AR082764A1 - Metodo de extension de ancho de banda, aparato de extension de ancho de banda, programa, circuito integrado, y aparato de decodificacion de audio - Google Patents

Metodo de extension de ancho de banda, aparato de extension de ancho de banda, programa, circuito integrado, y aparato de decodificacion de audio

Info

Publication number
AR082764A1
AR082764A1 ARP110101983A ARP110101983A AR082764A1 AR 082764 A1 AR082764 A1 AR 082764A1 AR P110101983 A ARP110101983 A AR P110101983A AR P110101983 A ARP110101983 A AR P110101983A AR 082764 A1 AR082764 A1 AR 082764A1
Authority
AR
Argentina
Prior art keywords
bandwidth extension
bandwidth
low frequency
program
integrated circuit
Prior art date
Application number
ARP110101983A
Other languages
English (en)
Inventor
Huan Zhou
Kok Seng Chong
Haishan Zhong
Takeshi Norimatsu
Tomokazu Ishikawa
Original Assignee
Panasonic Corp
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 Panasonic Corp filed Critical Panasonic Corp
Publication of AR082764A1 publication Critical patent/AR082764A1/es

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/04—Time compression or expansion

Abstract

Para suministrar un método de extensión de ancho de banda que permita la reducción de la cantidad de cómputo en la extensión del ancho de banda y la supresión del deterioro de la calidad del ancho de banda a ser extendido. En el método de extensión de ancho de banda: se trasforma una señal de ancho de banda de baja frecuencia en un dominio QMF para generar un primer espectro QMF de baja frecuencia (S11); las señales separadas cambiadas se generan al aplicar diferentes factores de cambio sobre la señal de ancho de banda de baja frecuencia (S12); un espectro QMF de alta frecuencia se generan al extender en el tiempo las señales separadas cambiadas en el dominio QMF (S13); el espectro QMF de alta frecuencia se modifica (S14); y el espectro QMF de alta frecuencia modificados se combina con un primer espectro QMF de baja frecuencia (S15).
ARP110101983A 2010-06-09 2011-06-08 Metodo de extension de ancho de banda, aparato de extension de ancho de banda, programa, circuito integrado, y aparato de decodificacion de audio AR082764A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010132205 2010-06-09

Publications (1)

Publication Number Publication Date
AR082764A1 true AR082764A1 (es) 2013-01-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
ARP110101983A AR082764A1 (es) 2010-06-09 2011-06-08 Metodo de extension de ancho de banda, aparato de extension de ancho de banda, programa, circuito integrado, y aparato de decodificacion de audio

Country Status (19)

Country Link
US (5) US9093080B2 (es)
EP (2) EP2581905B1 (es)
JP (2) JP5243620B2 (es)
KR (1) KR101773631B1 (es)
CN (1) CN102473417B (es)
AR (1) AR082764A1 (es)
AU (1) AU2011263191B2 (es)
BR (1) BR112012002839B1 (es)
CA (1) CA2770287C (es)
ES (1) ES2565959T3 (es)
HU (1) HUE028738T2 (es)
MX (1) MX2012001696A (es)
MY (1) MY176904A (es)
PL (1) PL2581905T3 (es)
RU (1) RU2582061C2 (es)
SG (1) SG178320A1 (es)
TW (1) TWI545557B (es)
WO (1) WO2011155170A1 (es)
ZA (1) ZA201200919B (es)

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Also Published As

Publication number Publication date
BR112012002839A2 (pt) 2017-02-14
EP3001419B1 (en) 2020-01-22
CA2770287C (en) 2017-12-12
EP3001419A1 (en) 2016-03-30
KR20130042460A (ko) 2013-04-26
US11341977B2 (en) 2022-05-24
CN102473417A (zh) 2012-05-23
US10566001B2 (en) 2020-02-18
TWI545557B (zh) 2016-08-11
US20120136670A1 (en) 2012-05-31
ES2565959T3 (es) 2016-04-07
EP2581905A1 (en) 2013-04-17
CA2770287A1 (en) 2011-12-15
RU2582061C2 (ru) 2016-04-20
RU2012104234A (ru) 2014-07-20
AU2011263191A1 (en) 2012-03-01
AU2011263191B2 (en) 2016-06-16
SG178320A1 (en) 2012-03-29
KR101773631B1 (ko) 2017-08-31
HUE028738T2 (en) 2017-01-30
JP2013084018A (ja) 2013-05-09
US9093080B2 (en) 2015-07-28
EP2581905A4 (en) 2014-11-05
US20170358307A1 (en) 2017-12-14
US20150248894A1 (en) 2015-09-03
MX2012001696A (es) 2012-02-22
JP5750464B2 (ja) 2015-07-22
WO2011155170A1 (ja) 2011-12-15
JPWO2011155170A1 (ja) 2013-08-01
BR112012002839A8 (pt) 2017-10-10
US20220246159A1 (en) 2022-08-04
US11749289B2 (en) 2023-09-05
CN102473417B (zh) 2015-04-08
TW201207840A (en) 2012-02-16
ZA201200919B (en) 2013-07-31
BR112012002839B1 (pt) 2020-10-13
MY176904A (en) 2020-08-26
US9799342B2 (en) 2017-10-24
US20200135217A1 (en) 2020-04-30
JP5243620B2 (ja) 2013-07-24
PL2581905T3 (pl) 2016-06-30
EP2581905B1 (en) 2016-01-06

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