ES2093110T3 - Un metodo y un sistema para codificar señales analogicas. - Google Patents

Un metodo y un sistema para codificar señales analogicas.

Info

Publication number
ES2093110T3
ES2093110T3 ES91918459T ES91918459T ES2093110T3 ES 2093110 T3 ES2093110 T3 ES 2093110T3 ES 91918459 T ES91918459 T ES 91918459T ES 91918459 T ES91918459 T ES 91918459T ES 2093110 T3 ES2093110 T3 ES 2093110T3
Authority
ES
Spain
Prior art keywords
sequences
signals
code book
orthogonalized
code
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 - Lifetime
Application number
ES91918459T
Other languages
English (en)
Inventor
Patrick William Elliot
Timothy James Moulsley
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.)
Koninklijke Philips NV
Original Assignee
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 NV filed Critical Philips Electronics NV
Application granted granted Critical
Publication of ES2093110T3 publication Critical patent/ES2093110T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 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
    • G10L19/083—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 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
    • G10L19/04—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 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
    • G10L2019/0007—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
    • G10L25/24—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 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
    • G10L25/27—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Selective Calling Equipment (AREA)
  • Error Detection And Correction (AREA)

Abstract

EN UNA PREDICCION LINEAL EXCITADA DE CODIGOS (CELP) LAS SECUENCIAS DEL SISTEMA QUE CODIFICAN LAS SEÑALES ANALOGICAS DE UN LIBRO DE CODIGOS MAESTRO (40), QUE PUEDE SER UN LIBRO DE CODIGOS UNIDIMENSIONAL, SE FILTRAN (42) Y SE ALMACENAN ENTONCES EN LIBROS DE CODIGOS ESCLAVOS (70, 72). LAS SEÑALES ANALOGICAS DE ENTRADA (20) SE FILTRAN (34, 36) Y SE SEPARAN ORTOGONALMENTE (66, 78, 80) CON SECUENCIAS DE LOS LIBROS DE CODIGOS ESCLAVOS Y SE SELECCIONA UN PAR OPTIMO DE SECUENCIAS. DESDE EL MOMENTO QUE LAS COMPARACIONES SON ORTOGONALES, PUEDEN SELECCIONARSE SECUENCIAS A PARTIR DE LIBROS DE CODIGOS Y PUEDEN COMPARARSE CON LAS SEÑALES ANALOGICAS FILTRADAS ENTRANTES DE FORMA COMPLETAMENTE INDEPENDIENTE. SECUENCIAS DE LONGITUD REDUCIDA DEL LIBRO DE CODIGOS MAESTRO PUEDEN COMPARARSE CON LAS SEÑALES ANALOGICAS ORTOGONALIZADAS DESDE EL MOMENTO QUE LAS SEÑALES ORTOGONALIZADAS CONTIENEN ALGUNAS REDUNDANCIAS. EL LIBRO DE CODIGOS MAESTRO NO NECESITA SER ORTOGONALIZADO EN ALGUNAS CIRCUNSTANCIAS. SON POSIBLES VARIOS MEDIOS DE ORTOGONALIZACION DE LAS SECUENCIAS INCLUYENDO LA SEPARACION EN SECUENCIAS PARES E IMPARES. SON POSIBLES ORTOGONALIZACIONES ADICIONALES, POR EJEMPLO PARA CONSEGUIR CUATRO COMPARACIONES.
ES91918459T 1990-09-28 1991-09-25 Un metodo y un sistema para codificar señales analogicas. Expired - Lifetime ES2093110T3 (es)

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
ES2093110T3 true ES2093110T3 (es) 1996-12-16

Family

ID=26297721

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91918459T Expired - Lifetime ES2093110T3 (es) 1990-09-28 1991-09-25 Un metodo y un sistema para codificar señales analogicas.

Country Status (13)

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

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
CN1099663C (zh) * 1994-03-11 2003-01-22 皇家菲利浦电子有限公司 准周期信号的传输系统
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 (es) * 1996-02-15 1997-10-01 Philips Electronics Nv
JP3970327B2 (ja) * 1996-02-15 2007-09-05 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴイ 複雑さが軽減された信号送信システム
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
US6823303B1 (en) * 1998-08-24 2004-11-23 Conexant Systems, Inc. Speech encoder using voice activity detection in coding noise
US6330531B1 (en) * 1998-08-24 2001-12-11 Conexant Systems, Inc. Comb codebook structure
US6493665B1 (en) * 1998-08-24 2002-12-10 Conexant Systems, Inc. Speech classification and parameter weighting used in codebook search
US6480822B2 (en) 1998-08-24 2002-11-12 Conexant Systems, Inc. Low complexity random codebook structure
DE19915009C2 (de) * 1999-04-01 2001-09-27 Siemens Ag Verfahren, Anordnung und ein computerlesbares Speichermedium zur rechnergestützen Ermittlung einer Zustandsgröße eines technischen Systems
US6850884B2 (en) * 2000-09-15 2005-02-01 Mindspeed Technologies, Inc. Selection of coding parameters based on spectral content of a speech signal
US6842733B1 (en) 2000-09-15 2005-01-11 Mindspeed Technologies, Inc. Signal processing system for filtering spectral content of a signal for speech coding
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
CA2091754C (en) 2002-01-29
SG43974A1 (en) 1997-11-14
EP0550657B1 (en) 1996-08-14
US5451951A (en) 1995-09-19
CN1060378A (zh) 1992-04-15
JP3206661B2 (ja) 2001-09-10
KR100195575B1 (en) 1999-06-15
EP0550657A1 (en) 1993-07-14
AU8856791A (en) 1992-04-28
DE69121411D1 (de) 1996-09-19
DK0550657T3 (da) 1997-01-13
AU653969B2 (en) 1994-10-20
WO1992006470A1 (en) 1992-04-16
JPH06501113A (ja) 1994-01-27
HK1006874A1 (en) 1999-03-19
DE69121411T2 (de) 1997-02-20
CN1036886C (zh) 1997-12-31
CA2091754A1 (en) 1992-03-29
BR9106932A (pt) 1993-08-03

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