AR092928A1 - Codificador, decodificador y metodos para la adaptacion dinamica inversa compatible de la resolucion en tiempo/frecuencia en la codificacion espacial de objetos de audio - Google Patents

Codificador, decodificador y metodos para la adaptacion dinamica inversa compatible de la resolucion en tiempo/frecuencia en la codificacion espacial de objetos de audio

Info

Publication number
AR092928A1
AR092928A1 ARP130103630A ARP130103630A AR092928A1 AR 092928 A1 AR092928 A1 AR 092928A1 AR P130103630 A ARP130103630 A AR P130103630A AR P130103630 A ARP130103630 A AR P130103630A AR 092928 A1 AR092928 A1 AR 092928A1
Authority
AR
Argentina
Prior art keywords
analysis
downmix
window
time domain
decoder
Prior art date
Application number
ARP130103630A
Other languages
English (en)
Original Assignee
Fraunhofer Ges Forschung
Friedrich-Alexander-Universitaet Erlangen-Nuernberg
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, Friedrich-Alexander-Universitaet Erlangen-Nuernberg filed Critical Fraunhofer Ges Forschung
Publication of AR092928A1 publication Critical patent/AR092928A1/es

Links

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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • G10L19/02—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
    • G10L19/0204—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 subband decomposition
    • 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
    • G10L19/0204—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 subband decomposition
    • G10L19/0208—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
    • G10L19/02—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
    • G10L19/025—Detection of transients or attacks for time/frequency resolution switching
    • 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

Landscapes

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

Abstract

Se provee un decodificador para generar una señal de salida de audio que comprende uno o más canales de salida de audio a partir de una señal de downmix que comprende una pluralidad de muestras de downmix en el dominio del tiempo. La señal de downmix codifica dos o más señales de objeto de audio. El decodificador comprende un generador de secuencias de ventana (134) para determinar una pluralidad de ventanas de análisis, en donde cada una de las ventanas de análisis comprende una pluralidad de muestras de downmix en el dominio del tiempo de la señal de downmix. Cada ventana de análisis de la pluralidad de ventanas de análisis tiene una longitud de ventana que indica la cantidad de las muestras de downmix en el dominio del tiempo de dicha ventana de análisis. El generador de secuencias de ventana (134) está configurado para determinar la pluralidad de ventanas de análisis de manera tal que la longitud de ventana de cada una de las ventanas de análisis depende de una propiedad de señal de por lo menos una de las dos o más señales de objeto de audio. Además, el decodificador comprende un módulo de análisis t/f (135) para transformar la pluralidad de muestras de downmix en el dominio del tiempo de cada ventana de análisis de la pluralidad de ventanas de análisis desde un dominio del tiempo a un dominio de tiempo-frecuencia en función de la longitud de ventana de dicha ventana de análisis, para obtener un downmix transformado. Por otra parte, el decodificador comprende una unidad de desmezclado (136) para desmezclar el downmix transformado en base a información paramétrica lateral sobre las dos o más señales de objeto de audio para obtener la señal de salida de audio. Además, se provee un codificador.
ARP130103630A 2012-10-05 2013-10-07 Codificador, decodificador y metodos para la adaptacion dinamica inversa compatible de la resolucion en tiempo/frecuencia en la codificacion espacial de objetos de audio AR092928A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261710133P 2012-10-05 2012-10-05
EP13167481.4A EP2717265A1 (en) 2012-10-05 2013-05-13 Encoder, decoder and methods for backward compatible dynamic adaption of time/frequency resolution in spatial-audio-object-coding

Publications (1)

Publication Number Publication Date
AR092928A1 true AR092928A1 (es) 2015-05-06

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
ARP130103630A AR092928A1 (es) 2012-10-05 2013-10-07 Codificador, decodificador y metodos para la adaptacion dinamica inversa compatible de la resolucion en tiempo/frecuencia en la codificacion espacial de objetos de audio
ARP130103631A AR092929A1 (es) 2012-10-05 2013-10-07 Codificador, decodificador y metodos para la transformacion de ampliacion por acercamiento dependiente de señales en la codificacion espacial de objetos de audio

Family Applications After (1)

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ARP130103631A AR092929A1 (es) 2012-10-05 2013-10-07 Codificador, decodificador y metodos para la transformacion de ampliacion por acercamiento dependiente de señales en la codificacion espacial de objetos de audio

Country Status (17)

Country Link
US (2) US10152978B2 (es)
EP (4) EP2717262A1 (es)
JP (2) JP6268180B2 (es)
KR (2) KR101685860B1 (es)
CN (2) CN105190747B (es)
AR (2) AR092928A1 (es)
AU (1) AU2013326526B2 (es)
BR (2) BR112015007649B1 (es)
CA (2) CA2886999C (es)
ES (2) ES2880883T3 (es)
HK (1) HK1213361A1 (es)
MX (2) MX350691B (es)
MY (1) MY178697A (es)
RU (2) RU2625939C2 (es)
SG (1) SG11201502611TA (es)
TW (2) TWI539444B (es)
WO (2) WO2014053547A1 (es)

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RU2625939C2 (ru) 2017-07-19
JP2015535959A (ja) 2015-12-17
US20150279377A1 (en) 2015-10-01
HK1213361A1 (zh) 2016-06-30
EP2717262A1 (en) 2014-04-09
TWI541795B (zh) 2016-07-11
US20150221314A1 (en) 2015-08-06
CA2886999C (en) 2018-10-23
BR112015007649B1 (pt) 2023-04-25
RU2015116645A (ru) 2016-11-27
BR112015007650A2 (pt) 2019-11-12
MX350691B (es) 2017-09-13
TW201423729A (zh) 2014-06-16
EP2904611B1 (en) 2021-06-23
CA2887028A1 (en) 2014-04-10
JP6185592B2 (ja) 2017-08-23
WO2014053548A1 (en) 2014-04-10
CN105190747A (zh) 2015-12-23
RU2015116287A (ru) 2016-11-27
US9734833B2 (en) 2017-08-15
CN104798131A (zh) 2015-07-22
KR20150056875A (ko) 2015-05-27
CA2887028C (en) 2018-08-28
JP6268180B2 (ja) 2018-01-24
CN104798131B (zh) 2018-09-25
ES2880883T3 (es) 2021-11-25
EP2904610B1 (en) 2021-05-05
AU2013326526B2 (en) 2017-03-02
BR112015007650B1 (pt) 2022-05-17
MX351359B (es) 2017-10-11
US10152978B2 (en) 2018-12-11
MX2015004018A (es) 2015-07-06
MX2015004019A (es) 2015-07-06
CA2886999A1 (en) 2014-04-10
KR101689489B1 (ko) 2016-12-23
KR101685860B1 (ko) 2016-12-12
KR20150065852A (ko) 2015-06-15
TW201419266A (zh) 2014-05-16
ES2873977T3 (es) 2021-11-04
JP2015535960A (ja) 2015-12-17
MY178697A (en) 2020-10-20
TWI539444B (zh) 2016-06-21
BR112015007649A2 (pt) 2022-07-19
EP2904610A1 (en) 2015-08-12
EP2904611A1 (en) 2015-08-12
CN105190747B (zh) 2019-01-04
WO2014053547A1 (en) 2014-04-10
AU2013326526A1 (en) 2015-05-28
RU2639658C2 (ru) 2017-12-21
AR092929A1 (es) 2015-05-06
EP2717265A1 (en) 2014-04-09
SG11201502611TA (en) 2015-05-28

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