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 (xx)
EP (1) EP0296764B1 (xx)
JP (1) JP2892011B2 (xx)
KR (1) KR0128066B1 (xx)
AT (1) ATE80489T1 (xx)
AU (1) AU595719B2 (xx)
CA (1) CA1336455C (xx)
DE (1) DE3874427T2 (xx)
HK (1) HK96493A (xx)

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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
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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
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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
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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
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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
ES2701402T3 (es) * 2012-10-05 2019-02-22 Fraunhofer Ges Forschung Aparato para codificar una señal de voz empleando ACELP en el dominio de autocorrelación
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

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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
EP0296764A1 (en) 1988-12-28
CA1336455C (en) 1995-07-25
JPS6440899A (en) 1989-02-13
ATE80489T1 (de) 1992-09-15
JP2892011B2 (ja) 1999-05-17
AU1837888A (en) 1989-01-05
AU595719B2 (en) 1990-04-05
US4910781A (en) 1990-03-20
DE3874427D1 (de) 1992-10-15
KR890001022A (ko) 1989-03-17
EP0296764B1 (en) 1992-09-09
DE3874427T2 (de) 1993-04-01
KR0128066B1 (ko) 1998-04-02

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Effective date: 20080616