ES2558229T3 - Codificador y decodificador de audio para codificar tramas de señales de audio muestreadas - Google Patents

Codificador y decodificador de audio para codificar tramas de señales de audio muestreadas Download PDF

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Publication number
ES2558229T3
ES2558229T3 ES09777044.0T ES09777044T ES2558229T3 ES 2558229 T3 ES2558229 T3 ES 2558229T3 ES 09777044 T ES09777044 T ES 09777044T ES 2558229 T3 ES2558229 T3 ES 2558229T3
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domain
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spectrum
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Jérémie Lecomte
Philippe Gournay
Stefan Bayer
Markus Multrus
Nikolaus Rettelbach
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VoiceAge Corp
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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VoiceAge Corp
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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    • 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
    • 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

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  • 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

Un codificador de audio (100) adaptado para codificar tramas de una señal de audio muestreada para obtener tramas codificadas, en el que una trama comprende un número de muestras de audio del dominio del tiempo, que comprende: una etapa de análisis de codificación predictiva (110) para determinar información sobre los coeficientes de un filtro de síntesis e información sobre una trama de dominio de predicción basándose en una trama de muestras de audio; un transformador del dominio de la frecuencia (120) para transformar una trama de muestras de audio al dominio de la frecuencia para obtener un espectro de tramas; un tomador de decisiones del dominio de codificación (130) para decidir si los datos codificados para una trama están basados en la información sobre los coeficientes y en la información sobre la trama de dominio de predicción, o están basados en el espectro de tramas; un controlador (140) para determinar la información sobre un coeficiente de conmutación cuando el tomador de decisiones del dominio de codificación decide que los datos codificados de una trama actual están basados en la información sobre los coeficientes y la información sobre la trama de dominio de predicción cuando los datos codificados de una trama previa se codificaron basándose en un espectro de tramas previo obtenido mediante el transformador del dominio de la frecuencia; y un codificador reductor de la redundancia (150) para codificar la información sobre la trama de dominio de predicción, la información sobre los coeficientes, la información sobre el coeficiente de conmutación y/o el espectro de tramas, en el que la información sobre los coeficientes de conmutación comprende una información que posibilita una iniciación de una etapa de síntesis predictiva, y el controlador (140) está adaptado para determinar la información sobre el coeficiente de conmutación basándose en una versión filtrada de paso alto de un espectro de trama decodificado de la trama previa.

Description

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Claims (1)

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ES09777044.0T 2008-07-11 2009-07-08 Codificador y decodificador de audio para codificar tramas de señales de audio muestreadas Active ES2558229T3 (es)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US79851 1979-09-28
US7985108P 2008-07-11 2008-07-11
US10382508P 2008-10-08 2008-10-08
US103825 2008-10-08
PCT/EP2009/004947 WO2010003663A1 (en) 2008-07-11 2009-07-08 Audio encoder and decoder for encoding frames of sampled audio signals

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Publication Number Publication Date
ES2558229T3 true ES2558229T3 (es) 2016-02-02

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US (1) US8751246B2 (es)
EP (1) EP2311034B1 (es)
JP (1) JP5369180B2 (es)
KR (1) KR101227729B1 (es)
CN (1) CN102105930B (es)
AR (1) AR072556A1 (es)
AU (1) AU2009267394B2 (es)
BR (3) BRPI0910784B1 (es)
CA (1) CA2730315C (es)
CO (1) CO6351832A2 (es)
ES (1) ES2558229T3 (es)
HK (1) HK1157489A1 (es)
MX (1) MX2011000369A (es)
MY (1) MY156654A (es)
PL (1) PL2311034T3 (es)
RU (1) RU2498419C2 (es)
TW (1) TWI441168B (es)
WO (1) WO2010003663A1 (es)
ZA (1) ZA201100090B (es)

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EP2311034B1 (en) 2015-11-04
CA2730315C (en) 2014-12-16
CN102105930A (zh) 2011-06-22
EP2311034A1 (en) 2011-04-20
BRPI0910784B1 (pt) 2022-02-15
BR122021009256B1 (pt) 2022-03-03
PL2311034T3 (pl) 2016-04-29
BRPI0910784A2 (pt) 2021-04-20
ZA201100090B (en) 2011-10-26
US8751246B2 (en) 2014-06-10
CA2730315A1 (en) 2010-01-14
AU2009267394A1 (en) 2010-01-14
AU2009267394B2 (en) 2012-10-18
JP5369180B2 (ja) 2013-12-18
MX2011000369A (es) 2011-07-29
KR20110052622A (ko) 2011-05-18
BR122021009252B1 (pt) 2022-03-03
WO2010003663A1 (en) 2010-01-14
AR072556A1 (es) 2010-09-08
CO6351832A2 (es) 2011-12-20
CN102105930B (zh) 2012-10-03
TW201009815A (en) 2010-03-01
MY156654A (en) 2016-03-15
JP2011527459A (ja) 2011-10-27
US20110173008A1 (en) 2011-07-14
TWI441168B (zh) 2014-06-11
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RU2498419C2 (ru) 2013-11-10
HK1157489A1 (en) 2012-06-29

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