AR072552A1 - Un aparato y un metodo para calcular una cantidad de envolventes espectrales - Google Patents

Un aparato y un metodo para calcular una cantidad de envolventes espectrales

Info

Publication number
AR072552A1
AR072552A1 ARP090102548A ARP090102548A AR072552A1 AR 072552 A1 AR072552 A1 AR 072552A1 AR P090102548 A ARP090102548 A AR P090102548A AR P090102548 A ARP090102548 A AR P090102548A AR 072552 A1 AR072552 A1 AR 072552A1
Authority
AR
Argentina
Prior art keywords
pair
time
sbr
portions
envelope edge
Prior art date
Application number
ARP090102548A
Other languages
English (en)
Original Assignee
Fraunhofer Ges Forschung
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 filed Critical Fraunhofer Ges Forschung
Publication of AR072552A1 publication Critical patent/AR072552A1/es

Links

Classifications

    • 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
    • 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
    • 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
    • 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 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
    • G10L19/04—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

Abstract

Un aparato (100) para calcular una cantidad (102) de envolventes espectrales (104) derivadas por el codificador de replicacion de banda espectral (SBR), donde el codificador SBR está adaptado para codificar una senal de audio (105) utilizando una pluralidad de valores de muestra dentro de una cantidad predeterminada de porciones de tiempo subsecuentes (110) en un cuadro SBR que se extiende desde un tiempo inicial (t0) a un tiempo final (tn), la cantidad predeterminada de porciones de tiempo subsecuentes (110) se disponen en una secuencia de tiempo dada por la senal de audio (105). El aparato (100) comprende un calculador de valor de decision (120) para determinar un valor de decision (125), el valor de decision (125) mide una desviacion en la distribucion de energía espectral de un par de porciones de tiempo vecinas. El aparato además comprende un detector (130) para detectar una violacion (135) de un valor umbral por medio del valor de decision (125) un procesador (140) para determinar un primer borde de envolvente (145) entre el par de porciones de tiempo vecinas cuando se detecta violacion (135) del valor umbral. El aparato además comprende un procesador (150) para determinar un segundo borde de envolvente (155) entre un par de porciones de tiempo vecinas diferente o en el tiempo inicial (t0) o en el tiempo final (tn) para una envolvente con el primer borde de envolvente (145) basado en la violacion (135) del valor umbral para el otro par o basado en una posicion temporal del par o del par diferente en el cuadro SBR. El aparato (100) además comprende un procesador de cantidad (160) para establecer la cantidad (102) de envolventes espectrales (104) con el primer borde de envolvente (145) y el segundo borde de envolvente (155).
ARP090102548A 2008-07-11 2009-07-07 Un aparato y un metodo para calcular una cantidad de envolventes espectrales AR072552A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7984108P 2008-07-11 2008-07-11
PCT/EP2009/004523 WO2010003546A2 (en) 2008-07-11 2009-06-23 An apparatus and a method for calculating a number of spectral envelopes

Publications (1)

Publication Number Publication Date
AR072552A1 true AR072552A1 (es) 2010-09-08

Family

ID=40902067

Family Applications (3)

Application Number Title Priority Date Filing Date
ARP090102548A AR072552A1 (es) 2008-07-11 2009-07-07 Un aparato y un metodo para calcular una cantidad de envolventes espectrales
ARP090102546A AR072480A1 (es) 2008-07-11 2009-07-07 Un aparato y un metodo para generar datos de salida por ampliacion de ancho de banda
ARP140103215A AR097473A2 (es) 2008-07-11 2014-08-27 Método de codificación y codificador para generar datos de salida por ampliación de ancho de banda

Family Applications After (2)

Application Number Title Priority Date Filing Date
ARP090102546A AR072480A1 (es) 2008-07-11 2009-07-07 Un aparato y un metodo para generar datos de salida por ampliacion de ancho de banda
ARP140103215A AR097473A2 (es) 2008-07-11 2014-08-27 Método de codificación y codificador para generar datos de salida por ampliación de ancho de banda

Country Status (20)

Country Link
US (2) US8296159B2 (es)
EP (2) EP2301027B1 (es)
JP (2) JP5628163B2 (es)
KR (5) KR101395252B1 (es)
CN (2) CN102089817B (es)
AR (3) AR072552A1 (es)
AU (2) AU2009267530A1 (es)
BR (2) BRPI0910517B1 (es)
CA (2) CA2729971C (es)
CO (2) CO6341676A2 (es)
ES (2) ES2539304T3 (es)
HK (2) HK1156140A1 (es)
IL (2) IL210196A (es)
MX (2) MX2011000361A (es)
MY (2) MY153594A (es)
PL (2) PL2301028T3 (es)
RU (2) RU2487428C2 (es)
TW (2) TWI415115B (es)
WO (2) WO2010003546A2 (es)
ZA (2) ZA201009207B (es)

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Publication number Publication date
KR101395257B1 (ko) 2014-05-15
TWI415114B (zh) 2013-11-11
BRPI0910523A2 (pt) 2020-10-20
KR20110038029A (ko) 2011-04-13
US20110202358A1 (en) 2011-08-18
RU2011101617A (ru) 2012-07-27
KR101278546B1 (ko) 2013-06-24
KR20130095841A (ko) 2013-08-28
IL210196A0 (en) 2011-03-31
ES2398627T3 (es) 2013-03-20
KR20130033468A (ko) 2013-04-03
EP2301028B1 (en) 2012-12-05
IL210196A (en) 2015-10-29
MY153594A (en) 2015-02-27
HK1156141A1 (en) 2012-06-01
EP2301027A1 (en) 2011-03-30
CN102089817B (zh) 2013-01-09
PL2301028T3 (pl) 2013-05-31
AU2009267532A8 (en) 2011-03-17
CN102144259B (zh) 2015-01-07
JP5551694B2 (ja) 2014-07-16
HK1156140A1 (en) 2012-06-01
TW201007700A (en) 2010-02-16
CA2730200C (en) 2016-09-27
JP5628163B2 (ja) 2014-11-19
PL2301027T3 (pl) 2015-09-30
US20110202352A1 (en) 2011-08-18
IL210330A0 (en) 2011-03-31
RU2011103999A (ru) 2012-08-20
TWI415115B (zh) 2013-11-11
KR20130095840A (ko) 2013-08-28
TW201007701A (en) 2010-02-16
KR101395252B1 (ko) 2014-05-15
CO6341676A2 (es) 2011-11-21
AR072480A1 (es) 2010-09-01
ZA201009207B (en) 2011-09-28
MX2011000367A (es) 2011-03-02
WO2010003546A2 (en) 2010-01-14
JP2011527450A (ja) 2011-10-27
AU2009267530A1 (en) 2010-01-14
CA2729971C (en) 2014-11-04
ES2539304T3 (es) 2015-06-29
CA2729971A1 (en) 2010-01-14
WO2010003546A3 (en) 2010-03-04
CN102089817A (zh) 2011-06-08
KR20110040820A (ko) 2011-04-20
CN102144259A (zh) 2011-08-03
US8612214B2 (en) 2013-12-17
RU2494477C2 (ru) 2013-09-27
AR097473A2 (es) 2016-03-16
US8296159B2 (en) 2012-10-23
ZA201100086B (en) 2011-08-31
EP2301028A2 (en) 2011-03-30
KR101395250B1 (ko) 2014-05-15
AU2009267532B2 (en) 2013-04-04
JP2011527448A (ja) 2011-10-27
WO2010003544A1 (en) 2010-01-14
BRPI0910517A2 (pt) 2016-07-26
CA2730200A1 (en) 2010-01-14
KR101345695B1 (ko) 2013-12-30
AU2009267532A1 (en) 2010-01-14
BRPI0910517B1 (pt) 2022-08-23
EP2301027B1 (en) 2015-04-08
MX2011000361A (es) 2011-02-25
RU2487428C2 (ru) 2013-07-10
CO6341677A2 (es) 2011-11-21
MY155538A (en) 2015-10-30
BRPI0910523B1 (pt) 2021-11-09

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