MX356721B - Extension de ancho de banda adaptable y aparato correspondiente. - Google Patents

Extension de ancho de banda adaptable y aparato correspondiente.

Info

Publication number
MX356721B
MX356721B MX2016003074A MX2016003074A MX356721B MX 356721 B MX356721 B MX 356721B MX 2016003074 A MX2016003074 A MX 2016003074A MX 2016003074 A MX2016003074 A MX 2016003074A MX 356721 B MX356721 B MX 356721B
Authority
MX
Mexico
Prior art keywords
band
audio signal
sub
excitation spectrum
low
Prior art date
Application number
MX2016003074A
Other languages
English (en)
Other versions
MX2016003074A (es
Inventor
Gao Yang
Original Assignee
Huawei Tech Co Ltd
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 Huawei Tech Co Ltd filed Critical Huawei Tech Co Ltd
Publication of MX2016003074A publication Critical patent/MX2016003074A/es
Publication of MX356721B publication Critical patent/MX356721B/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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
    • 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
    • G10L19/0204—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 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] 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
    • G10L19/04—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
    • G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
    • 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
    • G10L19/04—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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (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)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Un método para decodificar un flujo de bits de audio codificado y generar una extensión de ancho de banda de frecuencia incluye decodificar un flujo de bits de audio para producir una señal de audio de banda baja decodificada y generar un espectro de excitación de banda baja que corresponde a una banda de baja frecuencia. Un área de sub-banda se selecciona desde dentro de la banda de baja frecuencia utilizando un parámetro que indica información de energía de una envolvente espectral de la señal de audio de banda baja decodificada. Un espectro de excitación de banda alta se genera para una banda de alta frecuencia al copiar un espectro de excitación de sub-banda desde el área de sub-banda seleccionada a un área de sub-banda alta correspondiente a la banda de alta frecuencia. Usando el espectro generado de excitación de banda alta, una señal de audio de banda alta extendida se genera mediante la aplicación de una envolvente espectral de banda alta. Se añade la señal de audio de banda alta extendida a la señal de audio de banda baja decodificada para generar una señal de salida de audio que tiene un ancho de banda de frecuencia extendida.
MX2016003074A 2013-09-10 2014-09-09 Extension de ancho de banda adaptable y aparato correspondiente. MX356721B (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201361875690P 2013-09-10 2013-09-10
US14/478,839 US9666202B2 (en) 2013-09-10 2014-09-05 Adaptive bandwidth extension and apparatus for the same
PCT/CN2014/086135 WO2015035896A1 (en) 2013-09-10 2014-09-09 Adaptive bandwidth extension and apparatus for the same

Publications (2)

Publication Number Publication Date
MX2016003074A MX2016003074A (es) 2016-05-31
MX356721B true MX356721B (es) 2018-06-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
MX2016003074A MX356721B (es) 2013-09-10 2014-09-09 Extension de ancho de banda adaptable y aparato correspondiente.

Country Status (16)

Country Link
US (2) US9666202B2 (es)
EP (3) EP4258261A3 (es)
JP (1) JP6336086B2 (es)
KR (2) KR101785885B1 (es)
CN (2) CN107393552B (es)
AU (1) AU2014320881B2 (es)
BR (1) BR112016005111B1 (es)
CA (1) CA2923218C (es)
ES (1) ES2644967T3 (es)
HK (1) HK1220541A1 (es)
MX (1) MX356721B (es)
MY (1) MY192508A (es)
PL (1) PL3301674T3 (es)
RU (1) RU2641224C2 (es)
SG (1) SG11201601637PA (es)
WO (1) WO2015035896A1 (es)

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EP3039676A4 (en) 2016-09-07
RU2016113288A (ru) 2017-10-16
AU2014320881B2 (en) 2017-05-25
SG11201601637PA (en) 2016-04-28
KR101785885B1 (ko) 2017-10-16
EP4258261A3 (en) 2023-12-20
AU2014320881A1 (en) 2016-04-07
KR101871644B1 (ko) 2018-06-26
CA2923218C (en) 2017-12-05
US9666202B2 (en) 2017-05-30
JP6336086B2 (ja) 2018-06-06
MY192508A (en) 2022-08-24
BR112016005111A2 (es) 2017-08-01
CA2923218A1 (en) 2015-03-19
EP3301674B1 (en) 2023-08-30
RU2641224C2 (ru) 2018-01-16
EP3301674A1 (en) 2018-04-04
US10249313B2 (en) 2019-04-02
US20170221498A1 (en) 2017-08-03
CN107393552B (zh) 2019-01-18
JP2016535873A (ja) 2016-11-17
CN105637583B (zh) 2017-08-29
HK1220541A1 (zh) 2017-05-05
CN107393552A (zh) 2017-11-24
EP4258261A2 (en) 2023-10-11
ES2644967T3 (es) 2017-12-01
WO2015035896A1 (en) 2015-03-19
MX2016003074A (es) 2016-05-31
KR20170117207A (ko) 2017-10-20
EP3039676A1 (en) 2016-07-06
EP3039676B1 (en) 2017-09-06
US20150073784A1 (en) 2015-03-12
CN105637583A (zh) 2016-06-01
PL3301674T3 (pl) 2024-03-04
KR20160050071A (ko) 2016-05-10
BR112016005111B1 (pt) 2022-07-12

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