HK183496A - Code excited linear predictive vocoder and method of operation - Google Patents

Code excited linear predictive vocoder and method of operation

Info

Publication number
HK183496A
HK183496A HK183496A HK183496A HK183496A HK 183496 A HK183496 A HK 183496A HK 183496 A HK183496 A HK 183496A HK 183496 A HK183496 A HK 183496A HK 183496 A HK183496 A HK 183496A
Authority
HK
Hong Kong
Prior art keywords
vector
excitation vector
codebook
encoder
linear predictive
Prior art date
Application number
HK183496A
Other languages
English (en)
Inventor
Richard Harry Ketchum
Willem Bastiaan Kleijn
Daniel John Krasinski
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 HK183496A publication Critical patent/HK183496A/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
    • G10L2019/0002—Codebook adaptations
    • 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

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)
  • Cephalosporin Compounds (AREA)
HK183496A 1987-06-26 1996-10-03 Code excited linear predictive vocoder and method of operation HK183496A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/067,649 US4899385A (en) 1987-06-26 1987-06-26 Code excited linear predictive vocoder

Publications (1)

Publication Number Publication Date
HK183496A true HK183496A (en) 1996-10-11

Family

ID=22077431

Family Applications (1)

Application Number Title Priority Date Filing Date
HK183496A HK183496A (en) 1987-06-26 1996-10-03 Code excited linear predictive vocoder and method of operation

Country Status (9)

Country Link
US (1) US4899385A (de)
EP (1) EP0296763B1 (de)
JP (1) JP2657927B2 (de)
KR (1) KR0127901B1 (de)
AT (1) ATE127952T1 (de)
AU (1) AU596014B2 (de)
CA (1) CA1335841C (de)
DE (1) DE3854453T2 (de)
HK (1) HK183496A (de)

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Also Published As

Publication number Publication date
DE3854453T2 (de) 1996-02-29
KR890001021A (ko) 1989-03-17
JP2657927B2 (ja) 1997-09-30
DE3854453D1 (de) 1995-10-19
EP0296763B1 (de) 1995-09-13
CA1335841C (en) 1995-06-06
EP0296763A1 (de) 1988-12-28
JPS6454497A (en) 1989-03-01
AU596014B2 (en) 1990-04-12
US4899385A (en) 1990-02-06
AU1838488A (en) 1989-01-05
KR0127901B1 (ko) 1998-04-04
ATE127952T1 (de) 1995-09-15

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Legal Events

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PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)