CO6341672A2 - Aparato y metodo para la codificacion/decodificacion de una señal de audio utilizando un esquema de conmutacion alising - Google Patents

Aparato y metodo para la codificacion/decodificacion de una señal de audio utilizando un esquema de conmutacion alising

Info

Publication number
CO6341672A2
CO6341672A2 CO10164069A CO10164069A CO6341672A2 CO 6341672 A2 CO6341672 A2 CO 6341672A2 CO 10164069 A CO10164069 A CO 10164069A CO 10164069 A CO10164069 A CO 10164069A CO 6341672 A2 CO6341672 A2 CO 6341672A2
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CO
Colombia
Prior art keywords
block
sub
audio signal
domain
processed
Prior art date
Application number
CO10164069A
Other languages
English (en)
Inventor
Fuchs Guillaume
Jeremie Lecomte
Jens Hirschfeld
Gerald Schuller
Markus Multrus
Ralf Geiger
Stefan Bayer
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 CO6341672A2 publication Critical patent/CO6341672A2/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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • 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
    • G10L19/02—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
    • 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
    • G10L19/02—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
    • 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

Un aparato para la codificación de una señal de audio, que comprende una función de ventana (11), para someter a ventana un primer bloque de la señal de audio usando una ventana de análisis, donde la ventana de análisis tiene una porción de aliasing y una porción adicional. El aparato además comprende un procesador (12), para el procesamiento del primer subloque de la señal de audio asociado con la porción de aliasing, mediante la transformación del subloque de un dominio en un dominio diferente, después de la ventana del primer subloque para obtener un primer subloque procesado; y para el procesamiento de un segundo subloque de la señal de audio asociado con la otra porción, mediante la transformación del segundo subloque, del dominio en el dominio diferente, antes de someter a ventana el segundo subloque a fin de obtener un segundo subloque procesado. El aparato comprende, asimismo, un transformador (13), para la conversión del primer subloque procesado y el segundo subloque procesado, del dominio diferente en un dominio diferente adicional, usando el mismo principio de transformación de bloques, de manera de obtener un primer bloque convertido, que entonces puede ser comprimido usando cualquiera de los algoritmos de compresión de información bien conocidos. En consecuencia, puede obtenerse una conmutación críticamente muestreada entre dos modos de codificación, ya que las porciones de aliasing que se producen en dos dominios diferentes se hacen coincidir entre sí.
CO10164069A 2008-07-11 2010-12-29 Aparato y metodo para la codificacion/decodificacion de una señal de audio utilizando un esquema de conmutacion alising CO6341672A2 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7985208P 2008-07-11 2008-07-11

Publications (1)

Publication Number Publication Date
CO6341672A2 true CO6341672A2 (es) 2011-11-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CO10164069A CO6341672A2 (es) 2008-07-11 2010-12-29 Aparato y metodo para la codificacion/decodificacion de una señal de audio utilizando un esquema de conmutacion alising

Country Status (19)

Country Link
US (1) US8862480B2 (es)
EP (1) EP2301020B1 (es)
JP (1) JP5551693B2 (es)
KR (1) KR101250309B1 (es)
CN (1) CN102089812B (es)
AR (1) AR072479A1 (es)
AU (1) AU2009267518B2 (es)
BR (1) BRPI0910783B1 (es)
CA (1) CA2730355C (es)
CO (1) CO6341672A2 (es)
ES (1) ES2401487T3 (es)
HK (1) HK1155842A1 (es)
MX (1) MX2011000373A (es)
MY (1) MY152252A (es)
PL (1) PL2301020T3 (es)
RU (1) RU2492530C2 (es)
TW (1) TWI426503B (es)
WO (1) WO2010003532A1 (es)
ZA (1) ZA201009259B (es)

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Publication number Publication date
JP2011527446A (ja) 2011-10-27
KR20110040823A (ko) 2011-04-20
MX2011000373A (es) 2011-03-15
HK1155842A1 (en) 2012-05-25
KR101250309B1 (ko) 2013-04-04
ES2401487T3 (es) 2013-04-22
ZA201009259B (en) 2011-09-28
TW201011737A (en) 2010-03-16
EP2301020B1 (en) 2013-01-02
MY152252A (en) 2014-09-15
PL2301020T3 (pl) 2013-06-28
WO2010003532A1 (en) 2010-01-14
RU2011102426A (ru) 2012-07-27
BRPI0910783A2 (pt) 2020-11-03
BRPI0910783B1 (pt) 2024-02-27
CA2730355C (en) 2016-03-22
AU2009267518B2 (en) 2012-08-16
AR072479A1 (es) 2010-09-01
EP2301020A1 (en) 2011-03-30
US8862480B2 (en) 2014-10-14
CA2730355A1 (en) 2010-01-14
RU2492530C2 (ru) 2013-09-10
JP5551693B2 (ja) 2014-07-16
AU2009267518A1 (en) 2010-01-14
CN102089812A (zh) 2011-06-08
CN102089812B (zh) 2013-03-20
US20110173009A1 (en) 2011-07-14
TWI426503B (zh) 2014-02-11

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