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DE3874427D1 - Linearer praediktionsvocoder mit code-anregung. - Google Patents

Linearer praediktionsvocoder mit code-anregung.

Info

Publication number
DE3874427D1
DE3874427D1 DE8888305526T DE3874427T DE3874427D1 DE 3874427 D1 DE3874427 D1 DE 3874427D1 DE 8888305526 T DE8888305526 T DE 8888305526T DE 3874427 T DE3874427 T DE 3874427T DE 3874427 D1 DE3874427 D1 DE 3874427D1
Authority
DE
Germany
Prior art keywords
vector
encoder
speech
candidate
candidate vector
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
DE8888305526T
Other languages
English (en)
Other versions
DE3874427T2 (de
Inventor
Richard Harry Ketchum
Willem Bastiaan Kleijn
Daniel John Krasinski
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.)
BlackBerry Ltd
Original Assignee
American Telephone and Telegraph Co 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22077439&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3874427(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of DE3874427D1 publication Critical patent/DE3874427D1/de
Application granted granted Critical
Publication of DE3874427T2 publication Critical patent/DE3874427T2/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
    • G10L19/04—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 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
    • G10L2019/0001—Codebooks
    • G10L2019/0004—Design or structure of the codebook
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0013—Codebook search algorithms
    • 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
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/06—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 correlation coefficients
    • 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
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals

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)
DE8888305526T 1987-06-26 1988-06-17 Linearer praediktionsvocoder mit code-anregung. Expired - Lifetime DE3874427T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/067,650 US4910781A (en) 1987-06-26 1987-06-26 Code excited linear predictive vocoder using virtual searching

Publications (2)

Publication Number Publication Date
DE3874427D1 true DE3874427D1 (de) 1992-10-15
DE3874427T2 DE3874427T2 (de) 1993-04-01

Family

ID=22077439

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8888305526T Expired - Lifetime DE3874427T2 (de) 1987-06-26 1988-06-17 Linearer praediktionsvocoder mit code-anregung.

Country Status (9)

Country Link
US (1) US4910781A (de)
EP (1) EP0296764B1 (de)
JP (1) JP2892011B2 (de)
KR (1) KR0128066B1 (de)
AT (1) ATE80489T1 (de)
AU (1) AU595719B2 (de)
CA (1) CA1336455C (de)
DE (1) DE3874427T2 (de)
HK (1) HK96493A (de)

Families Citing this family (46)

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US4899385A (en) * 1987-06-26 1990-02-06 American Telephone And Telegraph Company Code excited linear predictive vocoder
DE68922134T2 (de) * 1988-05-20 1995-11-30 Nippon Electric Co Überträgungssystem für codierte Sprache mit Codebüchern zur Synthetisierung von Komponenten mit niedriger Amplitude.
US5359696A (en) * 1988-06-28 1994-10-25 Motorola Inc. Digital speech coder having improved sub-sample resolution long-term predictor
EP0364647B1 (de) * 1988-10-19 1995-02-22 International Business Machines Corporation Vektorquantisierungscodierer
JPH02250100A (ja) * 1989-03-24 1990-10-05 Mitsubishi Electric Corp 音声符合化装置
IL95753A (en) * 1989-10-17 1994-11-11 Motorola Inc Digital speech coder
JP2834260B2 (ja) * 1990-03-07 1998-12-09 三菱電機株式会社 音声のスペクトル包絡パラメータ符号化装置
FR2668288B1 (fr) * 1990-10-19 1993-01-15 Di Francesco Renaud Procede de transmission, a bas debit, par codage celp d'un signal de parole et systeme correspondant.
JP2776050B2 (ja) * 1991-02-26 1998-07-16 日本電気株式会社 音声符号化方式
FI98104C (fi) * 1991-05-20 1997-04-10 Nokia Mobile Phones Ltd Menetelmä herätevektorin generoimiseksi ja digitaalinen puhekooderi
US5396576A (en) * 1991-05-22 1995-03-07 Nippon Telegraph And Telephone Corporation Speech coding and decoding methods using adaptive and random code books
US5187745A (en) * 1991-06-27 1993-02-16 Motorola, Inc. Efficient codebook search for CELP vocoders
US5265190A (en) * 1991-05-31 1993-11-23 Motorola, Inc. CELP vocoder with efficient adaptive codebook search
JP2609376B2 (ja) * 1991-06-28 1997-05-14 修 山田 金属間化合物およびセラミックスの製造方法
US5255339A (en) * 1991-07-19 1993-10-19 Motorola, Inc. Low bit rate vocoder means and method
US5267317A (en) * 1991-10-18 1993-11-30 At&T Bell Laboratories Method and apparatus for smoothing pitch-cycle waveforms
FI90477C (fi) * 1992-03-23 1994-02-10 Nokia Mobile Phones Ltd Puhesignaalin laadun parannusmenetelmä lineaarista ennustusta käyttävään koodausjärjestelmään
US5884253A (en) * 1992-04-09 1999-03-16 Lucent Technologies, Inc. Prototype waveform speech coding with interpolation of pitch, pitch-period waveforms, and synthesis filter
ES2042410B1 (es) * 1992-04-15 1997-01-01 Control Sys S A Metodo de codificacion y codificador de voz para equipos y sistemas de comunicacion.
US5513297A (en) * 1992-07-10 1996-04-30 At&T Corp. Selective application of speech coding techniques to input signal segments
US5357567A (en) * 1992-08-14 1994-10-18 Motorola, Inc. Method and apparatus for volume switched gain control
CA2105269C (en) * 1992-10-09 1998-08-25 Yair Shoham Time-frequency interpolation with application to low rate speech coding
CA2108623A1 (en) * 1992-11-02 1994-05-03 Yi-Sheng Wang Adaptive pitch pulse enhancer and method for use in a codebook excited linear prediction (celp) search loop
JP2746033B2 (ja) * 1992-12-24 1998-04-28 日本電気株式会社 音声復号化装置
US5491771A (en) * 1993-03-26 1996-02-13 Hughes Aircraft Company Real-time implementation of a 8Kbps CELP coder on a DSP pair
SG43128A1 (en) * 1993-06-10 1997-10-17 Oki Electric Ind Co Ltd Code excitation linear predictive (celp) encoder and decoder
US5623609A (en) * 1993-06-14 1997-04-22 Hal Trust, L.L.C. Computer system and computer-implemented process for phonology-based automatic speech recognition
US5517595A (en) * 1994-02-08 1996-05-14 At&T Corp. Decomposition in noise and periodic signal waveforms in waveform interpolation
FR2729245B1 (fr) * 1995-01-06 1997-04-11 Lamblin Claude Procede de codage de parole a prediction lineaire et excitation par codes algebriques
SE504010C2 (sv) * 1995-02-08 1996-10-14 Ericsson Telefon Ab L M Förfarande och anordning för prediktiv kodning av tal- och datasignaler
US5794199A (en) * 1996-01-29 1998-08-11 Texas Instruments Incorporated Method and system for improved discontinuous speech transmission
JP3364825B2 (ja) 1996-05-29 2003-01-08 三菱電機株式会社 音声符号化装置および音声符号化復号化装置
EP0925580B1 (de) * 1997-07-11 2003-11-05 Koninklijke Philips Electronics N.V. Übertrager mit verbessertem sprachkodierer und dekodierer
US6044339A (en) * 1997-12-02 2000-03-28 Dspc Israel Ltd. Reduced real-time processing in stochastic celp encoding
US6169970B1 (en) 1998-01-08 2001-01-02 Lucent Technologies Inc. Generalized analysis-by-synthesis speech coding method and apparatus
JP3319396B2 (ja) 1998-07-13 2002-08-26 日本電気株式会社 音声符号化装置ならびに音声符号化復号化装置
US6144939A (en) * 1998-11-25 2000-11-07 Matsushita Electric Industrial Co., Ltd. Formant-based speech synthesizer employing demi-syllable concatenation with independent cross fade in the filter parameter and source domains
KR100309873B1 (ko) * 1998-12-29 2001-12-17 강상훈 코드여기선형예측부호화기에서무성음검출에의한부호화방법
US6510407B1 (en) 1999-10-19 2003-01-21 Atmel Corporation Method and apparatus for variable rate coding of speech
US20030014263A1 (en) * 2001-04-20 2003-01-16 Agere Systems Guardian Corp. Method and apparatus for efficient audio compression
US7792670B2 (en) * 2003-12-19 2010-09-07 Motorola, Inc. Method and apparatus for speech coding
CN101009097B (zh) * 2007-01-26 2010-11-10 清华大学 1.2kb/s SELP低速率声码器抗信道误码保护方法
CN101261836B (zh) * 2008-04-25 2011-03-30 清华大学 基于过渡帧判决及处理的激励信号自然度提高方法
US9058818B2 (en) 2009-10-22 2015-06-16 Broadcom Corporation User attribute derivation and update for network/peer assisted speech coding
CA2979948C (en) * 2012-10-05 2019-10-22 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. An apparatus for encoding a speech signal employing acelp in the autocorrelation domain
US10041146B2 (en) 2014-11-05 2018-08-07 Companhia Brasileira de Metalurgia e Mineraçäo Processes for producing low nitrogen metallic chromium and chromium-containing alloys and the resulting products

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4720861A (en) * 1985-12-24 1988-01-19 Itt Defense Communications A Division Of Itt Corporation Digital speech coding circuit

Also Published As

Publication number Publication date
US4910781A (en) 1990-03-20
JPS6440899A (en) 1989-02-13
DE3874427T2 (de) 1993-04-01
CA1336455C (en) 1995-07-25
HK96493A (en) 1993-09-24
AU1837888A (en) 1989-01-05
AU595719B2 (en) 1990-04-05
EP0296764A1 (de) 1988-12-28
EP0296764B1 (de) 1992-09-09
JP2892011B2 (ja) 1999-05-17
KR890001022A (ko) 1989-03-17
KR0128066B1 (ko) 1998-04-02
ATE80489T1 (de) 1992-09-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: BLUMBACH, KRAMER & PARTNER, 65193 WIESBADEN

8327 Change in the person/name/address of the patent owner

Owner name: RESEARCH IN MOTION LTD., WATERLOO, ONTARIO, CA