AR100406A2 - SETUP AND METHOD CONFIGURED TO GENERATE A HIGH FREQUENCY COMPONENT OF AN AUDIO SIGNAL TO A SECOND FREQUENCY OF SAMPLING FROM A LOW FREQUENCY COMPONENT OF THE AUDIO SIGNAL TO A FIRST SAMPLING FREQUENCY - Google Patents

SETUP AND METHOD CONFIGURED TO GENERATE A HIGH FREQUENCY COMPONENT OF AN AUDIO SIGNAL TO A SECOND FREQUENCY OF SAMPLING FROM A LOW FREQUENCY COMPONENT OF THE AUDIO SIGNAL TO A FIRST SAMPLING FREQUENCY

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Publication number
AR100406A2
AR100406A2 ARP150101456A ARP150101456A AR100406A2 AR 100406 A2 AR100406 A2 AR 100406A2 AR P150101456 A ARP150101456 A AR P150101456A AR P150101456 A ARP150101456 A AR P150101456A AR 100406 A2 AR100406 A2 AR 100406A2
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Argentina
Prior art keywords
frequency component
analysis
signal
audio signal
sampling
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Application number
ARP150101456A
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Spanish (es)
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Dolby Int Ab
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Publication date
Application filed by Dolby Int Ab filed Critical Dolby Int Ab
Publication of AR100406A2 publication Critical patent/AR100406A2/en

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Abstract

El presente documento se relaciona con sistemas de codificación de audio que utilizan un método de transposición armónica para la reconstrucción de alta frecuencia (HFR), y con procesadores de efectos digitales, por ejemplo los denominados excitadores, donde la generación de distorsión armónica agrega brillo a la señal procesada. En particular, se describe un sistema configurado para generar un componente de alta frecuencia de una señal desde un componente de baja frecuencia de la señal. La disposición puede comprender un banco de filtro de análisis (501) configurado para proveer un conjunto de señales de sub-banda de análisis desde el componente de baja frecuencia de la señal; donde el conjunto de señales de sub-banda de análisis comprende al menos dos señales de sub-banda de análisis; donde el banco de filtro de análisis (501) posee una resolución de frecuencia de Df. La disposición además comprende una unidad de procesamiento no lineal (502) configurada para determinar un conjunto de señales de sub-banda de síntesis desde el conjunto de señales de sub-banda de análisis utilizando un orden de transposición P; donde el conjunto de señales de sub-banda de síntesis comprende una porción del conjunto de señales de sub-banda de análisis con fase desplazada por una cantidad derivada del orden de transposición P; y un banco de filtro de síntesis (504) configurado para generar el componente de alta frecuencia de la señal desde el conjunto de señales de sub-banda de síntesis; donde el banco de filtro de síntesis (504) posee una resolución de frecuencia de FDf; con F como factor de resolución, con F ³ 1; donde el orden de transposición P es diferente al factor de resolución F.This document relates to audio coding systems that use a harmonic transposition method for high frequency reconstruction (HFR), and digital effects processors, for example the so-called exciters, where the generation of harmonic distortion adds brightness to The processed signal. In particular, a system configured to generate a high frequency component of a signal from a low frequency component of the signal is described. The arrangement may comprise an analysis filter bank (501) configured to provide a set of sub-band analysis signals from the low frequency component of the signal; where the set of analysis subband signals comprises at least two analysis subband signals; where the analysis filter bank (501) has a frequency resolution of Df. The arrangement further comprises a non-linear processing unit (502) configured to determine a set of synthesis subband signals from the set of analysis subband signals using a transposition order P; wherein the set of synthesis sub-band signals comprises a portion of the set of sub-band analysis signals with phase shifted by an amount derived from the transposition order P; and a synthesis filter bank (504) configured to generate the high frequency component of the signal from the set of synthesis subband signals; where the synthesis filter bank (504) has a frequency resolution of FDf; with F as the resolution factor, with F ³ 1; where the transposition order P is different from the resolution factor F.

ARP150101456A 2009-05-27 2015-05-12 SETUP AND METHOD CONFIGURED TO GENERATE A HIGH FREQUENCY COMPONENT OF AN AUDIO SIGNAL TO A SECOND FREQUENCY OF SAMPLING FROM A LOW FREQUENCY COMPONENT OF THE AUDIO SIGNAL TO A FIRST SAMPLING FREQUENCY AR100406A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18136409P 2009-05-27 2009-05-27

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AR100406A2 true AR100406A2 (en) 2016-10-05

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ARP150101456A AR100406A2 (en) 2009-05-27 2015-05-12 SETUP AND METHOD CONFIGURED TO GENERATE A HIGH FREQUENCY COMPONENT OF AN AUDIO SIGNAL TO A SECOND FREQUENCY OF SAMPLING FROM A LOW FREQUENCY COMPONENT OF THE AUDIO SIGNAL TO A FIRST SAMPLING FREQUENCY
ARP150101455A AR100405A2 (en) 2009-05-27 2015-05-12 SETUP AND METHOD CONFIGURED TO GENERATE A HIGH FREQUENCY AUDIO COMPONENT FROM A LOW FREQUENCY COMPONENT OF THE AUDIO SIGNAL

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ARP150101455A AR100405A2 (en) 2009-05-27 2015-05-12 SETUP AND METHOD CONFIGURED TO GENERATE A HIGH FREQUENCY AUDIO COMPONENT FROM A LOW FREQUENCY COMPONENT OF THE AUDIO SIGNAL

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AR100405A2 (en) 2016-10-05

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