MX2011013610A - Codificador de extension de ancho de banda, descodificador de extension de ancho de banda y vocoder de fase. - Google Patents

Codificador de extension de ancho de banda, descodificador de extension de ancho de banda y vocoder de fase.

Info

Publication number
MX2011013610A
MX2011013610A MX2011013610A MX2011013610A MX2011013610A MX 2011013610 A MX2011013610 A MX 2011013610A MX 2011013610 A MX2011013610 A MX 2011013610A MX 2011013610 A MX2011013610 A MX 2011013610A MX 2011013610 A MX2011013610 A MX 2011013610A
Authority
MX
Mexico
Prior art keywords
bandwidth extension
signal
encoder
frequency signal
decoder
Prior art date
Application number
MX2011013610A
Other languages
English (en)
Inventor
Christian Ertel
Markus Multrus
Frederik Nagel
Jeremie Lecomte
Disch Sascha
Patrick Warmbold
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 MX2011013610A publication Critical patent/MX2011013610A/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
    • 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
    • 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 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
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • 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
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered 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
    • G10L21/04—Time compression or expansion
    • 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
    • G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding

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)
  • Stereophonic System (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

Se describe un codificador de extensión de ancho de banda para codificar una señal de audio que comprende un analizador de señal, un codificador central y un calculador de parámetros. La señal de audio comprende una señal de baja frecuencia que comprende una banda de frecuencia central y una señal de alta frecuencia que comprende una banda de frecuencia superior. El analizador de señal está configurado para analizar la señal de audio, la señal de audio tiene un bloque de muestras de audio, el bloque tiene una duración de tiempo específica. El analizador de señal está configurado además para determinar a partir de una pluralidad de ventanas de análisis una ventana de análisis a ser usada para efectuar una extensión de ancho de banda en un descodificador de extensión de ancho de banda. El codificador central está configurado para codificar la señal de baja frecuencia para obtener una señal de frecuencia o codificada. El calculador de parámetros está configurado para calcular parámetros de extensión de ancho de banda a partir de la señal de alta frecuencia.
MX2011013610A 2009-06-29 2010-06-24 Codificador de extension de ancho de banda, descodificador de extension de ancho de banda y vocoder de fase. MX2011013610A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US22144209P 2009-06-29 2009-06-29
EP10153530A EP2273493B1 (en) 2009-06-29 2010-02-12 Bandwidth extension encoding and decoding
PCT/EP2010/059025 WO2011000780A1 (en) 2009-06-29 2010-06-24 Bandwidth extension encoder, bandwidth extension decoder and phase vocoder

Publications (1)

Publication Number Publication Date
MX2011013610A true MX2011013610A (es) 2012-03-26

Family

ID=42537947

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2011013610A MX2011013610A (es) 2009-06-29 2010-06-24 Codificador de extension de ancho de banda, descodificador de extension de ancho de banda y vocoder de fase.

Country Status (14)

Country Link
US (1) US8606586B2 (es)
EP (2) EP2273493B1 (es)
JP (1) JP5329714B2 (es)
KR (1) KR101425157B1 (es)
CN (1) CN102473414B (es)
AU (1) AU2010268160B2 (es)
BR (1) BRPI1010165B1 (es)
CA (2) CA2766573C (es)
ES (2) ES2400661T3 (es)
HK (2) HK1153035A1 (es)
MX (1) MX2011013610A (es)
PL (2) PL2273493T3 (es)
RU (1) RU2563164C2 (es)
WO (1) WO2011000780A1 (es)

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Also Published As

Publication number Publication date
EP2273493B1 (en) 2012-12-19
KR101425157B1 (ko) 2014-08-01
RU2012102411A (ru) 2013-08-20
CA2856587C (en) 2016-09-13
CA2766573C (en) 2015-06-23
CN102473414B (zh) 2013-11-06
US20120158409A1 (en) 2012-06-21
KR20120031957A (ko) 2012-04-04
WO2011000780A1 (en) 2011-01-06
US8606586B2 (en) 2013-12-10
CA2766573A1 (en) 2011-01-06
EP2449554B1 (en) 2015-03-25
BRPI1010165B1 (pt) 2021-01-05
CN102473414A (zh) 2012-05-23
JP2012531632A (ja) 2012-12-10
PL2273493T3 (pl) 2013-07-31
HK1153035A1 (en) 2012-03-16
ES2534944T3 (es) 2015-04-30
AU2010268160A1 (en) 2012-02-02
BRPI1010165A2 (pt) 2016-03-29
ES2400661T3 (es) 2013-04-11
PL2449554T3 (pl) 2015-08-31
JP5329714B2 (ja) 2013-10-30
AU2010268160B2 (en) 2014-03-06
HK1170331A1 (en) 2013-02-22
RU2563164C2 (ru) 2015-09-20
CA2856587A1 (en) 2011-01-06
EP2449554A1 (en) 2012-05-09
EP2273493A1 (en) 2011-01-12

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