SG47586A1 - Speech coding - Google Patents

Speech coding

Info

Publication number
SG47586A1
SG47586A1 SG1996002965A SG1996002965A SG47586A1 SG 47586 A1 SG47586 A1 SG 47586A1 SG 1996002965 A SG1996002965 A SG 1996002965A SG 1996002965 A SG1996002965 A SG 1996002965A SG 47586 A1 SG47586 A1 SG 47586A1
Authority
SG
Singapore
Prior art keywords
products
ltp
speech
terms
prediction
Prior art date
Application number
SG1996002965A
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 SG47586A1 publication Critical patent/SG47586A1/en

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)
  • 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)
  • 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)
SG1996002965A 1990-12-21 1991-12-20 Speech coding SG47586A1 (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
SG47586A1 true SG47586A1 (en) 1998-04-17

Family

ID=26298156

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996002965A SG47586A1 (en) 1990-12-21 1991-12-20 Speech coding

Country Status (8)

Country Link
US (1) US6016468A (de)
EP (2) EP0964393A1 (de)
AT (1) ATE186607T1 (de)
DE (1) DE69131779T2 (de)
GB (1) GB2266822B (de)
HK (1) HK141196A (de)
SG (1) SG47586A1 (de)
WO (1) WO1992011627A2 (de)

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
CA2411227C (en) * 2002-07-03 2007-01-09 2012244 Ontario Inc. 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 (de) * 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 (en) * 1989-10-17 1994-02-15 Masami Akamine Speech coding system utilizing a recursive computation technique for improvement in processing speed
US5323486A (en) * 1990-09-14 1994-06-21 Fujitsu Limited Speech coding system having codebook storing differential vectors between each two adjoining code vectors
US5179594A (en) * 1991-06-12 1993-01-12 Motorola, Inc. Efficient calculation of autocorrelation coefficients for CELP vocoder adaptive codebook
US5187745A (en) * 1991-06-27 1993-02-16 Motorola, Inc. Efficient codebook search for CELP vocoders
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
DE69131779D1 (de) 1999-12-16
GB2266822B (en) 1995-05-10
ATE186607T1 (de) 1999-11-15
EP0563229A1 (de) 1993-10-06
HK141196A (en) 1996-08-09
US6016468A (en) 2000-01-18
GB2266822A (en) 1993-11-10
WO1992011627A3 (en) 1992-10-29
WO1992011627A2 (en) 1992-07-09
DE69131779T2 (de) 2004-09-09
EP0563229B1 (de) 1999-11-10
EP0964393A1 (de) 1999-12-15
GB9314064D0 (en) 1993-09-08

Similar Documents

Publication Publication Date Title
CA2103785A1 (en) Speech coder and method having spectral interpolation and fast codebook search
JP2957588B2 (ja) スピーチコーディング
CA2135629A1 (en) Multi-segment vector quantizer for a speech coder suitable for use in a radiotelephone
US5893061A (en) Method of synthesizing a block of a speech signal in a celp-type coder
ATE127952T1 (de) Celp vocoder und anwendungsverfahren.
EP0992982A3 (de) Verfahren zur Erzeugung eines Vektorquantisierungs-codebuchs
RU97117357A (ru) Речевой кодер с линейным предсказанием и использованием анализа через синтез
SG123392G (en) Digital speech sinusoidal vocoder with transmission of only a subset of harmonics
GB2266822B (en) Speech coding
CA2051304A1 (en) Speech coding and decoding system
CA2037899C (en) Digital speech coder having improved long-term predictor
EP0137532A3 (en) Multi-pulse excited linear predictive speech coder
DE3569165D1 (en) Method of and device for speech signal coding and decoding by vector quantization techniques
NO933940D0 (no) Fremgangsmaate og anordning for koding av et inngangssignal ved bruk av en celp soekesloeyfe
GB2280828A (en) Method for generating a spectral noise weighting filter for use in a speech coder
CA2084338A1 (en) Method for Speech Coding and Voice-Coder
CA2090205A1 (en) Speech coding system
JPS57125999A (en) Voice synthesizer
Lee et al. Cost-effective implementation of ITU-T G. 723.1 on a DSP chip
CA2124713A1 (en) Long Term Predictor
DE68915057T2 (de) Kodierungsverfahren und linearer Prädiktionssprachkodierer.
JP3174779B2 (ja) 拡散音源ベクトル生成装置及び拡散音源ベクトル生成方法
KR950016102A (ko) 씨이엘피(celp) 보코더에서의 부호화 방법
Changchun et al. A real-time implementation of 4.2 Kb/s celp speech coding
JP3174781B2 (ja) 拡散音源ベクトル生成装置及び拡散音源ベクトル生成方法