MX353104B - Transición desde una codificación/decodificación por transformada hacia una codificación/decodificación predictiva. - Google Patents

Transición desde una codificación/decodificación por transformada hacia una codificación/decodificación predictiva.

Info

Publication number
MX353104B
MX353104B MX2016006253A MX2016006253A MX353104B MX 353104 B MX353104 B MX 353104B MX 2016006253 A MX2016006253 A MX 2016006253A MX 2016006253 A MX2016006253 A MX 2016006253A MX 353104 B MX353104 B MX 353104B
Authority
MX
Mexico
Prior art keywords
decoding
predictive
coding
frame
transition
Prior art date
Application number
MX2016006253A
Other languages
English (en)
Other versions
MX2016006253A (es
Inventor
Faure Julien
Ragot Stéphane
Original Assignee
Orange
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 Orange filed Critical Orange
Publication of MX2016006253A publication Critical patent/MX2016006253A/es
Publication of MX353104B publication Critical patent/MX353104B/es

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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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0212—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 spectral analysis, e.g. transform vocoders or subband vocoders using orthogonal transformation
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • 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
    • G10L19/173—Transcoding, i.e. converting between two coded representations avoiding cascaded coding-decoding
    • 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
    • G10L19/18—Vocoders using multiple modes
    • G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

La invención se refiere a un método de decodificación de una señal de audio digital que comprende las etapas de decodificación (E602) en conformidad con una decodificación por transformada inversa de una trama precedente de muestras de la señal digital recibida y codificada según una codificación por transformada, la decodificación (E608) según una decodificación predictiva de una trama en curso de muestras de la señal digital recibida y codificada según una codificación predictiva. La decodificación predictiva de la trama en curso es una decodificación predictiva de transición que no utiliza diccionario adaptativo que se deriva de la trama precedente y el método comprende, además, una etapa de reinicialización (E606) de al menos un estado de la decodificación predictiva a un valor por defecto predeterminado, una etapa de adición-solapamiento (E609) que combina un segmento de señal sintetizado mediante una decodificación predictiva de la trama en curso y un segmento de señal sintetizado mediante decodificación por transformada inversa, correspondiente a un segmento memorizado de la decodificación de la trama precedente. La invención se refiere, de forma correlativa, a un método de codificación que comprende una reinicialización de al menos un estado de la codificación predictiva a un valor por defecto predeterminado. Se refiere a un codificador y decodificador que ponen en práctica los métodos respectivos.
MX2016006253A 2013-11-15 2014-11-14 Transición desde una codificación/decodificación por transformada hacia una codificación/decodificación predictiva. MX353104B (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1361243A FR3013496A1 (fr) 2013-11-15 2013-11-15 Transition d'un codage/decodage par transformee vers un codage/decodage predictif
PCT/FR2014/052923 WO2015071613A2 (fr) 2013-11-15 2014-11-14 Transition d'un codage/décodage par transformée vers un codage/décodage prédictif

Publications (2)

Publication Number Publication Date
MX2016006253A MX2016006253A (es) 2016-09-07
MX353104B true MX353104B (es) 2017-12-19

Family

ID=50179701

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2016006253A MX353104B (es) 2013-11-15 2014-11-14 Transición desde una codificación/decodificación por transformada hacia una codificación/decodificación predictiva.

Country Status (11)

Country Link
US (1) US9984696B2 (es)
EP (1) EP3069340B1 (es)
JP (1) JP6568850B2 (es)
KR (2) KR102289004B1 (es)
CN (1) CN105723457B (es)
BR (1) BR112016010522B1 (es)
ES (1) ES2651988T3 (es)
FR (1) FR3013496A1 (es)
MX (1) MX353104B (es)
RU (1) RU2675216C1 (es)
WO (1) WO2015071613A2 (es)

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EP2988300A1 (en) * 2014-08-18 2016-02-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Switching of sampling rates at audio processing devices

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Also Published As

Publication number Publication date
KR102289004B1 (ko) 2021-08-10
WO2015071613A3 (fr) 2015-07-09
JP2017501432A (ja) 2017-01-12
US9984696B2 (en) 2018-05-29
FR3013496A1 (fr) 2015-05-22
US20160293173A1 (en) 2016-10-06
EP3069340B1 (fr) 2017-09-20
KR20160083890A (ko) 2016-07-12
BR112016010522A2 (es) 2017-08-08
JP6568850B2 (ja) 2019-08-28
KR20210077807A (ko) 2021-06-25
BR112016010522B1 (pt) 2022-09-06
RU2016123462A (ru) 2017-12-18
RU2675216C1 (ru) 2018-12-17
EP3069340A2 (fr) 2016-09-21
CN105723457A (zh) 2016-06-29
CN105723457B (zh) 2019-05-28
WO2015071613A2 (fr) 2015-05-21
ES2651988T3 (es) 2018-01-30
KR102388687B1 (ko) 2022-04-19
MX2016006253A (es) 2016-09-07

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