EP0694907A3 - Sprachkodierer - Google Patents

Sprachkodierer Download PDF

Info

Publication number
EP0694907A3
EP0694907A3 EP95111278A EP95111278A EP0694907A3 EP 0694907 A3 EP0694907 A3 EP 0694907A3 EP 95111278 A EP95111278 A EP 95111278A EP 95111278 A EP95111278 A EP 95111278A EP 0694907 A3 EP0694907 A3 EP 0694907A3
Authority
EP
European Patent Office
Prior art keywords
speech coder
coder
speech
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.)
Withdrawn
Application number
EP95111278A
Other languages
English (en)
French (fr)
Other versions
EP0694907A2 (de
Inventor
Keiichi Funaki
Kazunori Ozawa
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Publication of EP0694907A2 publication Critical patent/EP0694907A2/de
Publication of EP0694907A3 publication Critical patent/EP0694907A3/de
Withdrawn legal-status Critical Current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
    • 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
    • G10L2019/0011—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)
  • 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)
EP95111278A 1994-07-19 1995-07-18 Sprachkodierer Withdrawn EP0694907A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP187903/94 1994-07-19
JP6187903A JPH0830299A (ja) 1994-07-19 1994-07-19 音声符号化装置

Publications (2)

Publication Number Publication Date
EP0694907A2 EP0694907A2 (de) 1996-01-31
EP0694907A3 true EP0694907A3 (de) 1997-10-15

Family

ID=16214222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95111278A Withdrawn EP0694907A3 (de) 1994-07-19 1995-07-18 Sprachkodierer

Country Status (3)

Country Link
EP (1) EP0694907A3 (de)
JP (1) JPH0830299A (de)
CA (1) CA2154192A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08292798A (ja) * 1995-04-24 1996-11-05 Nec Corp 音声再生制御方式
JP3343082B2 (ja) 1998-10-27 2002-11-11 松下電器産業株式会社 Ｃｅｌｐ型音声符号化装置
JP3594854B2 (ja) 1999-11-08 2004-12-02 三菱電機株式会社 音声符号化装置及び音声復号化装置
USRE43209E1 (en) 1999-11-08 2012-02-21 Mitsubishi Denki Kabushiki Kaisha Speech coding apparatus and speech decoding apparatus
EP2099025A4 (de) * 2006-12-14 2010-12-22 Panasonic Corp Audiocodierungseinrichtung und audiocodierungsverfahren
JP4525694B2 (ja) * 2007-03-27 2010-08-18 パナソニック株式会社 音声符号化装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0415163A2 (de) * 1989-08-31 1991-03-06 Codex Corporation Digitaler Sprachkodierer mit verbesserter Bestimmung eines Langzeit-Verzögerungsparameters
EP0573398A2 (de) * 1992-06-01 1993-12-08 Hughes Aircraft Company C.E.L.P. - Vocoder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989002148A1 (en) * 1987-08-28 1989-03-09 British Telecommunications Public Limited Company Coded communications system
JP3254696B2 (ja) * 1991-09-25 2002-02-12 三菱電機株式会社 音声符号化装置、音声復号化装置および音源生成方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0415163A2 (de) * 1989-08-31 1991-03-06 Codex Corporation Digitaler Sprachkodierer mit verbesserter Bestimmung eines Langzeit-Verzögerungsparameters
EP0573398A2 (de) * 1992-06-01 1993-12-08 Hughes Aircraft Company C.E.L.P. - Vocoder

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CAMPBELL JR J P ET AL: "THE FEDERAL STANDARD 1016 4800 BPS CELP VOICE CODER", DIGITAL SIGNAL PROCESSING, vol. 1, no. 3, 1 July 1991 (1991-07-01), pages 145 - 155, XP000393612 *
SHIJUN YANG ET AL: "IMPROVED ADAPTIVE CELP CODER AT 5.2 KBIT/S", PROCEEDINGS OF THE REGION TEN CONFERENCE (TENCON), BEIJING, OCT. 19 - 21, 1993, vol. 3 OF 5, 19 October 1993 (1993-10-19), YUAN BAOZONG (ED ), pages 299 - 302, XP000521421 *

Also Published As

Publication number Publication date
JPH0830299A (ja) 1996-02-02
CA2154192A1 (en) 1996-01-20
EP0694907A2 (de) 1996-01-31

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