MX2012001696A - Metodo de extension de ancho de banda, aparato de extension de ancho de banda, programa, circuito integrado, y aparato de descodificacion de audio. - Google Patents

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

Info

Publication number
MX2012001696A
MX2012001696A MX2012001696A MX2012001696A MX2012001696A MX 2012001696 A MX2012001696 A MX 2012001696A MX 2012001696 A MX2012001696 A MX 2012001696A MX 2012001696 A MX2012001696 A MX 2012001696A MX 2012001696 A MX2012001696 A MX 2012001696A
Authority
MX
Mexico
Prior art keywords
band enhancement
low frequency
qmf
enhancement method
generating
Prior art date
Application number
MX2012001696A
Other languages
English (en)
Inventor
Takeshi Norimatsu
Tomokazu Ishikawa
Huan Zhou
Kok Seng Chong
Haishan Zhong
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 MX2012001696A publication Critical patent/MX2012001696A/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
    • 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
    • G10L21/02—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
    • 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

Se proporciona un método de extensión de ancho de banda que permite 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 que va 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); se modifica el espectro QMF de alta frecuencia (S14); y el espectro QMF de alta frecuencia modificados se combina con un primer espectro QMF de baja frecuencia (S15).
MX2012001696A 2010-06-09 2011-06-06 Metodo de extension de ancho de banda, aparato de extension de ancho de banda, programa, circuito integrado, y aparato de descodificacion de audio. MX2012001696A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010132205 2010-06-09
PCT/JP2011/003168 WO2011155170A1 (ja) 2010-06-09 2011-06-06 帯域拡張方法、帯域拡張装置、プログラム、集積回路およびオーディオ復号装置

Publications (1)

Publication Number Publication Date
MX2012001696A true MX2012001696A (es) 2012-02-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
MX2012001696A MX2012001696A (es) 2010-06-09 2011-06-06 Metodo de extension de ancho de banda, aparato de extension de ancho de banda, programa, circuito integrado, y aparato de descodificacion 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
AR082764A1 (es) 2013-01-09
EP2581905A4 (en) 2014-11-05
US20170358307A1 (en) 2017-12-14
US20150248894A1 (en) 2015-09-03
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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