AR098557A2 - Aparato para realizar una transformación de señal de información y método para la generación de una representación de transformada superpuesta de una señal de información usando una transformada superpuesta causante de aliasing - Google Patents

Aparato para realizar una transformación de señal de información y método para la generación de una representación de transformada superpuesta de una señal de información usando una transformada superpuesta causante de aliasing

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Publication number
AR098557A2
AR098557A2 ARP140104448A ARP140104448A AR098557A2 AR 098557 A2 AR098557 A2 AR 098557A2 AR P140104448 A ARP140104448 A AR P140104448A AR P140104448 A ARP140104448 A AR P140104448A AR 098557 A2 AR098557 A2 AR 098557A2
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AR
Argentina
Prior art keywords
information signal
region
aliasing
superposed
retransformed
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ARP140104448A
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English (en)
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Fraunhofer Ges Forschung
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Publication of AR098557A2 publication Critical patent/AR098557A2/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
    • G10L19/04—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
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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
    • G10L19/04—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
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  • Engineering & Computer Science (AREA)
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  • Acoustics & Sound (AREA)
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Abstract

Un aparato y un método para realizar una transformación de señal de información. Un reconstructor de señal de información esta configurado para reconstruir, usando la cancelación del aliasing, una señal de información a partir de una representación de transformada superpuesta de la señal de información que comprende, para cada una de las regiones de superposición consecutivas de la señal de información, una transformada de una versión de ventana de la respectiva región, donde el reconstructor de señal de información está configurado para reconstruir la señal de información a una tasa de muestra que cambia en un borde 82 entre una región precedente 84 y una región sucesora 86 de la señal de información. El reconstructor de señal de información comprende un retransformador 70 configurado para la aplicación de una retransformación sobre la transformada 94 de la versión de ventana de la región precedente 84, de modo de obtener una retransformada 96 para la región precedente 84, y para la aplicación de una retransformación sobre la transformada de la versión de ventana de la región sucesora 86, de modo de obtener una retransformada 100 para la región sucesora 86, donde la retransformada 96 para la región precedente 84 y la retransformada 106 para la región sucesora 86 se superponen en una porción de cancelación del aliasing 102 en el borde 82 entre las regiones precedente y sucesora; un remuestreador 72 configurado para el remuestreado, mediante la interpolación, de la retransformada 96 para la región precedente 84, y/o de la retransformada 100 para la región sucesora 86, en la porción de cancelación del aliasing 102 de acuerdo con un cambio de tasa de muestra en el borde 82; y una combinadora 74, configurada para la realización de la cancelación del aliasing entre las retransformadas 96 y 100 para las regiones precedente y sucesora 84 y 86, obtenidas por medio del remuestreado en la porción de cancelación del aliasing 102.
ARP140104448A 2011-02-14 2014-11-27 Aparato para realizar una transformación de señal de información y método para la generación de una representación de transformada superpuesta de una señal de información usando una transformada superpuesta causante de aliasing AR098557A2 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161442632P 2011-02-14 2011-02-14
PCT/EP2012/052450 WO2012110473A1 (en) 2011-02-14 2012-02-14 Apparatus and method for encoding and decoding an audio signal using an aligned look-ahead portion

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AR098557A2 true AR098557A2 (es) 2016-06-01

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ARP120100475A AR085221A1 (es) 2011-02-14 2012-02-14 Aparato y metodo para codificar y decodificar una señal de audio utilizando una porcion alineada anticipada
ARP140104448A AR098557A2 (es) 2011-02-14 2014-11-27 Aparato para realizar una transformación de señal de información y método para la generación de una representación de transformada superpuesta de una señal de información usando una transformada superpuesta causante de aliasing
ARP150103655A AR102602A2 (es) 2011-02-14 2015-11-09 Decodificador de audio y método para decodificar una señal de audio utilizando una porción anticipada alineada

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US (1) US9047859B2 (es)
EP (3) EP2676265B1 (es)
JP (1) JP6110314B2 (es)
KR (2) KR101698905B1 (es)
CN (2) CN103503062B (es)
AR (3) AR085221A1 (es)
AU (1) AU2012217153B2 (es)
BR (1) BR112013020699B1 (es)
CA (1) CA2827272C (es)
ES (1) ES2725305T3 (es)
MX (1) MX2013009306A (es)
MY (1) MY160265A (es)
PL (1) PL2676265T3 (es)
PT (1) PT2676265T (es)
SG (1) SG192721A1 (es)
TR (1) TR201908598T4 (es)
TW (2) TWI563498B (es)
WO (1) WO2012110473A1 (es)
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