HK96493A - Code excited linear predictive vocoder and method of operation - Google Patents

Code excited linear predictive vocoder and method of operation

Info

Publication number
HK96493A
HK96493A HK964/93A HK96493A HK96493A HK 96493 A HK96493 A HK 96493A HK 964/93 A HK964/93 A HK 964/93A HK 96493 A HK96493 A HK 96493A HK 96493 A HK96493 A HK 96493A
Authority
HK
Hong Kong
Prior art keywords
vector
encoder
speech
candidate
linear predictive
Prior art date
Application number
HK964/93A
Other languages
English (en)
Inventor
Richard Harry Ketchum
Willem Bastiaan Kleijn
Daniel John Krasinski
Original Assignee
American Telephone & Telegraph
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=HK96493(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by American Telephone & Telegraph filed Critical American Telephone & Telegraph
Publication of HK96493A publication Critical patent/HK96493A/xx

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)
HK964/93A 1987-06-26 1993-09-16 Code excited linear predictive vocoder and method of operation HK96493A (en)

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 (1)

Publication Number Publication Date
HK96493A true HK96493A (en) 1993-09-24

Family

ID=22077439

Family Applications (1)

Application Number Title Priority Date Filing Date
HK964/93A HK96493A (en) 1987-06-26 1993-09-16 Code excited linear predictive vocoder and method of operation

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899385A (en) * 1987-06-26 1990-02-06 American Telephone And Telegraph Company Code excited linear predictive vocoder
CA1321646C (en) * 1988-05-20 1993-08-24 Eisuke Hanada Coded speech communication system having code books for synthesizing small-amplitude components
US5359696A (en) * 1988-06-28 1994-10-25 Motorola Inc. Digital speech coder having improved sub-sample resolution long-term predictor
DE3853161T2 (de) * 1988-10-19 1995-08-17 Ibm 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 Digits a digital speech
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
US5265190A (en) * 1991-05-31 1993-11-23 Motorola, Inc. CELP vocoder with efficient adaptive codebook search
US5187745A (en) * 1991-06-27 1993-02-16 Motorola, Inc. Efficient codebook search for CELP vocoders
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
US5727122A (en) * 1993-06-10 1998-03-10 Oki Electric Industry Co., Ltd. Code excitation linear predictive (CELP) encoder and decoder and code excitation linear predictive coding method
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
CN1145925C (zh) * 1997-07-11 2004-04-14 皇家菲利浦电子有限公司 具有改进语音编码器和解码器的发射机
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
US8447619B2 (en) * 2009-10-22 2013-05-21 Broadcom Corporation User attribute distribution for network/peer assisted speech coding
MX347921B (es) * 2012-10-05 2017-05-17 Fraunhofer Ges Forschung Un aparato para la codificacion de una señal de voz que emplea prediccion lineal excitada por codigos algebraico en el dominio de autocorrelacion.
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
ATE80489T1 (de) 1992-09-15
DE3874427D1 (de) 1992-10-15
KR890001022A (ko) 1989-03-17
US4910781A (en) 1990-03-20
AU1837888A (en) 1989-01-05
JPS6440899A (en) 1989-02-13
DE3874427T2 (de) 1993-04-01
JP2892011B2 (ja) 1999-05-17
AU595719B2 (en) 1990-04-05
EP0296764A1 (de) 1988-12-28
KR0128066B1 (ko) 1998-04-02
EP0296764B1 (de) 1992-09-09
CA1336455C (en) 1995-07-25

Similar Documents

Publication Publication Date Title
HK96493A (en) Code excited linear predictive vocoder and method of operation
HK183496A (en) Code excited linear predictive vocoder and method of operation
US6345248B1 (en) Low bit-rate speech coder using adaptive open-loop subframe pitch lag estimation and vector quantization
EP0770990A3 (de) Verfahren und Vorrichtung zur Sprachkodierung und -dekodierung
US20100211386A1 (en) Method for manufacturing a semiconductor package
JPS6413199A (en) Inprovement in method for compression of speed digitally coded speech or audio signal
EP0773533B1 (de) Verfahren zur Synthetisierung eines Sprachsignalblocks in einem CELP-Kodierer
KR940012931A (ko) 코드북 여기 선형 예측 서치 루프 용도의 적응 피치 펄스 강화기
EP0462559A3 (en) Speech coding and decoding system
IL128285A0 (en) Method and apparatus for searching an excitation codebook in a code excited linear prediction (clep) coder
DE69129385D1 (de) Sprachkodiersystem
EP1041541A4 (de) Celp sprachkodierer
CA2090205A1 (en) Speech coding system
Taumi et al. Low-delay CELP with multi-pulse VQ and fast search for GSM EFR
ATE218741T1 (de) Lineare vorhersage durch impulsanregung
JP2538450B2 (ja) 音声の励振信号符号化・復号化方法
Yasunaga et al. Dispersed-pulse codebook and its application to a 4 kb/s speech coder
Akamine et al. CELP coding with an adaptive density pulse excitation model
DE68915057D1 (de) Kodierungsverfahren und linearer Prädiktionssprachkodierer.
KR970031381A (ko) 코드 여기 선형 예측 부호화의 잡음 코드북 작성 방법
JPH06130996A (ja) コード励振線形予測符号化装置及び復号化装置
JPH07271397A (ja) 音声符号化装置
Perkis et al. A good quality, low complexity 4.8 kbit/s stochastic multipulse coder
Galand et al. Complexity reduction of CELP coders
KR970031372A (ko) 정규 여기펄스 검색법을 이용한 CELP 보코더의 불규칙 코드북 검색방법(Codebook search method using RPE technique in the CELP vocoder)

Legal Events

Date Code Title Description
PF Patent in force
PE Patent expired

Effective date: 20080616