DE69123500T2 - 32 Kb/s codeangeregte prädiktive Codierung mit niedrigen Verzögerung für Breitband-Sprachsignal - Google Patents

32 Kb/s codeangeregte prädiktive Codierung mit niedrigen Verzögerung für Breitband-Sprachsignal

Info

Publication number
DE69123500T2
DE69123500T2 DE69123500T DE69123500T DE69123500T2 DE 69123500 T2 DE69123500 T2 DE 69123500T2 DE 69123500 T DE69123500 T DE 69123500T DE 69123500 T DE69123500 T DE 69123500T DE 69123500 T2 DE69123500 T2 DE 69123500T2
Authority
DE
Germany
Prior art keywords
low
voice signal
predictive coding
delay code
filter
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
DE69123500T
Other languages
English (en)
Other versions
DE69123500D1 (de
Inventor
Erik Ordentlich
Yair Shoham
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.)
AT&T Corp
Original Assignee
AT&T 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 AT&T Corp filed Critical AT&T Corp
Publication of DE69123500D1 publication Critical patent/DE69123500D1/de
Application granted granted Critical
Publication of DE69123500T2 publication Critical patent/DE69123500T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • 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
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
    • 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
    • G10L25/15—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 formant information
DE69123500T 1990-06-29 1991-06-20 32 Kb/s codeangeregte prädiktive Codierung mit niedrigen Verzögerung für Breitband-Sprachsignal Expired - Lifetime DE69123500T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/546,627 US5235669A (en) 1990-06-29 1990-06-29 Low-delay code-excited linear-predictive coding of wideband speech at 32 kbits/sec

Publications (2)

Publication Number Publication Date
DE69123500D1 DE69123500D1 (de) 1997-01-23
DE69123500T2 true DE69123500T2 (de) 1997-04-17

Family

ID=24181283

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69132885T Expired - Lifetime DE69132885T2 (de) 1990-06-29 1991-06-20 CELP-Kodierung niedriger Verzögerung und 32 kbit/s für ein Breitband-Sprachsignal
DE69123500T Expired - Lifetime DE69123500T2 (de) 1990-06-29 1991-06-20 32 Kb/s codeangeregte prädiktive Codierung mit niedrigen Verzögerung für Breitband-Sprachsignal

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69132885T Expired - Lifetime DE69132885T2 (de) 1990-06-29 1991-06-20 CELP-Kodierung niedriger Verzögerung und 32 kbit/s für ein Breitband-Sprachsignal

Country Status (4)

Country Link
US (1) US5235669A (de)
EP (2) EP0732686B1 (de)
JP (1) JP3234609B2 (de)
DE (2) DE69132885T2 (de)

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FI96248C (fi) * 1993-05-06 1996-05-27 Nokia Mobile Phones Ltd Menetelmä pitkän aikavälin synteesisuodattimen toteuttamiseksi sekä synteesisuodatin puhekoodereihin
JP3321971B2 (ja) * 1994-03-10 2002-09-09 ソニー株式会社 音声信号処理方法
IT1271182B (it) * 1994-06-20 1997-05-27 Alcatel Italia Metodo per migliorare le prestazioni dei codificatori vocali
JP3237089B2 (ja) * 1994-07-28 2001-12-10 株式会社日立製作所 音響信号符号化復号方法
SE504010C2 (sv) * 1995-02-08 1996-10-14 Ericsson Telefon Ab L M Förfarande och anordning för prediktiv kodning av tal- och datasignaler
US5751907A (en) * 1995-08-16 1998-05-12 Lucent Technologies Inc. Speech synthesizer having an acoustic element database
EP0763818B1 (de) * 1995-09-14 2003-05-14 Kabushiki Kaisha Toshiba Verfahren und Filter zur Hervorbebung von Formanten
US5864798A (en) * 1995-09-18 1999-01-26 Kabushiki Kaisha Toshiba Method and apparatus for adjusting a spectrum shape of a speech signal
US5950151A (en) * 1996-02-12 1999-09-07 Lucent Technologies Inc. Methods for implementing non-uniform filters
US6463405B1 (en) 1996-12-20 2002-10-08 Eliot M. Case Audiophile encoding of digital audio data using 2-bit polarity/magnitude indicator and 8-bit scale factor for each subband
US6477496B1 (en) 1996-12-20 2002-11-05 Eliot M. Case Signal synthesis by decoding subband scale factors from one audio signal and subband samples from different one
US6516299B1 (en) 1996-12-20 2003-02-04 Qwest Communication International, Inc. Method, system and product for modifying the dynamic range of encoded audio signals
US6782365B1 (en) 1996-12-20 2004-08-24 Qwest Communications International Inc. Graphic interface system and product for editing encoded audio data
US5864813A (en) * 1996-12-20 1999-01-26 U S West, Inc. Method, system and product for harmonic enhancement of encoded audio signals
US5864820A (en) * 1996-12-20 1999-01-26 U S West, Inc. Method, system and product for mixing of encoded audio signals
US5845251A (en) * 1996-12-20 1998-12-01 U S West, Inc. Method, system and product for modifying the bandwidth of subband encoded audio data
JP3329216B2 (ja) * 1997-01-27 2002-09-30 日本電気株式会社 音声符号化装置及び音声復号装置
US7024355B2 (en) 1997-01-27 2006-04-04 Nec Corporation Speech coder/decoder
GB9714001D0 (en) * 1997-07-02 1997-09-10 Simoco Europ Limited Method and apparatus for speech enhancement in a speech communication system
US7072832B1 (en) * 1998-08-24 2006-07-04 Mindspeed Technologies, Inc. System for speech encoding having an adaptive encoding arrangement
SE9803698L (sv) 1998-10-26 2000-04-27 Ericsson Telefon Ab L M Metoder och anordningar i ett telekommunikationssystem
CA2252170A1 (en) * 1998-10-27 2000-04-27 Bruno Bessette A method and device for high quality coding of wideband speech and audio signals
DE19906223B4 (de) * 1999-02-15 2004-07-08 Siemens Ag Verfahren und Funk-Kommunikationssystem zur Sprachübertragung, insbesondere für digitale Mobilkummunikationssysteme
US6233552B1 (en) * 1999-03-12 2001-05-15 Comsat Corporation Adaptive post-filtering technique based on the Modified Yule-Walker filter
US7058572B1 (en) * 2000-01-28 2006-06-06 Nortel Networks Limited Reducing acoustic noise in wireless and landline based telephony
US6691085B1 (en) 2000-10-18 2004-02-10 Nokia Mobile Phones Ltd. Method and system for estimating artificial high band signal in speech codec using voice activity information
KR100503415B1 (ko) * 2002-12-09 2005-07-22 한국전자통신연구원 대역폭 확장을 이용한 ｃｅｌｐ 방식 코덱간의 상호부호화 장치 및 그 방법
US6983241B2 (en) * 2003-10-30 2006-01-03 Motorola, Inc. Method and apparatus for performing harmonic noise weighting in digital speech coders
WO2006009074A1 (ja) * 2004-07-20 2006-01-26 Matsushita Electric Industrial Co., Ltd. 音声復号化装置および補償フレーム生成方法

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US4694298A (en) * 1983-11-04 1987-09-15 Itt Gilfillan Adaptive, fault-tolerant narrowband filterbank
US4701954A (en) * 1984-03-16 1987-10-20 American Telephone And Telegraph Company, At&T Bell Laboratories Multipulse LPC speech processing arrangement
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US4969192A (en) * 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
FR2624675B1 (fr) * 1987-12-15 1990-05-11 Charbonnier Alain Dispositif et procede de traitement d'un signal de base echantillonne, en particulier representatif de sons
EP0331405B1 (de) * 1988-02-29 1996-11-27 Sony Corporation Verfahren und Einrichtung zur Digitalsignalverarbeitung

Also Published As

Publication number Publication date
DE69123500D1 (de) 1997-01-23
EP0732686B1 (de) 2001-12-19
EP0732686A2 (de) 1996-09-18
JP3234609B2 (ja) 2001-12-04
EP0465057B1 (de) 1996-12-11
JPH04233600A (ja) 1992-08-21
EP0465057A1 (de) 1992-01-08
DE69132885D1 (de) 2002-01-31
DE69132885T2 (de) 2002-08-01
EP0732686A3 (de) 1997-03-19
US5235669A (en) 1993-08-10

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