ES2569912T3 - Esquema de codificación/decodificación de audio a baja tasa de bits y conmutadores en cascada - Google Patents

Esquema de codificación/decodificación de audio a baja tasa de bits y conmutadores en cascada Download PDF

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Publication number
ES2569912T3
ES2569912T3 ES09793874.0T ES09793874T ES2569912T3 ES 2569912 T3 ES2569912 T3 ES 2569912T3 ES 09793874 T ES09793874 T ES 09793874T ES 2569912 T3 ES2569912 T3 ES 2569912T3
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signal
audio
domain
coding
branch
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ES09793874.0T
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Inventor
Bernhard Grill
Roch Lefebvre
Bruno Bessette
Jimmy Lapierre
Philippe Gournay
Redwan Salami
Stefan Bayer
Guillaume Fuchs
Stefan Geyersberger
Ralf Geiger
Johannes Hilpert
Ulrich Kraemer
Jeremie Lecomte
Markus Multrus
Max Neuendorf
Harald Popp
Nikolaus Rettelbach
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VoiceAge Corp
Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung eV
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VoiceAge Corp
Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung eV
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    • 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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • G10L19/04—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
    • G10L19/16—Vocoder architecture
    • G10L19/173—Transcoding, i.e. converting between two coded representations avoiding cascaded coding-decoding
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • 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
    • G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
    • 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
    • G10L19/0212—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 orthogonal transformation
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0007—Codebook element generation
    • G10L2019/0008—Algebraic codebooks

Landscapes

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

Abstract

Un codificador de audio para codificar una señal de entrada de audio (195), estando la señal de entrada de audio en un primer dominio, que comprende: una primera ramificación de codificación (400) para codificar una señal de audio utilizando un primer algoritmo de codificación para obtener una primera señal codificada; una segunda ramificación de codificación (500) para codificar una señal de audio utilizando un segundo algoritmo de codificación para obtener una segunda señal codificada, donde el primer algoritmo de codificación es diferente del segundo algoritmo de codificación; y un primer conmutador (200) para conmutar entre la primera ramificación de codificación y la segunda ramificación de codificación de modo que, para una porción de la señal de entrada de audio, ya sea la primera señal codificada o la segunda señal codificada está comprendida en una señal de salida del codificador, en el que la segunda ramificación de codificación comprende: un convertidor (510) para convertir la señal de audio en un segundo dominio diferente del primer dominio, una primera ramificación de procesamiento (522) para procesar una señal de audio en el segundo dominio para obtener una primer señal procesada; una segunda ramificación de procesamiento (523, 524) para convertir una señal de audio en un tercer dominio diferente del primer dominio y del segundo dominio y para procesar la señal en el tercer dominio para obtener una segunda señal procesada; y un segundo conmutador (521) para conmutar entre la primera ramificación de procesamiento (522) y la segunda ramificación de procesamiento (523, 524) de modo que, para una porción de la entrada de la señal de audio en la segunda ramificación de codificación, ya sea la primera señal procesada o la segunda señal procesada está comprendida en la segunda señal codificada.

Description

Esquema de codificación/decodificación de audio a baja tasa de bits y conmutadores en cascada
ES09793874.0T 2008-07-11 2009-06-26 Esquema de codificación/decodificación de audio a baja tasa de bits y conmutadores en cascada Active ES2569912T3 (es)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US7985408P 2008-07-11 2008-07-11
US79854 2008-07-11
EP08017663 2008-10-08
EP08017663 2008-10-08
EP09002271 2009-02-18
EP09002271A EP2144230A1 (en) 2008-07-11 2009-02-18 Low bitrate audio encoding/decoding scheme having cascaded switches
PCT/EP2009/004652 WO2010003564A1 (en) 2008-07-11 2009-06-26 Low bitrate audio encoding/decoding scheme having cascaded switches

Publications (1)

Publication Number Publication Date
ES2569912T3 true ES2569912T3 (es) 2016-05-13

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Country Status (17)

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US (13) US8930198B2 (es)
EP (2) EP2144230A1 (es)
JP (1) JP5244972B2 (es)
KR (1) KR101224559B1 (es)
CN (1) CN102113051B (es)
AR (1) AR072421A1 (es)
AU (1) AU2009267467B2 (es)
CA (1) CA2729878C (es)
ES (1) ES2569912T3 (es)
IL (1) IL210331A (es)
MX (1) MX2011000362A (es)
MY (1) MY153455A (es)
PT (1) PT2301023T (es)
RU (1) RU2485606C2 (es)
TW (1) TWI539443B (es)
WO (1) WO2010003564A1 (es)
ZA (1) ZA201009163B (es)

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