DK438189D0 - Digital talekoder - Google Patents

Digital talekoder

Info

Publication number
DK438189D0
DK438189D0 DK438189A DK438189A DK438189D0 DK 438189 D0 DK438189 D0 DK 438189D0 DK 438189 A DK438189 A DK 438189A DK 438189 A DK438189 A DK 438189A DK 438189 D0 DK438189 D0 DK 438189D0
Authority
DK
Denmark
Prior art keywords
digital voices
voices
digital
Prior art date
Application number
DK438189A
Other languages
English (en)
Other versions
DK176383B1 (da
DK438189A (da
Inventor
Ira Alan Gerson
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
Publication of DK438189D0 publication Critical patent/DK438189D0/da
Publication of DK438189A publication Critical patent/DK438189A/da
Application granted granted Critical
Publication of DK176383B1 publication Critical patent/DK176383B1/da

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
    • G10L19/135—Vector sum excited linear prediction [VSELP]
    • 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
    • G10L2019/0007—Codebook element generation
    • 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
    • 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
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/06—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being correlation coefficients

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)
DK198904381A 1988-01-07 1989-09-05 Fremgangsmåde og apparat til at generere en kodebog af excitationsvektorer samt talekoder og digitalt radiokommunikationsudstyr omfattende et kodebogvektorgenererende apparat DK176383B1 (da)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US07/141,446 US4817157A (en) 1988-01-07 1988-01-07 Digital speech coder having improved vector excitation source
US14144688 1988-01-07
US8804394 1988-12-29
PCT/US1988/004394 WO1989006419A1 (en) 1988-01-07 1988-12-29 Digital speech coder having improved vector excitation source

Publications (3)

Publication Number Publication Date
DK438189D0 true DK438189D0 (da) 1989-09-05
DK438189A DK438189A (da) 1989-11-07
DK176383B1 DK176383B1 (da) 2007-10-22

Family

ID=22495733

Family Applications (1)

Application Number Title Priority Date Filing Date
DK198904381A DK176383B1 (da) 1988-01-07 1989-09-05 Fremgangsmåde og apparat til at generere en kodebog af excitationsvektorer samt talekoder og digitalt radiokommunikationsudstyr omfattende et kodebogvektorgenererende apparat

Country Status (16)

Country Link
US (1) US4817157A (da)
EP (1) EP0372008B1 (da)
JP (2) JP2523031B2 (da)
KR (2) KR930010399B1 (da)
CN (1) CN1021938C (da)
AR (1) AR246631A1 (da)
AT (1) ATE123352T1 (da)
BR (1) BR8807414A (da)
CA (1) CA1279404C (da)
DE (1) DE3853916T2 (da)
DK (1) DK176383B1 (da)
FI (1) FI105292B (da)
IL (1) IL88465A (da)
MX (1) MX168558B (da)
NO (1) NO302849B1 (da)
WO (1) WO1989006419A1 (da)

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JPH02272500A (ja) * 1989-04-13 1990-11-07 Fujitsu Ltd コード駆動音声符号化方式
JPH02287399A (ja) * 1989-04-28 1990-11-27 Fujitsu Ltd ベクトル量子化制御方式
US5261027A (en) * 1989-06-28 1993-11-09 Fujitsu Limited Code excited linear prediction speech coding system
US5263119A (en) * 1989-06-29 1993-11-16 Fujitsu Limited Gain-shape vector quantization method and apparatus
JPH0332228A (ja) * 1989-06-29 1991-02-12 Fujitsu Ltd ゲイン―シェイプ・ベクトル量子化方式
US5097508A (en) * 1989-08-31 1992-03-17 Codex Corporation Digital speech coder having improved long term lag parameter determination
US5216745A (en) * 1989-10-13 1993-06-01 Digital Speech Technology, Inc. Sound synthesizer employing noise generator
US5241650A (en) * 1989-10-17 1993-08-31 Motorola, Inc. Digital speech decoder having a postfilter with reduced spectral distortion
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IL95753A (en) * 1989-10-17 1994-11-11 Motorola Inc Digits a digital speech
FR2654542B1 (fr) * 1989-11-14 1992-01-17 Thomson Csf Procede et dispositif de codage de filtres predicteurs de vocodeurs tres bas debit.
US5754976A (en) * 1990-02-23 1998-05-19 Universite De Sherbrooke Algebraic codebook with signal-selected pulse amplitude/position combinations for fast coding of speech
CA2010830C (en) * 1990-02-23 1996-06-25 Jean-Pierre Adoul Dynamic codebook for efficient speech coding based on algebraic codes
US5701392A (en) * 1990-02-23 1997-12-23 Universite De Sherbrooke Depth-first algebraic-codebook search for fast coding of speech
DE9006717U1 (de) * 1990-06-15 1991-10-10 Philips Patentverwaltung GmbH, 22335 Hamburg Anrufbeantworter für die digitale Aufzeichnung und Wiedergabe von Sprachsignalen
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US5293449A (en) * 1990-11-23 1994-03-08 Comsat Corporation Analysis-by-synthesis 2,4 kbps linear predictive speech codec
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IT1241358B (it) * 1990-12-20 1994-01-10 Sip Sistema di codifica del segnale vocale con sottocodice annidato
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US5179594A (en) * 1991-06-12 1993-01-12 Motorola, Inc. Efficient calculation of autocorrelation coefficients for CELP vocoder adaptive codebook
US5265190A (en) * 1991-05-31 1993-11-23 Motorola, Inc. CELP vocoder with efficient adaptive codebook search
US5255339A (en) * 1991-07-19 1993-10-19 Motorola, Inc. Low bit rate vocoder means and method
US5410632A (en) * 1991-12-23 1995-04-25 Motorola, Inc. Variable hangover time in a voice activity detector
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US5457783A (en) * 1992-08-07 1995-10-10 Pacific Communication Sciences, Inc. Adaptive speech coder having code excited linear prediction
US5357567A (en) * 1992-08-14 1994-10-18 Motorola, Inc. Method and apparatus for volume switched gain control
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JPH06186998A (ja) * 1992-12-15 1994-07-08 Nec Corp 音声符号化装置のコードブック探索方式
US5434947A (en) * 1993-02-23 1995-07-18 Motorola Method for generating a spectral noise weighting filter for use in a speech coder
WO1994023426A1 (en) * 1993-03-26 1994-10-13 Motorola Inc. Vector quantizer method and apparatus
US5491771A (en) * 1993-03-26 1996-02-13 Hughes Aircraft Company Real-time implementation of a 8Kbps CELP coder on a DSP pair
DE4315319C2 (de) * 1993-05-07 2002-11-14 Bosch Gmbh Robert Verfahren zur Aufbereitung von Daten, insbesondere von codierten Sprachsignalparametern
JP3685812B2 (ja) * 1993-06-29 2005-08-24 ソニー株式会社 音声信号送受信装置
US5659659A (en) * 1993-07-26 1997-08-19 Alaris, Inc. Speech compressor using trellis encoding and linear prediction
JP2626492B2 (ja) * 1993-09-13 1997-07-02 日本電気株式会社 ベクトル量子化装置
US5621852A (en) 1993-12-14 1997-04-15 Interdigital Technology Corporation Efficient codebook structure for code excited linear prediction coding
JP3119063B2 (ja) * 1994-01-11 2000-12-18 富士通株式会社 符号情報処理方式並びにその符号装置及び復号装置
US5487087A (en) * 1994-05-17 1996-01-23 Texas Instruments Incorporated Signal quantizer with reduced output fluctuation
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
US5602961A (en) * 1994-05-31 1997-02-11 Alaris, Inc. Method and apparatus for speech compression using multi-mode code excited linear predictive coding
TW271524B (da) 1994-08-05 1996-03-01 Qualcomm Inc
US5742734A (en) * 1994-08-10 1998-04-21 Qualcomm Incorporated Encoding rate selection in a variable rate vocoder
JPH08179796A (ja) * 1994-12-21 1996-07-12 Sony Corp 音声符号化方法
DE19600406A1 (de) * 1995-01-09 1996-07-18 Motorola Inc Verfahren und Vorrichtung zur Bereitstellung verschlüsselter Nachrichten
US5991725A (en) * 1995-03-07 1999-11-23 Advanced Micro Devices, Inc. System and method for enhanced speech quality in voice storage and retrieval systems
US5742640A (en) * 1995-03-07 1998-04-21 Diva Communications, Inc. Method and apparatus to improve PSTN access to wireless subscribers using a low bit rate system
JPH08272395A (ja) * 1995-03-31 1996-10-18 Nec Corp 音声符号化装置
US5673361A (en) * 1995-11-13 1997-09-30 Advanced Micro Devices, Inc. System and method for performing predictive scaling in computing LPC speech coding coefficients
US5864795A (en) * 1996-02-20 1999-01-26 Advanced Micro Devices, Inc. System and method for error correction in a correlation-based pitch estimator
US5696873A (en) * 1996-03-18 1997-12-09 Advanced Micro Devices, Inc. Vocoder system and method for performing pitch estimation using an adaptive correlation sample window
US5774836A (en) * 1996-04-01 1998-06-30 Advanced Micro Devices, Inc. System and method for performing pitch estimation and error checking on low estimated pitch values in a correlation based pitch estimator
US5778337A (en) * 1996-05-06 1998-07-07 Advanced Micro Devices, Inc. Dispersed impulse generator system and method for efficiently computing an excitation signal in a speech production model
US6047254A (en) * 1996-05-15 2000-04-04 Advanced Micro Devices, Inc. System and method for determining a first formant analysis filter and prefiltering a speech signal for improved pitch estimation
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US5751901A (en) * 1996-07-31 1998-05-12 Qualcomm Incorporated Method for searching an excitation codebook in a code excited linear prediction (CELP) coder
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Also Published As

Publication number Publication date
JP2820107B2 (ja) 1998-11-05
AR246631A1 (es) 1994-08-31
WO1989006419A1 (en) 1989-07-13
IL88465A (en) 1992-06-21
DE3853916D1 (de) 1995-07-06
MX168558B (es) 1993-05-31
KR930010399B1 (ko) 1993-10-23
CN1021938C (zh) 1993-08-25
DE3853916T2 (de) 1995-12-14
DK176383B1 (da) 2007-10-22
US4817157A (en) 1989-03-28
NO893202D0 (no) 1989-08-09
EP0372008A1 (en) 1990-06-13
DK438189A (da) 1989-11-07
NO302849B1 (no) 1998-04-27
FI105292B (fi) 2000-07-14
JP2523031B2 (ja) 1996-08-07
KR930005226B1 (ko) 1993-06-16
IL88465A0 (en) 1989-06-30
JPH08234799A (ja) 1996-09-13
JPH02502135A (ja) 1990-07-12
CA1279404C (en) 1991-01-22
ATE123352T1 (de) 1995-06-15
NO893202L (no) 1989-08-09
FI894151A0 (fi) 1989-09-04
BR8807414A (pt) 1990-05-15
EP0372008B1 (en) 1995-05-31
KR900700994A (ko) 1990-08-17
CN1035379A (zh) 1989-09-06

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