EP0694907A3 - Codeur de parole - Google Patents

Codeur de parole 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Withdrawn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
German (de)
English (en)
Other versions
EP0694907A2 (fr
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/fr
Publication of EP0694907A3 publication Critical patent/EP0694907A3/fr
Withdrawn legal-status Critical Current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 Codeur de parole Withdrawn EP0694907A3 (fr)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=16214222

Family Applications (1)

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EP95111278A Withdrawn EP0694907A3 (fr) 1994-07-19 1995-07-18 Codeur de parole

Country Status (3)

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

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 (fr) * 2006-12-14 2010-12-22 Panasonic Corp Dispositif de codage audio et procédé de codage audio
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 (fr) * 1989-08-31 1991-03-06 Codex Corporation Codeur digital de la parole avec détermination améliorée du paramètre de retard à long terme
EP0573398A2 (fr) * 1992-06-01 1993-12-08 Hughes Aircraft Company Vocodeur C.E.L.P.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989002148A1 (fr) * 1987-08-28 1989-03-09 British Telecommunications Public Limited Company Systeme de communications codees
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 (fr) * 1989-08-31 1991-03-06 Codex Corporation Codeur digital de la parole avec détermination améliorée du paramètre de retard à long terme
EP0573398A2 (fr) * 1992-06-01 1993-12-08 Hughes Aircraft Company Vocodeur C.E.L.P.

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
CA2154192A1 (fr) 1996-01-20
EP0694907A2 (fr) 1996-01-31
JPH0830299A (ja) 1996-02-02

Similar Documents

Publication Publication Date Title
EP0443548A3 (en) Speech coder
GB9419388D0 (en) Speech analysis
GB2291318B (en) Speech circuit
IL134122A0 (en) Speech coders
SG48874A1 (en) Speech synthesis
EP0701245A3 (fr) Dispositif de reconnaissance de la parole
EP0666558A3 (fr) Codage paramétrique de la parole.
EP0703677A3 (fr) Codeur perceptuel en sous-bandes
AU3702497A (en) Speech coding
EP0721605A4 (fr) Telesouffleur
EP0696793A3 (fr) Codeur de parole
EP1093230A4 (fr) Codeur vocal
GB2311919B (en) Speech processing
GB9225401D0 (en) Speech generation
SG43076A1 (en) Speech synthesis
GB2305829B (en) A coder
EP0440335A3 (en) Encoding speech
EP0741642A4 (fr) Codeur a barres manuel
AU698340B2 (en) Voice coder
GB9405352D0 (en) Henry
EP0419141A3 (en) Bit-rate reduction
SG52347A1 (en) Synthetic speech
GB9008497D0 (en) Speech aid
GB9615915D0 (en) Speech coding
SG47688A1 (en) Speech engine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19970902

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19980312