HK141196A - Speech coding - Google Patents

Speech coding

Info

Publication number
HK141196A
HK141196A HK141196A HK141196A HK141196A HK 141196 A HK141196 A HK 141196A HK 141196 A HK141196 A HK 141196A HK 141196 A HK141196 A HK 141196A HK 141196 A HK141196 A HK 141196A
Authority
HK
Hong Kong
Prior art keywords
products
ltp
speech
terms
prediction
Prior art date
Application number
HK141196A
Other languages
English (en)
Inventor
Daniel Kenneth Freeman
Wing-Tak-Kenneth Wong
Andrew Gordon Davis
Original Assignee
British Telecomm
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
Priority claimed from GB909027757A external-priority patent/GB9027757D0/en
Priority claimed from GB919118214A external-priority patent/GB9118214D0/en
Application filed by British Telecomm filed Critical British Telecomm
Publication of HK141196A publication Critical patent/HK141196A/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
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • 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
    • G10L2019/0013—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
    • 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
    • G10L2019/0014—Selection criteria for distances

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
HK141196A 1990-12-21 1996-08-01 Speech coding HK141196A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909027757A GB9027757D0 (en) 1990-12-21 1990-12-21 Speech coding
GB919118214A GB9118214D0 (en) 1991-08-23 1991-08-23 Speech coding

Publications (1)

Publication Number Publication Date
HK141196A true HK141196A (en) 1996-08-09

Family

ID=26298156

Family Applications (1)

Application Number Title Priority Date Filing Date
HK141196A HK141196A (en) 1990-12-21 1996-08-01 Speech coding

Country Status (8)

Country Link
US (1) US6016468A (fr)
EP (2) EP0563229B1 (fr)
AT (1) ATE186607T1 (fr)
DE (1) DE69131779T2 (fr)
GB (1) GB2266822B (fr)
HK (1) HK141196A (fr)
SG (1) SG47586A1 (fr)
WO (1) WO1992011627A2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9118217D0 (en) * 1991-08-23 1991-10-09 British Telecomm Speech processing apparatus
US5794180A (en) * 1996-04-30 1998-08-11 Texas Instruments Incorporated Signal quantizer wherein average level replaces subframe steady-state levels
US6324501B1 (en) * 1999-08-18 2001-11-27 At&T Corp. Signal dependent speech modifications
DE10140507A1 (de) * 2001-08-17 2003-02-27 Philips Corp Intellectual Pty Verfahren für die algebraische Codebook-Suche eines Sprachsignalkodierers
US7240001B2 (en) 2001-12-14 2007-07-03 Microsoft Corporation Quality improvement techniques in an audio encoder
US7269548B2 (en) * 2002-07-03 2007-09-11 Research In Motion Ltd System and method of creating and using compact linguistic data
US7460990B2 (en) * 2004-01-23 2008-12-02 Microsoft Corporation Efficient coding of digital media spectral data using wide-sense perceptual similarity
US7885819B2 (en) 2007-06-29 2011-02-08 Microsoft Corporation Bitstream syntax for multi-process audio decoding
US9525427B1 (en) * 2015-09-11 2016-12-20 Tektronix, Inc. Test and measurement instrument including asynchronous time-interleaved digitizer using harmonic mixing and a linear time-periodic filter

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH581878A5 (fr) * 1974-07-22 1976-11-15 Gretag Ag
NL8500843A (nl) * 1985-03-22 1986-10-16 Koninkl Philips Electronics Nv Multipuls-excitatie lineair-predictieve spraakcoder.
US4787057A (en) * 1986-06-04 1988-11-22 General Electric Company Finite element analysis method using multiprocessor for matrix manipulations with special handling of diagonal elements
US4868867A (en) * 1987-04-06 1989-09-19 Voicecraft Inc. Vector excitation speech or audio coder for transmission or storage
FR2632758B1 (fr) * 1988-06-13 1991-06-07 Matra Communication Procede de codage et codeur de parole a prediction lineaire
CA2027705C (fr) * 1989-10-17 1994-02-15 Masami Akamine Systeme de codage de paroles utilisant un procede de calcul recursif afin d'ameliorer la vitesse de traitement
WO1992005541A1 (fr) * 1990-09-14 1992-04-02 Fujitsu Limited Systeme de codage de la parole
US5187745A (en) * 1991-06-27 1993-02-16 Motorola, Inc. Efficient codebook search for CELP vocoders
US5179594A (en) * 1991-06-12 1993-01-12 Motorola, Inc. Efficient calculation of autocorrelation coefficients for CELP vocoder adaptive codebook
US5371853A (en) * 1991-10-28 1994-12-06 University Of Maryland At College Park Method and system for CELP speech coding and codebook for use therewith

Also Published As

Publication number Publication date
WO1992011627A3 (fr) 1992-10-29
DE69131779D1 (de) 1999-12-16
WO1992011627A2 (fr) 1992-07-09
GB2266822A (en) 1993-11-10
EP0964393A1 (fr) 1999-12-15
GB9314064D0 (en) 1993-09-08
US6016468A (en) 2000-01-18
EP0563229A1 (fr) 1993-10-06
GB2266822B (en) 1995-05-10
SG47586A1 (en) 1998-04-17
DE69131779T2 (de) 2004-09-09
EP0563229B1 (fr) 1999-11-10
ATE186607T1 (de) 1999-11-15

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Legal Events

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

Effective date: 20031220

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