DK0550657T3 - Fremgangsmåde og system til kodning af analoge signaler - Google Patents

Fremgangsmåde og system til kodning af analoge signaler

Info

Publication number
DK0550657T3
DK0550657T3 DK91918459.8T DK91918459T DK0550657T3 DK 0550657 T3 DK0550657 T3 DK 0550657T3 DK 91918459 T DK91918459 T DK 91918459T DK 0550657 T3 DK0550657 T3 DK 0550657T3
Authority
DK
Denmark
Prior art keywords
analog signals
encoding analog
encoding
signals
analog
Prior art date
Application number
DK91918459.8T
Other languages
English (en)
Inventor
Patrick William Elliot
Timothy James Moulsley
Original Assignee
Philips Electronics Uk Ltd
Philips Electronics Nv
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 GB9021103A external-priority patent/GB2248372A/en
Priority claimed from GB919112143A external-priority patent/GB9112143D0/en
Application filed by Philips Electronics Uk Ltd, Philips Electronics Nv filed Critical Philips Electronics Uk Ltd
Application granted granted Critical
Publication of DK0550657T3 publication Critical patent/DK0550657T3/da

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/008—Vector quantisation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/16—Vocoder architecture
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L25/24—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 the cepstrum
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L25/27—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique
DK91918459.8T 1990-09-28 1991-09-25 Fremgangsmåde og system til kodning af analoge signaler DK0550657T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9021103A GB2248372A (en) 1990-09-28 1990-09-28 Coding/decoding analogue signals using master and two slave codebooks
GB919112143A GB9112143D0 (en) 1991-06-05 1991-06-05 A method of,and a system for,coding analogue signals

Publications (1)

Publication Number Publication Date
DK0550657T3 true DK0550657T3 (da) 1997-01-13

Family

ID=26297721

Family Applications (1)

Application Number Title Priority Date Filing Date
DK91918459.8T DK0550657T3 (da) 1990-09-28 1991-09-25 Fremgangsmåde og system til kodning af analoge signaler

Country Status (14)

Country Link
US (1) US5451951A (da)
EP (1) EP0550657B1 (da)
JP (1) JP3206661B2 (da)
KR (1) KR100195575B1 (da)
CN (1) CN1036886C (da)
AU (1) AU653969B2 (da)
BR (1) BR9106932A (da)
CA (1) CA2091754C (da)
DE (1) DE69121411T2 (da)
DK (1) DK0550657T3 (da)
ES (1) ES2093110T3 (da)
HK (1) HK1006874A1 (da)
SG (1) SG43974A1 (da)
WO (1) WO1992006470A1 (da)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5621852A (en) 1993-12-14 1997-04-15 Interdigital Technology Corporation Efficient codebook structure for code excited linear prediction coding
WO1995024776A2 (en) * 1994-03-11 1995-09-14 Philips Electronics N.V. Transmission system for quasi-periodic signals
US5774846A (en) * 1994-12-19 1998-06-30 Matsushita Electric Industrial Co., Ltd. Speech coding apparatus, linear prediction coefficient analyzing apparatus and noise reducing apparatus
US5652585A (en) * 1995-04-05 1997-07-29 Crystal Semiconductor Corp. Multiple function analog-to-digital converter with multiple serial outputs
US5822724A (en) * 1995-06-14 1998-10-13 Nahumi; Dror Optimized pulse location in codebook searching techniques for speech processing
JP3137176B2 (ja) * 1995-12-06 2001-02-19 日本電気株式会社 音声符号化装置
TW317051B (da) * 1996-02-15 1997-10-01 Philips Electronics Nv
DE69732746C5 (de) * 1996-02-15 2020-11-19 Koninklijke Philips N.V. Signalübertragungssystem mit verringerter komplexität
KR100389895B1 (ko) * 1996-05-25 2003-11-28 삼성전자주식회사 음성 부호화 및 복호화방법 및 그 장치
JP3707153B2 (ja) * 1996-09-24 2005-10-19 ソニー株式会社 ベクトル量子化方法、音声符号化方法及び装置
KR100198476B1 (ko) * 1997-04-23 1999-06-15 윤종용 노이즈에 견고한 스펙트럼 포락선 양자화기 및 양자화 방법
US6141639A (en) * 1998-06-05 2000-10-31 Conexant Systems, Inc. Method and apparatus for coding of signals containing speech and background noise
US6330531B1 (en) * 1998-08-24 2001-12-11 Conexant Systems, Inc. Comb codebook structure
US6480822B2 (en) * 1998-08-24 2002-11-12 Conexant Systems, Inc. Low complexity random codebook structure
US6493665B1 (en) * 1998-08-24 2002-12-10 Conexant Systems, Inc. Speech classification and parameter weighting used in codebook search
US6823303B1 (en) * 1998-08-24 2004-11-23 Conexant Systems, Inc. Speech encoder using voice activity detection in coding noise
DE19915009C2 (de) * 1999-04-01 2001-09-27 Siemens Ag Verfahren, Anordnung und ein computerlesbares Speichermedium zur rechnergestützen Ermittlung einer Zustandsgröße eines technischen Systems
US6842733B1 (en) 2000-09-15 2005-01-11 Mindspeed Technologies, Inc. Signal processing system for filtering spectral content of a signal for speech coding
US6850884B2 (en) * 2000-09-15 2005-02-01 Mindspeed Technologies, Inc. Selection of coding parameters based on spectral content of a speech signal
JP3404016B2 (ja) * 2000-12-26 2003-05-06 三菱電機株式会社 音声符号化装置及び音声符号化方法
US7457746B2 (en) * 2006-03-20 2008-11-25 Mindspeed Technologies, Inc. Pitch prediction for packet loss concealment
US9418671B2 (en) * 2013-08-15 2016-08-16 Huawei Technologies Co., Ltd. Adaptive high-pass post-filter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2065946B (en) * 1979-11-21 1983-08-24 Redland Automation Ltd Vehicle detiction installation
US4899385A (en) * 1987-06-26 1990-02-06 American Telephone And Telegraph Company Code excited linear predictive vocoder
JPH0225898A (ja) * 1988-07-15 1990-01-29 Toshiba Corp 音声認識装置
EP0364647B1 (en) * 1988-10-19 1995-02-22 International Business Machines Corporation Improvement to vector quantizing coder
US4963034A (en) * 1989-06-01 1990-10-16 Simon Fraser University Low-delay vector backward predictive coding of speech
GB2235354A (en) * 1989-08-16 1991-02-27 Philips Electronic Associated Speech coding/encoding using celp

Also Published As

Publication number Publication date
CA2091754A1 (en) 1992-03-29
WO1992006470A1 (en) 1992-04-16
CN1036886C (zh) 1997-12-31
KR100195575B1 (en) 1999-06-15
AU8856791A (en) 1992-04-28
ES2093110T3 (es) 1996-12-16
SG43974A1 (en) 1997-11-14
CA2091754C (en) 2002-01-29
JPH06501113A (ja) 1994-01-27
HK1006874A1 (en) 1999-03-19
CN1060378A (zh) 1992-04-15
EP0550657B1 (en) 1996-08-14
JP3206661B2 (ja) 2001-09-10
DE69121411D1 (de) 1996-09-19
AU653969B2 (en) 1994-10-20
EP0550657A1 (en) 1993-07-14
BR9106932A (pt) 1993-08-03
US5451951A (en) 1995-09-19
DE69121411T2 (de) 1997-02-20

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