ATE393447T1 - Signaländerung mit hilfe von kontinuierlicher zeitverschiebung für celp kodierung mit niedriger bitrate - Google Patents

Signaländerung mit hilfe von kontinuierlicher zeitverschiebung für celp kodierung mit niedriger bitrate

Info

Publication number
ATE393447T1
ATE393447T1 AT02014365T AT02014365T ATE393447T1 AT E393447 T1 ATE393447 T1 AT E393447T1 AT 02014365 T AT02014365 T AT 02014365T AT 02014365 T AT02014365 T AT 02014365T AT E393447 T1 ATE393447 T1 AT E393447T1
Authority
AT
Austria
Prior art keywords
warp contour
continuous
contour
contours
bit rate
Prior art date
Application number
AT02014365T
Other languages
English (en)
Inventor
Ajit V Rao
Original Assignee
Microsoft Corp
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 Microsoft Corp filed Critical Microsoft Corp
Application granted granted Critical
Publication of ATE393447T1 publication Critical patent/ATE393447T1/de

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
    • G10L19/04—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 predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • 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
    • G10L15/00—Speech recognition
    • G10L15/08—Speech classification or search
    • G10L15/12—Speech classification or search using dynamic programming techniques, e.g. dynamic time warping [DTW]
    • 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

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)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Communication Control (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
AT02014365T 2001-06-29 2002-06-27 Signaländerung mit hilfe von kontinuierlicher zeitverschiebung für celp kodierung mit niedriger bitrate ATE393447T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/896,272 US6879955B2 (en) 2001-06-29 2001-06-29 Signal modification based on continuous time warping for low bit rate CELP coding

Publications (1)

Publication Number Publication Date
ATE393447T1 true ATE393447T1 (de) 2008-05-15

Family

ID=25405930

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02014365T ATE393447T1 (de) 2001-06-29 2002-06-27 Signaländerung mit hilfe von kontinuierlicher zeitverschiebung für celp kodierung mit niedriger bitrate

Country Status (5)

Country Link
US (2) US6879955B2 (de)
EP (1) EP1271471B1 (de)
JP (1) JP4162933B2 (de)
AT (1) ATE393447T1 (de)
DE (1) DE60226200T2 (de)

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7315815B1 (en) 1999-09-22 2008-01-01 Microsoft Corporation LPC-harmonic vocoder with superframe structure
US8605911B2 (en) 2001-07-10 2013-12-10 Dolby International Ab Efficient and scalable parametric stereo coding for low bitrate audio coding applications
SE0202159D0 (sv) 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
EP1423847B1 (de) 2001-11-29 2005-02-02 Coding Technologies AB Wiederherstellung von hochfrequenzkomponenten
SE0202770D0 (sv) * 2002-09-18 2002-09-18 Coding Technologies Sweden Ab Method for reduction of aliasing introduces by spectral envelope adjustment in real-valued filterbanks
US7394833B2 (en) * 2003-02-11 2008-07-01 Nokia Corporation Method and apparatus for reducing synchronization delay in packet switched voice terminals using speech decoder modification
US7668712B2 (en) * 2004-03-31 2010-02-23 Microsoft Corporation Audio encoding and decoding with intra frames and adaptive forward error correction
US7676362B2 (en) * 2004-12-31 2010-03-09 Motorola, Inc. Method and apparatus for enhancing loudness of a speech signal
AU2006232363B2 (en) 2005-04-01 2011-01-27 Qualcomm Incorporated Method and apparatus for anti-sparseness filtering of a bandwidth extended speech prediction excitation signal
TWI317933B (en) * 2005-04-22 2009-12-01 Qualcomm Inc Methods, data storage medium,apparatus of signal processing,and cellular telephone including the same
US8280730B2 (en) 2005-05-25 2012-10-02 Motorola Mobility Llc Method and apparatus of increasing speech intelligibility in noisy environments
US7177804B2 (en) * 2005-05-31 2007-02-13 Microsoft Corporation Sub-band voice codec with multi-stage codebooks and redundant coding
US7707034B2 (en) * 2005-05-31 2010-04-27 Microsoft Corporation Audio codec post-filter
US7831421B2 (en) * 2005-05-31 2010-11-09 Microsoft Corporation Robust decoder
US7720677B2 (en) 2005-11-03 2010-05-18 Coding Technologies Ab Time warped modified transform coding of audio signals
US8682652B2 (en) * 2006-06-30 2014-03-25 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Audio encoder, audio decoder and audio processor having a dynamically variable warping characteristic
US8532984B2 (en) * 2006-07-31 2013-09-10 Qualcomm Incorporated Systems, methods, and apparatus for wideband encoding and decoding of active frames
US8260609B2 (en) * 2006-07-31 2012-09-04 Qualcomm Incorporated Systems, methods, and apparatus for wideband encoding and decoding of inactive frames
US8725499B2 (en) * 2006-07-31 2014-05-13 Qualcomm Incorporated Systems, methods, and apparatus for signal change detection
US7987089B2 (en) * 2006-07-31 2011-07-26 Qualcomm Incorporated Systems and methods for modifying a zero pad region of a windowed frame of an audio signal
JP4380669B2 (ja) * 2006-08-07 2009-12-09 カシオ計算機株式会社 音声符号化装置、音声復号装置、音声符号化方法、音声復号方法、及び、プログラム
US9653088B2 (en) * 2007-06-13 2017-05-16 Qualcomm Incorporated Systems, methods, and apparatus for signal encoding using pitch-regularizing and non-pitch-regularizing coding
US20090271196A1 (en) * 2007-10-24 2009-10-29 Red Shift Company, Llc Classifying portions of a signal representing speech
ATE500588T1 (de) 2008-01-04 2011-03-15 Dolby Sweden Ab Audiokodierer und -dekodierer
EP2107556A1 (de) * 2008-04-04 2009-10-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Transform basierte Audiokodierung mittels Grundfrequenzkorrektur
CN103077722B (zh) 2008-07-11 2015-07-22 弗劳恩霍夫应用研究促进协会 提供时间扭曲激活信号以及使用该时间扭曲激活信号对音频信号编码
MY154452A (en) * 2008-07-11 2015-06-15 Fraunhofer Ges Forschung An apparatus and a method for decoding an encoded audio signal
US9082416B2 (en) * 2010-09-16 2015-07-14 Qualcomm Incorporated Estimating a pitch lag
KR101551046B1 (ko) 2011-02-14 2015-09-07 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 저-지연 통합 스피치 및 오디오 코딩에서 에러 은닉을 위한 장치 및 방법
MY160265A (en) 2011-02-14 2017-02-28 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E V Apparatus and Method for Encoding and Decoding an Audio Signal Using an Aligned Look-Ahead Portion
RU2586838C2 (ru) 2011-02-14 2016-06-10 Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. Аудиокодек, использующий синтез шума в течение неактивной фазы
AR085361A1 (es) 2011-02-14 2013-09-25 Fraunhofer Ges Forschung Codificacion y decodificacion de posiciones de los pulsos de las pistas de una señal de audio
MY165853A (en) 2011-02-14 2018-05-18 Fraunhofer Ges Forschung Linear prediction based coding scheme using spectral domain noise shaping
KR101699898B1 (ko) 2011-02-14 2017-01-25 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 스펙트럼 영역에서 디코딩된 오디오 신호를 처리하기 위한 방법 및 장치
TWI488176B (zh) 2011-02-14 2015-06-11 Fraunhofer Ges Forschung 音訊信號音軌脈衝位置之編碼與解碼技術
MY166394A (en) * 2011-02-14 2018-06-25 Fraunhofer Ges Forschung Information signal representation using lapped transform
KR101525185B1 (ko) 2011-02-14 2015-06-02 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 트랜지언트 검출 및 품질 결과를 사용하여 일부분의 오디오 신호를 코딩하기 위한 장치 및 방법
AU2014283180B2 (en) 2013-06-21 2017-01-05 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Method and apparatus for obtaining spectrum coefficients for a replacement frame of an audio signal, audio decoder, audio receiver and system for transmitting audio signals
US9985815B2 (en) * 2016-08-25 2018-05-29 Intel IP Corporation Signal processing chain switching
CN112951209B (zh) * 2021-01-27 2023-12-01 中国科学技术大学 一种语音识别方法、装置、设备及计算机可读存储介质

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4561102A (en) * 1982-09-20 1985-12-24 At&T Bell Laboratories Pitch detector for speech analysis
NL8500843A (nl) * 1985-03-22 1986-10-16 Koninkl Philips Electronics Nv Multipuls-excitatie lineair-predictieve spraakcoder.
JPS6295599A (ja) 1985-10-23 1987-05-02 株式会社リコー 残差駆動型音声合成方式
JPS62189833A (ja) * 1986-02-17 1987-08-19 Hitachi Ltd 音声符号化復号化装置
CA1337217C (en) * 1987-08-28 1995-10-03 Daniel Kenneth Freeman Speech coding
JPH0782359B2 (ja) * 1989-04-21 1995-09-06 三菱電機株式会社 音声符号化装置、音声復号化装置及び音声符号化・復号化装置
GB2235354A (en) * 1989-08-16 1991-02-27 Philips Electronic Associated Speech coding/encoding using celp
JP3199142B2 (ja) 1993-09-22 2001-08-13 日本電信電話株式会社 音声の励振信号符号化方法および装置
JPH07160299A (ja) * 1993-12-06 1995-06-23 Hitachi Denshi Ltd 音声信号帯域圧縮伸張装置並びに音声信号の帯域圧縮伝送方式及び再生方式
US5781880A (en) * 1994-11-21 1998-07-14 Rockwell International Corporation Pitch lag estimation using frequency-domain lowpass filtering of the linear predictive coding (LPC) residual
US5602959A (en) * 1994-12-05 1997-02-11 Motorola, Inc. Method and apparatus for characterization and reconstruction of speech excitation waveforms
US5774846A (en) * 1994-12-19 1998-06-30 Matsushita Electric Industrial Co., Ltd. Speech coding apparatus, linear prediction coefficient analyzing apparatus and noise reducing apparatus
US5648989A (en) * 1994-12-21 1997-07-15 Paradyne Corporation Linear prediction filter coefficient quantizer and filter set
US5704003A (en) 1995-09-19 1997-12-30 Lucent Technologies Inc. RCELP coder
US6240384B1 (en) * 1995-12-04 2001-05-29 Kabushiki Kaisha Toshiba Speech synthesis method
JP3531780B2 (ja) 1996-11-15 2004-05-31 日本電信電話株式会社 音声符号化方法および復号化方法
US5886276A (en) * 1997-01-16 1999-03-23 The Board Of Trustees Of The Leland Stanford Junior University System and method for multiresolution scalable audio signal encoding
JP3296411B2 (ja) 1997-02-21 2002-07-02 日本電信電話株式会社 音声符号化方法および復号化方法
GB9718026D0 (en) * 1997-08-27 1997-10-29 Secr Defence Multi-component signal detection system
US5963897A (en) * 1998-02-27 1999-10-05 Lernout & Hauspie Speech Products N.V. Apparatus and method for hybrid excited linear prediction speech encoding
US6449590B1 (en) * 1998-08-24 2002-09-10 Conexant Systems, Inc. Speech encoder using warping in long term preprocessing
US6330533B2 (en) 1998-08-24 2001-12-11 Conexant Systems, Inc. Speech encoder adaptively applying pitch preprocessing with warping of target signal
US6113653A (en) * 1998-09-11 2000-09-05 Motorola, Inc. Method and apparatus for coding an information signal using delay contour adjustment
JP3180786B2 (ja) * 1998-11-27 2001-06-25 日本電気株式会社 音声符号化方法及び音声符号化装置
US6311154B1 (en) 1998-12-30 2001-10-30 Nokia Mobile Phones Limited Adaptive windows for analysis-by-synthesis CELP-type speech coding
US6223151B1 (en) * 1999-02-10 2001-04-24 Telefon Aktie Bolaget Lm Ericsson Method and apparatus for pre-processing speech signals prior to coding by transform-based speech coders
US6732070B1 (en) * 2000-02-16 2004-05-04 Nokia Mobile Phones, Ltd. Wideband speech codec using a higher sampling rate in analysis and synthesis filtering than in excitation searching

Also Published As

Publication number Publication date
US6879955B2 (en) 2005-04-12
US7228272B2 (en) 2007-06-05
US20050131681A1 (en) 2005-06-16
US20030004718A1 (en) 2003-01-02
JP4162933B2 (ja) 2008-10-08
JP2003122400A (ja) 2003-04-25
EP1271471A3 (de) 2004-01-28
EP1271471A2 (de) 2003-01-02
EP1271471B1 (de) 2008-04-23
DE60226200T2 (de) 2009-05-14
DE60226200D1 (de) 2008-06-05

Similar Documents

Publication Publication Date Title
ATE393447T1 (de) Signaländerung mit hilfe von kontinuierlicher zeitverschiebung für celp kodierung mit niedriger bitrate
KR100444635B1 (ko) 개량형 음성 코딩 방법
DE60023576D1 (de) Verfahren und Vorrichtung zur Bewegtbilddatentranscodierung
CA2687685A1 (en) Signal encoding using pitch-regularizing and non-pitch-regularizing coding
CA2109412A1 (en) Method and Apparatus for Estimating Signal Weighting Parameters in a Receiver
SG43428A1 (en) Speech encoding method and apparatus
CA2027136A1 (en) Perceptual coding of audio signals
EP0893791A3 (de) Verfahren zur Kodierung, Verbesserung und Synthese von Sprache
ATE424023T1 (de) Sprachkodierung mit variabler bit-rate
WO2005050324A3 (en) A method and apparatus for producing microchips
ATE414381T1 (de) Videokodierung und -dekodierung, bewegungskompensiertervideokoder und zugehöriger dekoder
DE50200953D1 (de) Verfahren und vorrichtung zum erzeugen bzw. decodieren eines skalierbaren datenstroms unter berücksichtigung einer bitsparkasse, codierer und skalierbarer codierer
WO2007018815A3 (en) Method and apparatus for coding an information signal using pitch delay contour adjustment
RU2008130674A (ru) Способ и устройство эффективной маскировки стирания кадров в речевых кодеках
ES2159688T3 (es) Metodo y aparato para reproducir señales de voz y metodo para transmitirlas.
MY141649A (en) Method and device for efficient frame erasure concealment in linear predictive based speech codecs
CA2419521A1 (en) System and method for using pattern vectors for video and image coding and decoding
ATE529858T1 (de) Audiodekodierung mit füllung von spektralen lücken
DE69926821D1 (de) Verfahren zur signalgesteuerten Schaltung zwischen verschiedenen Audiokodierungssystemen
TW200705387A (en) Systems, methods, and apparatus for highband time warping
DE60021083D1 (de) Verfahren zur verbesserung der kodierungseffizienz eines audiosignals
DE69328064D1 (de) Zeit-Frequenzinterpolation mit Anwendung zur Sprachkodierung mit niedriger Rate
KR19990008977A (ko) 윤곽선 부호화 방법
TW200627352A (en) Operation apparatus for overdrive and operation method for overdrive thereof
SE0400418L (sv) Förbättrad felmaskering i frekvensdomänen

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties