DE69014156D1 - Verfahren und Einrichtung zur Sprachcodierung. - Google Patents

Verfahren und Einrichtung zur Sprachcodierung.

Info

Publication number
DE69014156D1
DE69014156D1 DE69014156T DE69014156T DE69014156D1 DE 69014156 D1 DE69014156 D1 DE 69014156D1 DE 69014156 T DE69014156 T DE 69014156T DE 69014156 T DE69014156 T DE 69014156T DE 69014156 D1 DE69014156 D1 DE 69014156D1
Authority
DE
Germany
Prior art keywords
vector
signal
speech
linear prediction
enabling
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.)
Expired - Lifetime
Application number
DE69014156T
Other languages
English (en)
Other versions
DE69014156T2 (de
Inventor
Tomohiko Taniguchi
Yoshinori Tanaka
Yasuji Ohta
Fumio Amano
Shigeyuki Unagami
Akira Sasama
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
Fujitsu 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 JP1168645A external-priority patent/JPH0333900A/ja
Priority claimed from JP1195302A external-priority patent/JPH03101800A/ja
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE69014156D1 publication Critical patent/DE69014156D1/de
Application granted granted Critical
Publication of DE69014156T2 publication Critical patent/DE69014156T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G10L2019/0003—Backward prediction of 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
    • G10L2019/0001—Codebooks
    • G10L2019/0004—Design or structure of the codebook
    • G10L2019/0005—Multi-stage vector quantisation
    • 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
    • G10L2019/0011—Long term prediction filters, i.e. pitch estimation
    • 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
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals

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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
DE69014156T 1989-06-28 1990-06-28 Verfahren und Einrichtung zur Sprachcodierung. Expired - Lifetime DE69014156T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP16618089 1989-06-28
JP1168645A JPH0333900A (ja) 1989-06-30 1989-06-30 音声符号化方式
JP1195302A JPH03101800A (ja) 1989-06-28 1989-07-27 音声符合化方式

Publications (2)

Publication Number Publication Date
DE69014156D1 true DE69014156D1 (de) 1994-12-22
DE69014156T2 DE69014156T2 (de) 1995-05-11

Family

ID=27322637

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69014156T Expired - Lifetime DE69014156T2 (de) 1989-06-28 1990-06-28 Verfahren und Einrichtung zur Sprachcodierung.

Country Status (3)

Country Link
EP (1) EP0405548B1 (de)
CA (1) CA2019801C (de)
DE (1) DE69014156T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI98104C (fi) * 1991-05-20 1997-04-10 Nokia Mobile Phones Ltd Menetelmä herätevektorin generoimiseksi ja digitaalinen puhekooderi
SG43128A1 (en) * 1993-06-10 1997-10-17 Oki Electric Ind Co Ltd Code excitation linear predictive (celp) encoder and decoder
EP1686563A3 (de) 1997-12-24 2007-02-07 Mitsubishi Denki Kabushiki Kaisha Verfahren und System zur Sprachdekodierung
PL2165328T3 (pl) 2007-06-11 2018-06-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Kodowanie i dekodowanie sygnału audio zawierającego część impulsową i część stacjonarną

Also Published As

Publication number Publication date
CA2019801A1 (en) 1990-12-28
CA2019801C (en) 1994-05-31
DE69014156T2 (de) 1995-05-11
EP0405548A2 (de) 1991-01-02
EP0405548A3 (en) 1991-08-28
EP0405548B1 (de) 1994-11-17

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