AR072556A1 - Codificador y decodificador de audio y metodo para codificar marcos de senales de audio muestreadas - Google Patents

Codificador y decodificador de audio y metodo para codificar marcos de senales de audio muestreadas

Info

Publication number
AR072556A1
AR072556A1 ARP090102632A ARP090102632A AR072556A1 AR 072556 A1 AR072556 A1 AR 072556A1 AR P090102632 A ARP090102632 A AR P090102632A AR P090102632 A ARP090102632 A AR P090102632A AR 072556 A1 AR072556 A1 AR 072556A1
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AR
Argentina
Prior art keywords
information
framework
domain
frames
audio
Prior art date
Application number
ARP090102632A
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English (en)
Original Assignee
Fraunhofer Ges Forschung
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Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of AR072556A1 publication Critical patent/AR072556A1/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
    • G10L19/04—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

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

Un codificador de audio (100) adaptado para codificar marcos de una senal de audio muestreada para obtener marcos codificados, donde un marco comprende un numero de muestras de audio del dominio del tiempo, que comprende una etapa de análisis de codificacion predictiva (110) para determinar informacion sobre los coeficientes de un filtro de síntesis e informacion sobre el marco de dominio de prediccion con base en un marco de muestras de audio. El codificador de audio (100) además comprende un transformador del dominio de la frecuencia (120) para transformar un marco de muestras de audio al dominio de la frecuencia para obtener un espectro de marcos y un tomador de decisiones del dominio de codificacion (130) para decidir si los datos codificados para un marco se basan en la informacion sobre los coeficientes en la informacion sobre el marco de dominio de prediccion, o si se basan en el espectro de marcos. Más aun, el codificador de audio (100) comprende un controlador (140) para determinar una informacion de un coeficiente de conmutacion cuando el tomador de decisiones del dominio de codificacion decida que los datos codificados de un marco en curso se basan en la informacion de los coeficientes y la informacion sobre el marco de dominio de prediccion cuando los datos codificados de un marco previo han sido codificados con base en un espectro de marcos previo, y un codificador reductor de la redundancia (150) para codificar la informacion sobre el marco de dominio de prediccion, la informacion sobre los coeficientes, la informacion sobre el coeficiente de conmutacion y/o el espectro de marcos.
ARP090102632A 2008-07-11 2009-07-13 Codificador y decodificador de audio y metodo para codificar marcos de senales de audio muestreadas AR072556A1 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US7985108P 2008-07-11 2008-07-11
US10382508P 2008-10-08 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

Publications (1)

Publication Number Publication Date
AR072556A1 true AR072556A1 (es) 2010-09-08

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Family Applications (1)

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ARP090102632A AR072556A1 (es) 2008-07-11 2009-07-13 Codificador y decodificador de audio y metodo para codificar marcos de senales de audio muestreadas

Country Status (19)

Country Link
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) BR122021009252B1 (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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CN102105930A (zh) 2011-06-22
RU2498419C2 (ru) 2013-11-10
EP2311034A1 (en) 2011-04-20
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MY156654A (en) 2016-03-15
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CO6351832A2 (es) 2011-12-20
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CA2730315A1 (en) 2010-01-14
AU2009267394B2 (en) 2012-10-18
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HK1157489A1 (en) 2012-06-29
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