DE69426860T2 - Sprachcodierer und Verfahren zum Suchen von Codebüchern - Google Patents

Sprachcodierer und Verfahren zum Suchen von Codebüchern

Info

Publication number
DE69426860T2
DE69426860T2 DE69426860T DE69426860T DE69426860T2 DE 69426860 T2 DE69426860 T2 DE 69426860T2 DE 69426860 T DE69426860 T DE 69426860T DE 69426860 T DE69426860 T DE 69426860T DE 69426860 T2 DE69426860 T2 DE 69426860T2
Authority
DE
Germany
Prior art keywords
speech coder
codebooks
searching
searching codebooks
coder
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 - Fee Related
Application number
DE69426860T
Other languages
English (en)
Other versions
DE69426860D1 (de
Inventor
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
Priority claimed from JP5310522A external-priority patent/JP3024467B2/ja
Priority claimed from JP06032104A external-priority patent/JP3092436B2/ja
Application filed by NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE69426860D1 publication Critical patent/DE69426860D1/de
Publication of DE69426860T2 publication Critical patent/DE69426860T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—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 spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • 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
    • G10L2019/0013—Codebook search algorithms

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
DE69426860T 1993-12-10 1994-12-09 Sprachcodierer und Verfahren zum Suchen von Codebüchern Expired - Fee Related DE69426860T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5310522A JP3024467B2 (ja) 1993-12-10 1993-12-10 音声符号化装置
JP06032104A JP3092436B2 (ja) 1994-03-02 1994-03-02 音声符号化装置

Publications (2)

Publication Number Publication Date
DE69426860D1 DE69426860D1 (de) 2001-04-19
DE69426860T2 true DE69426860T2 (de) 2001-07-19

Family

ID=26370630

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69426860T Expired - Fee Related DE69426860T2 (de) 1993-12-10 1994-12-09 Sprachcodierer und Verfahren zum Suchen von Codebüchern

Country Status (4)

Country Link
US (1) US5633980A (de)
EP (1) EP0657874B1 (de)
CA (1) CA2137756C (de)
DE (1) DE69426860T2 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3237089B2 (ja) * 1994-07-28 2001-12-10 株式会社日立製作所 音響信号符号化復号方法
KR970011727B1 (en) * 1994-11-09 1997-07-14 Daewoo Electronics Co Ltd Apparatus for encoding of the audio signal
JP2776277B2 (ja) * 1994-12-08 1998-07-16 日本電気株式会社 音声符号化装置
FR2729247A1 (fr) * 1995-01-06 1996-07-12 Matra Communication Procede de codage de parole a analyse par synthese
JPH08292797A (ja) * 1995-04-20 1996-11-05 Nec Corp 音声符号化装置
JP3308764B2 (ja) * 1995-05-31 2002-07-29 日本電気株式会社 音声符号化装置
JP3616432B2 (ja) * 1995-07-27 2005-02-02 日本電気株式会社 音声符号化装置
JP3196595B2 (ja) * 1995-09-27 2001-08-06 日本電気株式会社 音声符号化装置
JP3092653B2 (ja) * 1996-06-21 2000-09-25 日本電気株式会社 広帯域音声符号化装置及び音声復号装置並びに音声符号化復号装置
US8306811B2 (en) * 1996-08-30 2012-11-06 Digimarc Corporation Embedding data in audio and detecting embedded data in audio
US7024355B2 (en) * 1997-01-27 2006-04-04 Nec Corporation Speech coder/decoder
JP3063668B2 (ja) * 1997-04-04 2000-07-12 日本電気株式会社 音声符号化装置及び復号装置
DE19729494C2 (de) 1997-07-10 1999-11-04 Grundig Ag Verfahren und Anordnung zur Codierung und/oder Decodierung von Sprachsignalen, insbesondere für digitale Diktiergeräte
CA2239294A1 (en) * 1998-05-29 1999-11-29 Majid Foodeei Methods and apparatus for efficient quantization of gain parameters in glpas speech coders
US6704705B1 (en) * 1998-09-04 2004-03-09 Nortel Networks Limited Perceptual audio coding
EP1221694B1 (de) * 1999-09-14 2006-07-19 Fujitsu Limited Sprachkodierer/dekodierer
US7010482B2 (en) * 2000-03-17 2006-03-07 The Regents Of The University Of California REW parametric vector quantization and dual-predictive SEW vector quantization for waveform interpolative coding
US7010480B2 (en) * 2000-09-15 2006-03-07 Mindspeed Technologies, Inc. Controlling a weighting filter based on the spectral content of a speech signal
US6801887B1 (en) * 2000-09-20 2004-10-05 Nokia Mobile Phones Ltd. Speech coding exploiting the power ratio of different speech signal components
DE10063079A1 (de) * 2000-12-18 2002-07-11 Infineon Technologies Ag Verfahren zum Erkennen von Identifikationsmustern
US6912495B2 (en) * 2001-11-20 2005-06-28 Digital Voice Systems, Inc. Speech model and analysis, synthesis, and quantization methods
JP5596341B2 (ja) * 2007-03-02 2014-09-24 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ 音声符号化装置および音声符号化方法
JP5256756B2 (ja) 2008-02-05 2013-08-07 パナソニック株式会社 Ａｄｐｃｍ音声伝送システムの音声処理装置およびその音声処理方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4912764A (en) * 1985-08-28 1990-03-27 American Telephone And Telegraph Company, At&T Bell Laboratories Digital speech coder with different excitation types
US5012517A (en) * 1989-04-18 1991-04-30 Pacific Communication Science, Inc. Adaptive transform coder having long term predictor
JPH0782359B2 (ja) * 1989-04-21 1995-09-06 三菱電機株式会社 音声符号化装置、音声復号化装置及び音声符号化・復号化装置
DE69029120T2 (de) * 1989-04-25 1997-04-30 Toshiba Kawasaki Kk Stimmenkodierer
EP0500961B1 (de) * 1990-09-14 1998-04-29 Fujitsu Limited Sprachkodierungsystem
JP2906646B2 (ja) * 1990-11-09 1999-06-21 松下電器産業株式会社 音声帯域分割符号化装置
JP2776050B2 (ja) * 1991-02-26 1998-07-16 日本電気株式会社 音声符号化方式
US5195168A (en) * 1991-03-15 1993-03-16 Codex Corporation Speech coder and method having spectral interpolation and fast codebook search
FI98104C (fi) * 1991-05-20 1997-04-10 Nokia Mobile Phones Ltd Menetelmä herätevektorin generoimiseksi ja digitaalinen puhekooderi
JPH06138896A (ja) * 1991-05-31 1994-05-20 Motorola Inc 音声フレームを符号化するための装置および方法
JP3141450B2 (ja) * 1991-09-30 2001-03-05 ソニー株式会社 オーディオ信号処理方法
JP3446216B2 (ja) * 1992-03-06 2003-09-16 ソニー株式会社 音声信号処理方法
US5432883A (en) * 1992-04-24 1995-07-11 Olympus Optical Co., Ltd. Voice coding apparatus with synthesized speech LPC code book
US5495555A (en) * 1992-06-01 1996-02-27 Hughes Aircraft Company High quality low bit rate celp-based speech codec

Also Published As

Publication number Publication date
US5633980A (en) 1997-05-27
DE69426860D1 (de) 2001-04-19
CA2137756A1 (en) 1995-06-11
EP0657874A1 (de) 1995-06-14
EP0657874B1 (de) 2001-03-14
CA2137756C (en) 2000-02-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee