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MX2010005679A - Metodo y aparato para extension de ancho de banda de señal de audio. - Google Patents

Metodo y aparato para extension de ancho de banda de señal de audio.

Info

Publication number
MX2010005679A
MX2010005679A MX2010005679A MX2010005679A MX2010005679A MX 2010005679 A MX2010005679 A MX 2010005679A MX 2010005679 A MX2010005679 A MX 2010005679A MX 2010005679 A MX2010005679 A MX 2010005679A MX 2010005679 A MX2010005679 A MX 2010005679A
Authority
MX
Mexico
Prior art keywords
audio signal
digital audio
signal
bandwidth
corresponds
Prior art date
Application number
MX2010005679A
Other languages
English (en)
Inventor
Mark A Jasiuk
Tenkasi V Ramabadran
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of MX2010005679A publication Critical patent/MX2010005679A/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
    • G10L19/04—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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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
    • G10L21/00—Speech or voice signal processing techniques 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 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
    • G10L21/00—Speech or voice signal processing techniques 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

Se proporciona (101) una señal de audio digital que tiene un ancho de banda de señal correspondiente, y después se proporciona (102) un valor de energía que corresponde al menos a un estimado de energía de ancho de banda fuera-de-señal como corresponde a esa señal de audio digital; después se utiliza (103) el valor de energía para determinar simultáneamente tanto una forma de envoltura espectral como una energía conveniente correspondiente para la forma de envoltura espectral para contenido de ancho de banda fuera-de-señal como corresponde a la señal de audio digital; por medio de un enfoque, si así se desea, entonces se combina (104) (por ejemplo, sobre una base cuadro por cuadro) la señal de audio digital con el contenido de ancho de banda fuera-de-señal para proporcionar una versión extendida de ancho de banda de la señal de audio digital para que sea entregada de manera audible y así mejorar la calidad de audio correspondiente de la señal de audio digital tal como se proporciona.
MX2010005679A 2007-11-29 2008-10-09 Metodo y aparato para extension de ancho de banda de señal de audio. MX2010005679A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/946,978 US8688441B2 (en) 2007-11-29 2007-11-29 Method and apparatus to facilitate provision and use of an energy value to determine a spectral envelope shape for out-of-signal bandwidth content
PCT/US2008/079366 WO2009070387A1 (en) 2007-11-29 2008-10-09 Method and apparatus for bandwidth extension of audio signal

Publications (1)

Publication Number Publication Date
MX2010005679A true MX2010005679A (es) 2010-06-02

Family

ID=40149754

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2010005679A MX2010005679A (es) 2007-11-29 2008-10-09 Metodo y aparato para extension de ancho de banda de señal de audio.

Country Status (8)

Country Link
US (1) US8688441B2 (es)
EP (1) EP2232223B1 (es)
KR (2) KR20100086018A (es)
CN (2) CN102646419B (es)
BR (1) BRPI0820463B1 (es)
MX (1) MX2010005679A (es)
RU (1) RU2447415C2 (es)
WO (1) WO2009070387A1 (es)

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Also Published As

Publication number Publication date
RU2447415C2 (ru) 2012-04-10
CN101878416B (zh) 2012-06-06
BRPI0820463B1 (pt) 2019-03-06
CN101878416A (zh) 2010-11-03
KR20120055746A (ko) 2012-05-31
US8688441B2 (en) 2014-04-01
US20090144062A1 (en) 2009-06-04
EP2232223B1 (en) 2016-06-15
RU2010126497A (ru) 2012-01-10
WO2009070387A1 (en) 2009-06-04
CN102646419A (zh) 2012-08-22
BRPI0820463A2 (pt) 2015-06-16
CN102646419B (zh) 2015-04-22
BRPI0820463A8 (pt) 2015-11-03
KR101482830B1 (ko) 2015-01-15
KR20100086018A (ko) 2010-07-29
EP2232223A1 (en) 2010-09-29

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