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AR085223A1 - Codec de audio que soporta modos de codificacion en el dominio del tiempo y en el dominio de la frecuencia - Google Patents

Codec de audio que soporta modos de codificacion en el dominio del tiempo y en el dominio de la frecuencia

Info

Publication number
AR085223A1
AR085223A1 ARP120100478A ARP120100478A AR085223A1 AR 085223 A1 AR085223 A1 AR 085223A1 AR P120100478 A ARP120100478 A AR P120100478A AR P120100478 A ARP120100478 A AR P120100478A AR 085223 A1 AR085223 A1 AR 085223A1
Authority
AR
Argentina
Prior art keywords
coding modes
domain
mode
frequency
audio codec
Prior art date
Application number
ARP120100478A
Other languages
English (en)
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 AR085223A1 publication Critical patent/AR085223A1/es

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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
    • G—PHYSICS
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    • 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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
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    • 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
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    • 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
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    • G10L19/025—Detection of transients or attacks for time/frequency resolution switching
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    • 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
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    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
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    • 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
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    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/06—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being correlation coefficients
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    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

Un códec de audio que soporta tanto modos de codificación en el dominio del tiempo como en el dominio de la frecuencia, que tiene bajo retardo y mayor eficiencia de codificación en términos de relación de tasa/distorsión, se obtiene mediante la configuración del codificador de audio de manera que este opera en diferentes modos de operación, de manera que si el modo de operación activo es un primer modo de operación, un grupo dependiente del modo de modos de codificación de trama disponibles está separado en un primer subgrupo de modos de codificación en el dominio del tiempo, y se superpone con un segundo subgrupo de modos de codificación en el dominio de la frecuencia, mientras que si el modo de operación activo es un segundo modo de operación, el grupo dependiente del modo de modos de codificación de trama disponibles se superpone con ambos subgrupos, es decir, el subgrupo de modos de codificación en el dominio del tiempo al igual que el subgrupo de modos de codificación en el dominio de la frecuencia.
ARP120100478A 2011-02-14 2012-02-14 Codec de audio que soporta modos de codificacion en el dominio del tiempo y en el dominio de la frecuencia AR085223A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161442632P 2011-02-14 2011-02-14
PCT/EP2012/052461 WO2012110480A1 (en) 2011-02-14 2012-02-14 Audio codec supporting time-domain and frequency-domain coding modes

Publications (1)

Publication Number Publication Date
AR085223A1 true AR085223A1 (es) 2013-09-18

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ARP120100478A AR085223A1 (es) 2011-02-14 2012-02-14 Codec de audio que soporta modos de codificacion en el dominio del tiempo y en el dominio de la frecuencia

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US (1) US9037457B2 (es)
EP (1) EP2676269B1 (es)
JP (1) JP5851525B2 (es)
KR (2) KR101648133B1 (es)
CN (1) CN103548078B (es)
AR (1) AR085223A1 (es)
AU (2) AU2012217160B2 (es)
BR (1) BR112013020589B1 (es)
CA (1) CA2827296C (es)
ES (1) ES2562189T3 (es)
MX (1) MX2013009302A (es)
MY (2) MY159444A (es)
PL (1) PL2676269T3 (es)
RU (1) RU2547241C1 (es)
SG (1) SG192715A1 (es)
TW (2) TWI488176B (es)
WO (1) WO2012110480A1 (es)
ZA (1) ZA201306872B (es)

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