CA2022677A1 - Vector quantization encoder and vector quantization decoder - Google Patents

Vector quantization encoder and vector quantization decoder

Info

Publication number
CA2022677A1
CA2022677A1 CA2022677A CA2022677A CA2022677A1 CA 2022677 A1 CA2022677 A1 CA 2022677A1 CA 2022677 A CA2022677 A CA 2022677A CA 2022677 A CA2022677 A CA 2022677A CA 2022677 A1 CA2022677 A1 CA 2022677A1
Authority
CA
Canada
Prior art keywords
vector quantization
encoder
decoder
codebooks
vector
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2022677A
Other languages
French (fr)
Other versions
CA2022677C (en
Inventor
Yoshinori Tanaka
Tomohiko Taniguchi
Fumio Amano
Yasuji Ohta
Shigeyuki Unagami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2022677A1 publication Critical patent/CA2022677A1/en
Application granted granted Critical
Publication of CA2022677C publication Critical patent/CA2022677C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/032—Quantisation or dequantisation of spectral components
    • G10L19/038—Vector quantisation, e.g. TwinVQ audio
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/008—Vector quantisation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3082—Vector coding

Abstract

VECTOR QUANTIZATION ENCODER AND
VECTOR QUANTIZATION DECODER

ABSTRACT OF THE DISCLOSURE
A vector quantization encoder and a vector quantization decoder compresses and decompresses speech signals, etc. The encoder or decoder comprises a plurality of codebooks each controlling a plurality of indexed code vectors of a different frequency band.
Each of the codebooks is provided with a synthesis filter for reproducing a signal wave shape based on a code vector provided by the corresponding codebook.
The encoder or decoder further comprises an adder for computing a sum of signal wave shapes reproduced by the synthesis filters. This arrangement can reduce the memory size of each codebook used for an encoding or a decoding process and an amount of operations of the encoding or decoding process.
CA002022677A 1989-08-04 1990-08-03 Vector quantization encoder and vector quantization decoder Expired - Fee Related CA2022677C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP01-202418 1989-08-04
JP1202418A JPH0365822A (en) 1989-08-04 1989-08-04 Vector quantization coder and vector quantization decoder

Publications (2)

Publication Number Publication Date
CA2022677A1 true CA2022677A1 (en) 1991-02-05
CA2022677C CA2022677C (en) 1994-05-31

Family

ID=16457181

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002022677A Expired - Fee Related CA2022677C (en) 1989-08-04 1990-08-03 Vector quantization encoder and vector quantization decoder

Country Status (5)

Country Link
US (1) US5151968A (en)
EP (1) EP0411655B1 (en)
JP (1) JPH0365822A (en)
CA (1) CA2022677C (en)
DE (1) DE69023411T2 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5323486A (en) * 1990-09-14 1994-06-21 Fujitsu Limited Speech coding system having codebook storing differential vectors between each two adjoining code vectors
US5271089A (en) * 1990-11-02 1993-12-14 Nec Corporation Speech parameter encoding method capable of transmitting a spectrum parameter at a reduced number of bits
CA2054849C (en) * 1990-11-02 1996-03-12 Kazunori Ozawa Speech parameter encoding method capable of transmitting a spectrum parameter at a reduced number of bits
JP3151874B2 (en) * 1991-02-26 2001-04-03 日本電気株式会社 Voice parameter coding method and apparatus
US5495555A (en) * 1992-06-01 1996-02-27 Hughes Aircraft Company High quality low bit rate celp-based speech codec
US5592227A (en) * 1994-09-15 1997-01-07 Vcom, Inc. Method and apparatus for compressing a digital signal using vector quantization
EP0704836B1 (en) * 1994-09-30 2002-03-27 Kabushiki Kaisha Toshiba Vector quantization apparatus
KR100322706B1 (en) * 1995-09-25 2002-06-20 윤종용 Encoding and decoding method of linear predictive coding coefficient
JP3680380B2 (en) * 1995-10-26 2005-08-10 ソニー株式会社 Speech coding method and apparatus
US5889891A (en) * 1995-11-21 1999-03-30 Regents Of The University Of California Universal codebook vector quantization with constrained storage
JP2914305B2 (en) * 1996-07-10 1999-06-28 日本電気株式会社 Vector quantizer
JP3357795B2 (en) * 1996-08-16 2002-12-16 株式会社東芝 Voice coding method and apparatus
US6081781A (en) * 1996-09-11 2000-06-27 Nippon Telegragh And Telephone Corporation Method and apparatus for speech synthesis and program recorded medium
KR100389897B1 (en) * 1996-10-31 2003-10-17 삼성전자주식회사 Method for predictive-linked quantization for split lsf vectors
US6385576B2 (en) 1997-12-24 2002-05-07 Kabushiki Kaisha Toshiba Speech encoding/decoding method using reduced subframe pulse positions having density related to pitch
SE521225C2 (en) * 1998-09-16 2003-10-14 Ericsson Telefon Ab L M Method and apparatus for CELP encoding / decoding
US6073093A (en) * 1998-10-14 2000-06-06 Lockheed Martin Corp. Combined residual and analysis-by-synthesis pitch-dependent gain estimation for linear predictive coders
GB2368761B (en) * 2000-10-30 2003-07-16 Motorola Inc Speech codec and methods for generating a vector codebook and encoding/decoding speech signals
KR100651712B1 (en) * 2003-07-10 2006-11-30 학교법인연세대학교 Wideband speech coder and method thereof, and Wideband speech decoder and method thereof
JP4009781B2 (en) * 2003-10-27 2007-11-21 カシオ計算機株式会社 Speech processing apparatus and speech coding method
US7587314B2 (en) * 2005-08-29 2009-09-08 Nokia Corporation Single-codebook vector quantization for multiple-rate applications
WO2011046098A1 (en) 2009-10-14 2011-04-21 川崎重工業株式会社 Engine supercharging device
US8323602B2 (en) 2010-07-08 2012-12-04 Air Products And Chemicals, Inc. Treatment of flue gas from an oxyfuel combustion process
US9390722B2 (en) * 2011-10-24 2016-07-12 Lg Electronics Inc. Method and device for quantizing voice signals in a band-selective manner

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631520A (en) * 1968-08-19 1971-12-28 Bell Telephone Labor Inc Predictive coding of speech signals
US4133976A (en) * 1978-04-07 1979-01-09 Bell Telephone Laboratories, Incorporated Predictive speech signal coding with reduced noise effects
US4220819A (en) * 1979-03-30 1980-09-02 Bell Telephone Laboratories, Incorporated Residual excited predictive speech coding system
US4472832A (en) * 1981-12-01 1984-09-18 At&T Bell Laboratories Digital speech coder
JPH0682280B2 (en) * 1985-08-02 1994-10-19 日本電気株式会社 Speech coding system
US4827517A (en) * 1985-12-26 1989-05-02 American Telephone And Telegraph Company, At&T Bell Laboratories Digital speech processor using arbitrary excitation coding
JPS6387034A (en) * 1986-09-30 1988-04-18 Matsushita Electric Ind Co Ltd Coding device
US4852179A (en) * 1987-10-05 1989-07-25 Motorola, Inc. Variable frame rate, fixed bit rate vocoding method
JPH01191510A (en) * 1988-01-27 1989-08-01 Nec Corp Weighting filter in auditory sense
JPH01243099A (en) * 1988-03-24 1989-09-27 Nec Corp System and device for speech encoding
US4907276A (en) * 1988-04-05 1990-03-06 The Dsp Group (Israel) Ltd. Fast search method for vector quantizer communication and pattern recognition systems
US5023910A (en) * 1988-04-08 1991-06-11 At&T Bell Laboratories Vector quantization in a harmonic speech coding arrangement
US4963034A (en) * 1989-06-01 1990-10-16 Simon Fraser University Low-delay vector backward predictive coding of speech
JPH0332228A (en) * 1989-06-29 1991-02-12 Fujitsu Ltd Gain-shape vector quantization system
US4963030A (en) * 1989-11-29 1990-10-16 California Institute Of Technology Distributed-block vector quantization coder

Also Published As

Publication number Publication date
US5151968A (en) 1992-09-29
EP0411655A2 (en) 1991-02-06
EP0411655A3 (en) 1992-02-26
EP0411655B1 (en) 1995-11-08
CA2022677C (en) 1994-05-31
JPH0365822A (en) 1991-03-20
DE69023411D1 (en) 1995-12-14
DE69023411T2 (en) 1996-05-02

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Legal Events

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Effective date: 20010803