MX350686B - Aparato y método para la codificación y decodificación de audio que emplea sustitución sinusoidal. - Google Patents

Aparato y método para la codificación y decodificación de audio que emplea sustitución sinusoidal.

Info

Publication number
MX350686B
MX350686B MX2013012409A MX2013012409A MX350686B MX 350686 B MX350686 B MX 350686B MX 2013012409 A MX2013012409 A MX 2013012409A MX 2013012409 A MX2013012409 A MX 2013012409A MX 350686 B MX350686 B MX 350686B
Authority
MX
Mexico
Prior art keywords
spectrum
time
signal
domain
pseudo coefficients
Prior art date
Application number
MX2013012409A
Other languages
English (en)
Other versions
MX2013012409A (es
Inventor
Sascha Disch
Ralf Geiger
Martin Dietz
Benjamin Schubert
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 MX2013012409A publication Critical patent/MX2013012409A/es
Publication of MX350686B publication Critical patent/MX350686B/es

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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 TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
    • G10L19/028—Noise substitution, i.e. substituting non-tonal spectral components by noisy source
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
    • G10L19/032—Quantisation or dequantisation of spectral components

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Se da a conocer un aparato para generar una señal de salida de audio basándose en el espectro de una señal de audio codificada. El aparato comprende una unidad de procesamiento (110), un determinador de pseudo coeficientes (120), una unidad modificadora del espectro (130), una unidad de conversión de espectro-tiempo (140), un oscilador controlable (150) y un mezclador (160). El determinador de pseudo coeficientes (120) está configurado para determinar uno o más pseudo coeficientes del espectro de la señal de audio decodificada, donde cada uno de los pseudo coeficientes tiene una ubicación espectral y un valor espectral. La unidad modificadora del espectro (130) está configurada para fijar dichos uno o más pseudo coeficientes en un valor predefinido para obtener un espectro de señal de audio modificado. La unidad de conversión de espectro-tiempo (140) está configurada para convertir el espectro de la señal de audio modificado al dominio del tiempo para obtener una señal de conversión al dominio del tiempo. El oscilador controlable (150) está configurado para generar una señal de oscilador en el dominio del tiempo, el oscilador controlable (150) que es controlado por la ubicación espectral y el valor espectral de por lo menos uno de dichos uno o más pseudo coeficientes. El mezclador (160) está configurado para mezclar la señal de conversión al dominio del tiempo y la señal del oscilador en el dominio del tiempo para obtener la señal de salida de audio.
MX2013012409A 2012-01-20 2012-12-21 Aparato y método para la codificación y decodificación de audio que emplea sustitución sinusoidal. MX350686B (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261588998P 2012-01-20 2012-01-20
PCT/EP2012/076746 WO2013107602A1 (en) 2012-01-20 2012-12-21 Apparatus and method for audio encoding and decoding employing sinusoidal substitution

Publications (2)

Publication Number Publication Date
MX2013012409A MX2013012409A (es) 2013-12-06
MX350686B true MX350686B (es) 2017-09-13

Family

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Family Applications (1)

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MX2013012409A MX350686B (es) 2012-01-20 2012-12-21 Aparato y método para la codificación y decodificación de audio que emplea sustitución sinusoidal.

Country Status (19)

Country Link
US (1) US9343074B2 (es)
EP (1) EP2673776B1 (es)
JP (1) JP5600822B2 (es)
KR (1) KR101672025B1 (es)
CN (1) CN103493130B (es)
AR (1) AR089772A1 (es)
AU (1) AU2012366843B2 (es)
BR (1) BR112013026452B1 (es)
CA (2) CA2848275C (es)
ES (1) ES2545053T3 (es)
HK (1) HK1192640A1 (es)
MX (1) MX350686B (es)
MY (1) MY157163A (es)
PL (1) PL2673776T3 (es)
RU (1) RU2562383C2 (es)
SG (1) SG194706A1 (es)
TW (1) TWI503815B (es)
WO (1) WO2013107602A1 (es)
ZA (1) ZA201308073B (es)

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Also Published As

Publication number Publication date
CN103493130A (zh) 2014-01-01
TWI503815B (zh) 2015-10-11
EP2673776A1 (en) 2013-12-18
HK1192640A1 (en) 2014-08-22
BR112013026452A2 (pt) 2017-06-27
SG194706A1 (en) 2013-12-30
PL2673776T3 (pl) 2015-12-31
CA2831176C (en) 2014-12-09
CA2831176A1 (en) 2013-07-25
CA2848275A1 (en) 2014-04-03
AU2012366843B2 (en) 2015-08-06
RU2013148123A (ru) 2015-05-10
AR089772A1 (es) 2014-09-17
KR20130137235A (ko) 2013-12-16
JP5600822B2 (ja) 2014-10-08
ZA201308073B (en) 2015-01-28
ES2545053T3 (es) 2015-09-08
CN103493130B (zh) 2016-05-18
CA2848275C (en) 2016-03-08
RU2562383C2 (ru) 2015-09-10
TW201346891A (zh) 2013-11-16
KR101672025B1 (ko) 2016-11-02
MX2013012409A (es) 2013-12-06
US20140074486A1 (en) 2014-03-13
WO2013107602A1 (en) 2013-07-25
US9343074B2 (en) 2016-05-17
AU2012366843A1 (en) 2013-10-10
JP2014517932A (ja) 2014-07-24
MY157163A (en) 2016-05-13
EP2673776B1 (en) 2015-06-17
BR112013026452B1 (pt) 2021-02-17

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