-11 2015-10-30 Ericsson Telefon Ab L M Generowanie szumu komfortowego
US9775110B2 (en) 2014-05-30 2017-09-26 Apple Inc. Power save for volte during silence periods
EP2980790A1 (de) 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur Komfortgeräuscherzeugungs-Modusauswahl

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US4797926A (en) * 1986-09-11 1989-01-10 American Telephone And Telegraph Company, At&T Bell Laboratories Digital speech vocoder
US4771465A (en) * 1986-09-11 1988-09-13 American Telephone And Telegraph Company, At&T Bell Laboratories Digital speech sinusoidal vocoder with transmission of only subset of harmonics
US4910781A (en) * 1987-06-26 1990-03-20 At&T Bell Laboratories Code excited linear predictive vocoder using virtual searching
US4899385A (en) * 1987-06-26 1990-02-06 American Telephone And Telegraph Company Code excited linear predictive vocoder
US5276765A (en) * 1988-03-11 1994-01-04 British Telecommunications Public Limited Company Voice activity detection
NZ228290A (en) * 1988-03-11 1992-01-29 British Telecomm Voice activity detector by spectrum comparison
US5091945A (en) * 1989-09-28 1992-02-25 At&T Bell Laboratories Source dependent channel coding with error protection
US5537509A (en) * 1990-12-06 1996-07-16 Hughes Electronics Comfort noise generation for digital communication systems
US5680508A (en) * 1991-05-03 1997-10-21 Itt Corporation Enhancement of speech coding in background noise for low-rate speech coder
JP2518765B2 (ja) * 1991-05-31 1996-07-31 国際電気株式会社 音声符号化通信方式及びその装置
US5267317A (en) * 1991-10-18 1993-11-30 At&T Bell Laboratories Method and apparatus for smoothing pitch-cycle waveforms
US5630016A (en) * 1992-05-28 1997-05-13 Hughes Electronics Comfort noise generation for digital communication systems
US5495555A (en) * 1992-06-01 1996-02-27 Hughes Aircraft Company High quality low bit rate celp-based speech codec
JP2897551B2 (ja) * 1992-10-12 1999-05-31 日本電気株式会社 音声復号化装置
KR0175965B1 (ko) * 1993-11-30 1999-04-01 마틴 아이. 핀스톤 통신 시스템에서의 송신 노이즈 감축
JP3182032B2 (ja) * 1993-12-10 2001-07-03 株式会社日立国際電気 音声符号化通信方式及びその装置
KR970005131B1 (ko) * 1994-01-18 1997-04-12 대우전자 주식회사 인간의 청각특성에 적응적인 디지탈 오디오 부호화장치
US5742734A (en) * 1994-08-10 1998-04-21 Qualcomm Incorporated Encoding rate selection in a variable rate vocoder
US5794199A (en) * 1996-01-29 1998-08-11 Texas Instruments Incorporated Method and system for improved discontinuous speech transmission

Also Published As

Publication number Publication date
DE69721349T2 (de) 2004-04-01
EP0786760B1 (de) 2003-05-02
US5794199A (en) 1998-08-11
EP0786760A3 (de) 1998-09-16
JPH1097292A (ja) 1998-04-14
EP0786760A2 (de) 1997-07-30
US6101466A (en) 2000-08-08
US5978760A (en) 1999-11-02

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Legal Events

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8364 No opposition during term of opposition