CO6351837A2 - Codificador y decodificador de audio para codificar y decodificar muestras audio - Google Patents

Codificador y decodificador de audio para codificar y decodificar muestras audio

Info

Publication number
CO6351837A2
CO6351837A2 CO11016281A CO11016281A CO6351837A2 CO 6351837 A2 CO6351837 A2 CO 6351837A2 CO 11016281 A CO11016281 A CO 11016281A CO 11016281 A CO11016281 A CO 11016281A CO 6351837 A2 CO6351837 A2 CO 6351837A2
Authority
CO
Colombia
Prior art keywords
encoder
audio
samples
audio samples
coding
Prior art date
Application number
CO11016281A
Other languages
English (en)
Inventor
Jeremie Lecomte
Philippe Gournay
Bernhard Grill
Bruno Bessette
Markus Multrus
Stefan Bayer
Original Assignee
Fraunhofer Ges Ev
Voiceage Corp
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 Ev, Voiceage Corp filed Critical Fraunhofer Ges Ev
Publication of CO6351837A2 publication Critical patent/CO6351837A2/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
    • 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
    • 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
    • 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
    • G10L19/022—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
    • 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

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)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Un codificador de audio (100) para codificar muestras de audio, que comprenden un primer codificador introductor de aliasing en dominio de tiempo (110) para decodificar muestras de audio en un primer dominio de codificación, el primer codificador introductor de aliasing en dominio de tiempo (110) que tiene una primera regla de tramado, una ventana de inicio y una ventana de detención. El codificador de audio (100) además comprende un segundo codificador (120) para codificar muestras en un segundo dominio de codificación, el segundo codificador (120) que tiene un número de muestras de audio de tamaño de trama predeterminado, y un número de muestras de audio de periodo de puesta a punto de codificación, el segundo codificador (120) que tiene una segunda regla de tramado diferente, una trama del segundo codificador (120) que es una representación codificada de un número de muestras de audio posteriores en el tiempo, el número que es igual al número de muestras de audio de tamaño de trama predeterminado. El codificador de audio (100) además comprende un controlador (130) que cambia del primer codificador (110) al segundo codificador (120) en respuesta a una característica de las muestras de audio, y para modificar la segunda regla de tramado en respuesta al cambio del primer codificador (110) al segundo codificador (120) o para modificar la ventana de inicio o la ventana de detención del primer codificador (110), en donde la segunda regla de tramado permanece sin modificaciones
CO11016281A 2008-07-11 2011-02-11 Codificador y decodificador de audio para codificar y decodificar muestras audio CO6351837A2 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7985608P 2008-07-11 2008-07-11
US10382508P 2008-10-08 2008-10-08

Publications (1)

Publication Number Publication Date
CO6351837A2 true CO6351837A2 (es) 2011-12-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CO11016281A CO6351837A2 (es) 2008-07-11 2011-02-11 Codificador y decodificador de audio para codificar y decodificar muestras audio

Country Status (21)

Country Link
US (1) US8892449B2 (es)
EP (2) EP2311032B1 (es)
JP (2) JP5551695B2 (es)
KR (1) KR101325335B1 (es)
CN (1) CN102089811B (es)
AR (1) AR072738A1 (es)
AU (1) AU2009267466B2 (es)
BR (1) BRPI0910512B1 (es)
CA (3) CA2730204C (es)
CO (1) CO6351837A2 (es)
EG (1) EG26653A (es)
ES (2) ES2657393T3 (es)
HK (3) HK1155552A1 (es)
MX (1) MX2011000366A (es)
MY (3) MY181231A (es)
PL (2) PL3002750T3 (es)
PT (1) PT3002750T (es)
RU (1) RU2515704C2 (es)
TW (1) TWI459379B (es)
WO (1) WO2010003563A1 (es)
ZA (1) ZA201100089B (es)

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WO2010003563A8 (en) 2011-04-21
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AR072738A1 (es) 2010-09-15
CA2871372C (en) 2016-08-23
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