DE69032026D1 - Digitaler sprachcodierer mit verbesserter sprachqualität unter anwendung einer vektoranregungsquelle - Google Patents

Digitaler sprachcodierer mit verbesserter sprachqualität unter anwendung einer vektoranregungsquelle

Info

Publication number
DE69032026D1
DE69032026D1 DE69032026T DE69032026T DE69032026D1 DE 69032026 D1 DE69032026 D1 DE 69032026D1 DE 69032026 T DE69032026 T DE 69032026T DE 69032026 T DE69032026 T DE 69032026T DE 69032026 D1 DE69032026 D1 DE 69032026D1
Authority
DE
Germany
Prior art keywords
excitation source
improved
encoder
vector excitation
digital
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
DE69032026T
Other languages
English (en)
Other versions
DE69032026T2 (de
Inventor
Ira Gerson
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of DE69032026D1 publication Critical patent/DE69032026D1/de
Publication of DE69032026T2 publication Critical patent/DE69032026T2/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
    • G10L13/00—Speech synthesis; Text to speech systems
    • 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
    • G10L2019/0004—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)
DE69032026T 1989-06-23 1990-05-02 Digitaler sprachcodierer mit verbesserter sprachqualität unter anwendung einer vektoranregungsquelle Expired - Lifetime DE69032026T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37054189A 1989-06-23 1989-06-23
PCT/US1990/002469 WO1991001545A1 (en) 1989-06-23 1990-05-02 Digital speech coder with vector excitation source having improved speech quality

Publications (2)

Publication Number Publication Date
DE69032026D1 true DE69032026D1 (de) 1998-03-12
DE69032026T2 DE69032026T2 (de) 1998-09-17

Family

ID=23460115

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69032026T Expired - Lifetime DE69032026T2 (de) 1989-06-23 1990-05-02 Digitaler sprachcodierer mit verbesserter sprachqualität unter anwendung einer vektoranregungsquelle

Country Status (10)

Country Link
EP (1) EP0484339B1 (de)
KR (1) KR950003557B1 (de)
CN (1) CN1023160C (de)
AU (1) AU638462B2 (de)
BR (1) BR9007467A (de)
CA (1) CA2060310C (de)
DE (1) DE69032026T2 (de)
IL (1) IL94119A (de)
NZ (1) NZ234180A (de)
WO (1) WO1991001545A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0451199A (ja) * 1990-06-18 1992-02-19 Fujitsu Ltd 音声符号化・復号化方式
JPH0451200A (ja) * 1990-06-18 1992-02-19 Fujitsu Ltd 音声符号化方式
IT1241358B (it) * 1990-12-20 1994-01-10 Sip Sistema di codifica del segnale vocale con sottocodice annidato
JP2776050B2 (ja) * 1991-02-26 1998-07-16 日本電気株式会社 音声符号化方式
DE4315315A1 (de) * 1993-05-07 1994-11-10 Ant Nachrichtentech Verfahren zur Vektorquantisierung insbesondere von Sprachsignalen
SG43128A1 (en) * 1993-06-10 1997-10-17 Oki Electric Ind Co Ltd Code excitation linear predictive (celp) encoder and decoder
JP3224955B2 (ja) * 1994-05-27 2001-11-05 株式会社東芝 ベクトル量子化装置およびベクトル量子化方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1252568A (en) * 1984-12-24 1989-04-11 Kazunori Ozawa Low bit-rate pattern encoding and decoding capable of reducing an information transmission rate
US4868867A (en) * 1987-04-06 1989-09-19 Voicecraft Inc. Vector excitation speech or audio coder for transmission or storage
US4899385A (en) * 1987-06-26 1990-02-06 American Telephone And Telegraph Company Code excited linear predictive vocoder

Also Published As

Publication number Publication date
AU5735990A (en) 1991-02-22
KR920702787A (ko) 1992-10-06
CA2060310A1 (en) 1990-12-24
DE69032026T2 (de) 1998-09-17
CN1023160C (zh) 1993-12-15
EP0484339A1 (de) 1992-05-13
EP0484339B1 (de) 1998-02-04
AU638462B2 (en) 1993-07-01
BR9007467A (pt) 1992-06-16
IL94119A (en) 1996-06-18
IL94119A0 (en) 1991-01-31
NZ234180A (en) 1993-11-25
CN1048278A (zh) 1991-01-02
WO1991001545A1 (en) 1991-02-07
EP0484339A4 (en) 1993-05-05
CA2060310C (en) 2001-07-17
KR950003557B1 (ko) 1995-04-14

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: SCHUMACHER & WILLSAU, PATENTANWALTSSOZIETAET, 80335 MUENCHEN