EP1071082A3 - Vector quantization codebook generation method - Google Patents

Vector quantization codebook generation method Download PDF

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Publication number
EP1071082A3
EP1071082A3 EP00121467A EP00121467A EP1071082A3 EP 1071082 A3 EP1071082 A3 EP 1071082A3 EP 00121467 A EP00121467 A EP 00121467A EP 00121467 A EP00121467 A EP 00121467A EP 1071082 A3 EP1071082 A3 EP 1071082A3
Authority
EP
European Patent Office
Prior art keywords
vectors
generation method
vector quantization
quantization codebook
codebook generation
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
EP00121467A
Other languages
German (de)
French (fr)
Other versions
EP1071082B1 (en
EP1071082A2 (en
Inventor
Kazutoshi Yasunaga
Toshiyuki Morii
Taisuke Watanabe
Hiroyuki Ehara
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 JP29473896A external-priority patent/JP4003240B2/en
Priority claimed from JP31032496A external-priority patent/JP4006770B2/en
Priority claimed from JP03458297A external-priority patent/JP3174742B2/en
Priority claimed from JP03458397A external-priority patent/JP3700310B2/en
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority claimed from EP97911460A external-priority patent/EP0883107B9/en
Publication of EP1071082A2 publication Critical patent/EP1071082A2/en
Publication of EP1071082A3 publication Critical patent/EP1071082A3/en
Application granted granted Critical
Publication of EP1071082B1 publication Critical patent/EP1071082B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G10L19/135—Vector sum excited linear prediction [VSELP]

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)
  • Analogue/Digital Conversion (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

In a CELP type speech coder, the excitation is quantized by vectors from a random codebook. The random codebook is made of a fixed waveform storage section (181), followed by a vector rearranging unit (182). The rearranging section (182) shifts the vectors to positions determined to minimize the quantization distorsion using a pulse placement methodology of an algebraic coder. The vectors are summed (183) to generate the excitation code vector.
EP00121467A 1996-11-07 1997-11-06 Vector quantization codebook generation method and generator Expired - Lifetime EP1071082B1 (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP29473896 1996-11-07
JP29473896A JP4003240B2 (en) 1996-11-07 1996-11-07 Speech coding apparatus and speech decoding apparatus
JP31032496A JP4006770B2 (en) 1996-11-21 1996-11-21 Noise estimation device, noise reduction device, noise estimation method, and noise reduction method
JP31032496 1996-11-21
JP03458297A JP3174742B2 (en) 1997-02-19 1997-02-19 CELP-type speech decoding apparatus and CELP-type speech decoding method
JP03458397A JP3700310B2 (en) 1997-02-19 1997-02-19 Vector quantization apparatus and vector quantization method
JP3458297 1997-02-19
JP3458397 1997-02-19
EP97911460A EP0883107B9 (en) 1996-11-07 1997-11-06 Sound source vector generator, voice encoder, and voice decoder

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP97911460A Division EP0883107B9 (en) 1996-11-07 1997-11-06 Sound source vector generator, voice encoder, and voice decoder

Publications (3)

Publication Number Publication Date
EP1071082A2 EP1071082A2 (en) 2001-01-24
EP1071082A3 true EP1071082A3 (en) 2001-01-31
EP1071082B1 EP1071082B1 (en) 2002-05-08

Family

ID=27514441

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00121467A Expired - Lifetime EP1071082B1 (en) 1996-11-07 1997-11-06 Vector quantization codebook generation method and generator
EP01108523A Expired - Lifetime EP1132894B1 (en) 1996-11-07 1997-11-06 Vector quantisation codebook generation method

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP01108523A Expired - Lifetime EP1132894B1 (en) 1996-11-07 1997-11-06 Vector quantisation codebook generation method

Country Status (1)

Country Link
EP (2) EP1071082B1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5293449A (en) * 1990-11-23 1994-03-08 Comsat Corporation Analysis-by-synthesis 2,4 kbps linear predictive speech codec
EP0680032A2 (en) * 1994-04-21 1995-11-02 Nec Corporation Quantization of input vectors with and without rearrangement of vector elements of a candidate vector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5293449A (en) * 1990-11-23 1994-03-08 Comsat Corporation Analysis-by-synthesis 2,4 kbps linear predictive speech codec
EP0680032A2 (en) * 1994-04-21 1995-11-02 Nec Corporation Quantization of input vectors with and without rearrangement of vector elements of a candidate vector

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KIM S J ET AL: "A COMPLEXITY REDUCTION METHOD FOR VSELP CODING USING OVERLAPPED SPARSE BASIS VECTORS", PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING APPLICATIONS AND TECHNOLOGY, 18 October 1994 (1994-10-18), XP000866009 *
MILLAR D ET AL: "A MULTIPULSE SPEECH CODEC FOR DIGITAL CELLULAR MOBILE USE", PROCEEDINGS OF THE WORKSHOP ON SPEECH CODING FOR TELECOMMUNICATIONS,US,BOSTON, KLUWER, vol. -, 1989, pages 87 - 96, XP000419265 *

Also Published As

Publication number Publication date
EP1132894B1 (en) 2003-05-02
EP1132894A3 (en) 2001-09-19
EP1132894A2 (en) 2001-09-12
EP1071082B1 (en) 2002-05-08
EP1071082A2 (en) 2001-01-24

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