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
Links
- 238000003786 synthesis reaction Methods 0.000 title abstract 3
- 230000015572 biosynthetic process Effects 0.000 title 1
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
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.
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)
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)
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. |
-
1993
- 1993-10-29 CA CA002102080A patent/CA2102080C/en not_active Expired - Lifetime
- 1993-12-01 DE DE69326126T patent/DE69326126T2/en not_active Expired - Lifetime
- 1993-12-01 ES ES93309580T patent/ES2136649T3/en not_active Expired - Lifetime
- 1993-12-01 EP EP93309580A patent/EP0602826B1/en not_active Expired - Lifetime
- 1993-12-08 MX MX9307743A patent/MX9307743A/en not_active IP Right Cessation
- 1993-12-14 JP JP34203493A patent/JP3770925B2/en not_active Expired - Lifetime
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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