ES2136649T3 - TIME SHIFT FOR CODING WITH SYNTHESIS ANALYSIS. - Google Patents

TIME SHIFT FOR CODING WITH SYNTHESIS ANALYSIS.

Info

Publication number
ES2136649T3
ES2136649T3 ES93309580T ES93309580T ES2136649T3 ES 2136649 T3 ES2136649 T3 ES 2136649T3 ES 93309580 T ES93309580 T ES 93309580T ES 93309580 T ES93309580 T ES 93309580T ES 2136649 T3 ES2136649 T3 ES 2136649T3
Authority
ES
Spain
Prior art keywords
original signal
signal
trial
analysis
coding
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
ES93309580T
Other languages
Spanish (es)
Inventor
Willem Bastiaan Kleijn
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.)
AT&T Corp
Original Assignee
AT&T 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 AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of ES2136649T3 publication Critical patent/ES2136649T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G10L2019/0001—Codebooks
    • G10L2019/0002—Codebook adaptations
    • 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
    • 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)
  • 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)

Abstract

SE PRESENTA UNA TECNICA GENERALIZADA DE ANALISIS-POR-SINTESIS. ILUSTRATIVAMENTE, SE IDENTIFICA UNA SECCION DE UNA SEÑAL ORIGINAL QUE CONTIENE UNA ENERGIA MAXIMA LOCAL. SE SELECCIONA UNA PLURALIDAD DE SEGMENTOS DE LA SEÑAL ORIGINAL QUE CONTIENEN LA ENERGIA MAXIMA LOCAL EN BASE A UNA PLURALIDAD DE DESPLAZAMIENTOS DE TIEMPO. ESTOS SEGMENTOS SON DENOMINADOS "TRIAL ORIGINAL SIGNAL". CADA "TRIAL ORIGINAL SIGNAL" SE COMPARA CON UNA SEÑAL SINTETIZADA DE UNA TABLA DE CODIGOS ADAPTATIVA Y SE EVALUA UNA MEDIDA DE LA SIMILARIDAD (POR EJ. UNA RELACION CRUZADA) ENTRE ESTAS SEÑALES. UNA "TRIAL ORIGINAL SIGNAL" PARA SU USO EN LA CODIFICACION SE DETERMINA EN BASE A UNA O MAS MEDIDAS EVALUADAS DE SIMILARIDAD. SE GENERA UNA SEÑAL QUE REFLEJA UNA REPRESENTACION CODIFICADA DE LA SEÑAL ORIGINAL EN BASE A UNA O MAS "TRIAL ORIGINAL SIGNAL" DETERMINADAS. LA SEÑAL QUE REFLEJA UNA REPRESENTACION CODIFICADA DE LA SEÑAL ORIGINAL PUEDE SER SUMINISTRADA POR UN CODIFICADOR DE ANALISIS-POR-SINTESIS TAL COMO UN CODIFICADORCELP.A GENERALIZED ANALYSIS-BY-SYNTHESIS TECHNIQUE IS PRESENTED. ILLUSTRATIVELY, A SECTION OF AN ORIGINAL SIGNAL CONTAINING A LOCAL MAXIMUM ENERGY IS IDENTIFIED. A PLURALITY OF ORIGINAL SIGNAL SEGMENTS CONTAINING LOCAL MAXIMUM ENERGY IS SELECTED ON THE BASIS OF A PLURALITY OF TIME DISPLACEMENTS. THESE SEGMENTS ARE CALLED "TRIAL ORIGINAL SIGNAL". EACH "TRIAL ORIGINAL SIGNAL" IS COMPARED TO A SYNTHESIZED SIGNAL FROM AN ADAPTIVE CODE TABLE AND A MEASUREMENT OF SIMILARITY (FOR EXAMPLE A CROSS RELATION) IS ASSESSED BETWEEN THESE SIGNALS. AN "ORIGINAL SIGNAL TRIAL" FOR USE IN ENCODING IS DETERMINED BASED ON ONE OR MORE EVALUATED MEASURES OF SIMILARITY. A SIGNAL IS GENERATED THAT REFLECTS A CODED REPRESENTATION OF THE ORIGINAL SIGNAL BASED ON ONE OR MORE DETERMINED "TRIAL ORIGINAL SIGNAL". THE SIGNAL THAT REFLECTS A CODED REPRESENTATION OF THE ORIGINAL SIGNAL MAY BE SUPPLIED BY AN ANALYSIS-BY-SYNTHESIS ENCODER SUCH AS A CELL ENCODER.

ES93309580T 1992-12-14 1993-12-01 TIME SHIFT FOR CODING WITH SYNTHESIS ANALYSIS. Expired - Lifetime ES2136649T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US99030992A 1992-12-14 1992-12-14

Publications (1)

Publication Number Publication Date
ES2136649T3 true ES2136649T3 (en) 1999-12-01

Family

ID=25536013

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93309580T Expired - Lifetime ES2136649T3 (en) 1992-12-14 1993-12-01 TIME SHIFT FOR CODING WITH SYNTHESIS ANALYSIS.

Country Status (6)

Country Link
EP (1) EP0602826B1 (en)
JP (1) JP3770925B2 (en)
CA (1) CA2102080C (en)
DE (1) DE69326126T2 (en)
ES (1) ES2136649T3 (en)
MX (1) MX9307743A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5704003A (en) * 1995-09-19 1997-12-30 Lucent Technologies Inc. RCELP coder
CA2213909C (en) * 1996-08-26 2002-01-22 Nec Corporation High quality speech coder at low bit rates
FI113903B (en) * 1997-05-07 2004-06-30 Nokia Corp Speech coding
JP4857468B2 (en) 2001-01-25 2012-01-18 ソニー株式会社 Data processing apparatus, data processing method, program, and recording medium
JP4857467B2 (en) 2001-01-25 2012-01-18 ソニー株式会社 Data processing apparatus, data processing method, program, and recording medium
JP3888097B2 (en) 2001-08-02 2007-02-28 松下電器産業株式会社 Pitch cycle search range setting device, pitch cycle search device, decoding adaptive excitation vector generation device, speech coding device, speech decoding device, speech signal transmission device, speech signal reception device, mobile station device, and base station device
CA2365203A1 (en) * 2001-12-14 2003-06-14 Voiceage Corporation A signal modification method for efficient coding of speech signals
FI118704B (en) 2003-10-07 2008-02-15 Nokia Corp Method and device for source coding
US7451091B2 (en) 2003-10-07 2008-11-11 Matsushita Electric Industrial Co., Ltd. Method for determining time borders and frequency resolutions for spectral envelope coding
US8744091B2 (en) 2010-11-12 2014-06-03 Apple Inc. Intelligibility control using ambient noise detection
SG11201503788UA (en) * 2012-11-13 2015-06-29 Samsung Electronics Co Ltd Method and apparatus for determining encoding mode, method and apparatus for encoding audio signals, and method and apparatus for decoding audio signals

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8902347A (en) * 1989-09-20 1991-04-16 Nederland Ptt METHOD FOR CODING AN ANALOGUE SIGNAL WITHIN A CURRENT TIME INTERVAL, CONVERTING ANALOGUE SIGNAL IN CONTROL CODES USABLE FOR COMPOSING AN ANALOGUE SIGNAL SYNTHESIGNAL.
CA2068526C (en) * 1990-09-14 1997-02-25 Tomohiko Taniguchi Speech coding system
ES2115646T3 (en) * 1991-10-25 1998-07-01 At & T Corp GENERAL METHOD AND APPARATUS OF VOCAL CODING THROUGH SYNTHESIS ANALYSIS.

Also Published As

Publication number Publication date
EP0602826B1 (en) 1999-08-25
JPH06214600A (en) 1994-08-05
CA2102080A1 (en) 1994-06-15
EP0602826A2 (en) 1994-06-22
MX9307743A (en) 1994-06-30
DE69326126T2 (en) 2000-07-06
JP3770925B2 (en) 2006-04-26
EP0602826A3 (en) 1994-12-07
CA2102080C (en) 1998-07-28
DE69326126D1 (en) 1999-09-30

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