BR112017001297A2 - codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo - Google Patents

codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo

Info

Publication number
BR112017001297A2
BR112017001297A2 BR112017001297A BR112017001297A BR112017001297A2 BR 112017001297 A2 BR112017001297 A2 BR 112017001297A2 BR 112017001297 A BR112017001297 A BR 112017001297A BR 112017001297 A BR112017001297 A BR 112017001297A BR 112017001297 A2 BR112017001297 A2 BR 112017001297A2
Authority
BR
Brazil
Prior art keywords
audio signal
spectral
frequency domain
signal
domain processor
Prior art date
Application number
BR112017001297A
Other languages
English (en)
Inventor
Martin Dietz
Sascha Disch
Guillaume Fuchs
Bernhard Grill
Markus Multrus
Matthias Neusinger
Emmanuel Ravelli
Markus Schnell
Benjamin Schubert
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
Priority to BR122022012700-2A priority Critical patent/BR122022012700B1/pt
Priority to BR122022012519-0A priority patent/BR122022012519B1/pt
Priority to BR122022012517-4A priority patent/BR122022012517B1/pt
Priority to BR122022012616-2A priority patent/BR122022012616B1/pt
Publication of BR112017001297A2 publication Critical patent/BR112017001297A2/pt

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
    • G10L19/04—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

um codificador de áudio para codificação de um sinal de áudio, compreendendo: um primeiro processador de codificação (600) de uma primeira parte do sinal de áudio em um domínio de frequência, caracterizado pelo primeiro processador de codificação (600) compreender: um conversor de tempo-frequência (602) para a primeira parte do sinal de áudio em uma representação de domínio de frequência, tendo linhas espectrais até uma frequência máxima da primeira parte do sinal de áudio; um analisador (604) da representação do domínio de frequência até a frequência máxima para determinar as partes espectrais primárias a serem codificadas com uma primeira resolução espectral e as regiões espectrais secundárias a serem codificadas com uma segunda resolução espectral, a segunda resolução espectral sendo mais baixa do que a primeira resolução espectral; um codificador espectral (606) para das partes espectrais primárias da representação do domínio de frequência com a primeira resolução espectral e para codificação das partes espectrais secundárias com a segunda resolução espectral; um segundo processador de codificação (610) para uma segunda parte do sinal de áudio diferente no domínio de tempo; um controlador (620) configurado para análise do sinal de áudio e para determinação de qual parte do sinal de áudio é a primeira parte do sinal de áudio codificada no domínio de frequência e qual parte do sinal de áudio é a segunda parte do sinal de áudio codificada no domínio de tempo; e um modulador de sinal codificado (630) para modulação de um sinal de áudio, compreendendo uma primeira parte do sinal codificado para a primeira parte do sinal e uma segunda parte do sinal codificado para a segunda parte do sinal.
BR112017001297A 2014-07-28 2015-07-24 codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo BR112017001297A2 (pt)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BR122022012700-2A BR122022012700B1 (pt) 2014-07-28 2015-07-24 Codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo
BR122022012519-0A BR122022012519B1 (pt) 2014-07-28 2015-07-24 Codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo
BR122022012517-4A BR122022012517B1 (pt) 2014-07-28 2015-07-24 Codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo
BR122022012616-2A BR122022012616B1 (pt) 2014-07-28 2015-07-24 Codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo

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 (1)

Publication Number Publication Date
BR112017001297A2 true BR112017001297A2 (pt) 2017-11-14

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BR122022012700-2A BR122022012700B1 (pt) 2014-07-28 2015-07-24 Codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo
BR122022012517-4A BR122022012517B1 (pt) 2014-07-28 2015-07-24 Codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo
BR112017001297A BR112017001297A2 (pt) 2014-07-28 2015-07-24 codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo
BR122022012519-0A BR122022012519B1 (pt) 2014-07-28 2015-07-24 Codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo
BR122022012616-2A BR122022012616B1 (pt) 2014-07-28 2015-07-24 Codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo

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BR122022012517-4A BR122022012517B1 (pt) 2014-07-28 2015-07-24 Codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo

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BR122022012616-2A BR122022012616B1 (pt) 2014-07-28 2015-07-24 Codificador e decodificador de áudio utilizando um processador de domínio de frequência com preenchimento de lacuna de banda total e um processador de domínio de tempo

Country Status (19)

Country Link
US (5) US10332535B2 (pt)
EP (4) EP2980794A1 (pt)
JP (4) JP6549217B2 (pt)
KR (1) KR102009210B1 (pt)
CN (6) CN107077858B (pt)
AR (1) AR101344A1 (pt)
AU (1) AU2015295605B2 (pt)
BR (5) BR122022012700B1 (pt)
CA (1) CA2955095C (pt)
ES (2) ES2733207T3 (pt)
MX (1) MX362424B (pt)
MY (1) MY187280A (pt)
PL (2) PL3186809T3 (pt)
PT (1) PT3186809T (pt)
RU (1) RU2671997C2 (pt)
SG (1) SG11201700685XA (pt)
TR (1) TR201908602T4 (pt)
TW (1) TWI570710B (pt)
WO (1) WO2016016123A1 (pt)

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