MX362424B - Codificador y decodificador de audio usando un procesador de dominio de frecuencia con un relleno de intervalo de banda completa y un procesador de dominio de tiempo. - Google Patents

Codificador y decodificador de audio usando un procesador de dominio de frecuencia con un relleno de intervalo de banda completa y un procesador de dominio de tiempo.

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Publication number
MX362424B
MX362424B MX2017001235A MX2017001235A MX362424B MX 362424 B MX362424 B MX 362424B MX 2017001235 A MX2017001235 A MX 2017001235A MX 2017001235 A MX2017001235 A MX 2017001235A MX 362424 B MX362424 B MX 362424B
Authority
MX
Mexico
Prior art keywords
audio signal
encoded
spectral
encoding
domain processor
Prior art date
Application number
MX2017001235A
Other languages
English (en)
Other versions
MX2017001235A (es
Inventor
Grill Bernhard
schubert Benjamin
Schnell Markus
Neusinger Matthias
Ravelli Emmanuel
Fuchs Guillaume
Multrus Markus
Dietz Martin
Disch Sascha
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 MX2017001235A publication Critical patent/MX2017001235A/es
Publication of MX362424B publication Critical patent/MX362424B/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
    • 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
    • G10L19/02—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
    • G10L19/028—Noise substitution, i.e. substituting non-tonal spectral components by noisy source
    • 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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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
    • 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
    • G10L19/18—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
    • G10L19/04—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
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques

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)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Un codificador de audio para codificar una senal de audio, comprende: un primer procesador de codificacion (600) para codificar una primera porcion de senal de audio en un dominio de frecuencia, en donde el primer procesador de codificacion (600) comprende: un conversor de frecuencia y de tiempo (602) para convertir la primera porcion de senal de audio en una representacion de un dominio de frecuencia que tiene lineas espectrales hasta una frecuencia maxima de la primera porcion de senal de audio; un analizador (604) para analizar la representacion del dominio de frecuencia hasta la frecuencia maxima para determinar primeras porciones espectrales para codificar con una primera resolucion espectral y segundas regiones espectrales para codificar con una segunda resolucion espectral, donde la segunda resolucion espectral es inferior a la primera resolucion espectral; un codificador espectral (606) para codificar las primeras porciones espectrales con la primera resolucion espectral y para codificar las segundas porciones espectrales con la segunda resolucion espectral; un segundo procesador de codificacion (610) para codificar una segunda porcion de senal de audio diferente en el dominio de tiempo; un controlador (620) configurado para analizar la senal de audio y para determinar que porcion de la senal de audio es la primera porcion de senal de audio codificada en el dominio de frecuencia y que porcion de la senal de audio es la segunda porcion de senal de audio codificada en el dominio de tiempo; y un formador de senales codificadas (630) para formar una senal de audio codificada que comprende una primera porcion de senales codificadas para la primera porcion de senal de audio y una segunda porcion de senales codificadas para la segunda porcion de senales de audio.
MX2017001235A 2014-07-28 2015-07-24 Codificador y decodificador de audio usando un procesador de dominio de frecuencia con un relleno de intervalo de banda completa y un procesador de dominio de tiempo. MX362424B (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14178817.4A EP2980794A1 (en) 2014-07-28 2014-07-28 Audio encoder and decoder using a frequency domain processor and a time domain processor
PCT/EP2015/067003 WO2016016123A1 (en) 2014-07-28 2015-07-24 Audio encoder and decoder using a frequency domain processor with full-band gap filling and a time domain processor

Publications (2)

Publication Number Publication Date
MX2017001235A MX2017001235A (es) 2017-07-07
MX362424B true MX362424B (es) 2019-01-17

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MX2017001235A MX362424B (es) 2014-07-28 2015-07-24 Codificador y decodificador de audio usando un procesador de dominio de frecuencia con un relleno de intervalo de banda completa y un procesador de dominio de tiempo.

Country Status (19)

Country Link
US (5) US10332535B2 (es)
EP (5) EP2980794A1 (es)
JP (5) JP6549217B2 (es)
KR (1) KR102009210B1 (es)
CN (6) CN113963704B (es)
AR (1) AR101344A1 (es)
AU (1) AU2015295605B2 (es)
BR (4) BR122022012700B1 (es)
CA (1) CA2955095C (es)
ES (3) ES2733207T3 (es)
MX (1) MX362424B (es)
MY (1) MY187280A (es)
PL (3) PL4239634T3 (es)
PT (1) PT3186809T (es)
RU (1) RU2671997C2 (es)
SG (1) SG11201700685XA (es)
TR (1) TR201908602T4 (es)
TW (1) TWI570710B (es)
WO (1) WO2016016123A1 (es)

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