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MX2013009301A - Aparato y metodo para ocultamiento de error en voz unificada con bajo retardo y codificacion de audio. - Google Patents

Aparato y metodo para ocultamiento de error en voz unificada con bajo retardo y codificacion de audio.

Info

Publication number
MX2013009301A
MX2013009301A MX2013009301A MX2013009301A MX2013009301A MX 2013009301 A MX2013009301 A MX 2013009301A MX 2013009301 A MX2013009301 A MX 2013009301A MX 2013009301 A MX2013009301 A MX 2013009301A MX 2013009301 A MX2013009301 A MX 2013009301A
Authority
MX
Mexico
Prior art keywords
filter
usac
low
spectral
audio coding
Prior art date
Application number
MX2013009301A
Other languages
English (en)
Inventor
Ralph Sperschneider
Jeremie Lecomte
Martin Dietz
Michael Schnabel
Original Assignee
Fraunhofer Ges Forschung
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 Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of MX2013009301A publication Critical patent/MX2013009301A/es

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    • 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
    • G10L19/028—Noise substitution, i.e. substituting non-tonal spectral components by noisy source
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    • G10L19/26—Pre-filtering or post-filtering

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

Se provee un aparato (100) para generar valores de reemplazo espectrales para una señal de audio. El aparato (100) comprende una unidad búfer (110) para almacenar valores espectrales previos relacionados con un cuadro de audio libre de error recibido previamente. Además, el aparato (100) comprende el generador de cuadro de ocultamiento (120) para generar los valores de reemplazo espectrales, cuando un cuadro de audio actual no ha sido recibido o es erróneo. El cuadro de audio libre de error recibido previamente comprende información del filtro, la información del filtro asocia un valor de estabilidad del filtro indicando una estabilidad de un filtro de predicción. El generador de cuadro de ocultamiento (120) se adapta para generar los valores de reemplazo espectrales basado en los valores espectrales previos y basado en el valor de estabilidad del filtro.
MX2013009301A 2011-02-14 2012-02-13 Aparato y metodo para ocultamiento de error en voz unificada con bajo retardo y codificacion de audio. MX2013009301A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161442632P 2011-02-14 2011-02-14
PCT/EP2012/052395 WO2012110447A1 (en) 2011-02-14 2012-02-13 Apparatus and method for error concealment in low-delay unified speech and audio coding (usac)

Publications (1)

Publication Number Publication Date
MX2013009301A true MX2013009301A (es) 2013-12-06

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US (1) US9384739B2 (es)
EP (1) EP2661745B1 (es)
JP (1) JP5849106B2 (es)
KR (1) KR101551046B1 (es)
CN (1) CN103620672B (es)
AR (1) AR085218A1 (es)
AU (1) AU2012217215B2 (es)
BR (1) BR112013020324B8 (es)
CA (1) CA2827000C (es)
ES (1) ES2539174T3 (es)
MX (1) MX2013009301A (es)
MY (1) MY167853A (es)
PL (1) PL2661745T3 (es)
RU (1) RU2630390C2 (es)
SG (1) SG192734A1 (es)
TW (1) TWI484479B (es)
WO (1) WO2012110447A1 (es)
ZA (1) ZA201306499B (es)

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ZA201306499B (en) 2014-05-28
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