BRPI0910512A2 - "codificador e decodificador de áudio para codificar e decodificar amostras de áudio" - Google Patents

"codificador e decodificador de áudio para codificar e decodificar amostras de áudio"

Info

Publication number
BRPI0910512A2
BRPI0910512A2 BRPI0910512A BRPI0910512A BRPI0910512A2 BR PI0910512 A2 BRPI0910512 A2 BR PI0910512A2 BR PI0910512 A BRPI0910512 A BR PI0910512A BR PI0910512 A BRPI0910512 A BR PI0910512A BR PI0910512 A2 BRPI0910512 A2 BR PI0910512A2
Authority
BR
Brazil
Prior art keywords
encoder
audio
encoding
samples
decoder
Prior art date
Application number
BRPI0910512A
Other languages
English (en)
Inventor
Stefan Bayer
Bruno Bessette
Philippe Gournay
Bernhard Grill
Jérémie Lecomte
Markus Multrus
Original Assignee
Fraunhofer Ges Forschung
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 Forschung, Voiceage Corp filed Critical Fraunhofer Ges Forschung
Publication of BRPI0910512A2 publication Critical patent/BRPI0910512A2/pt
Publication of BRPI0910512B1 publication Critical patent/BRPI0910512B1/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
    • 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

codificador e decodificador de áudio para codificar e decodificar amostras de áudio codificador de áudio ( 100) para codificar amostras de áudio, incluindo um codificador de introdução de efeito de dobragem de domínio de tempo (110) para codificar amostras de áudio em um primeiro domínio de codificação, sendo que o primeiro codificador de introdução de efeito de dobragem de domínio de tempo ( 11 o) apresenta uma primeira regra de framing, uma janela de início e uma janela de parada. o codificador de áudio ( 100) inclui ainda um segundo codificador ( 120) para codificar amostras em um segundo domínio de codificação, sendo que o segundo codificador (120) apresenta uma regra de frame diferente. o codificador de áudio (100) inclui ainda um controlador (130) que muda do primeiro codificador (110) para o segundo codificador (120) em resposta à característica das amostras de áudio, e para modificar a segunda regra de framing em resposta à mudança do primeiro codificador (110) para o segundo codificador (120), ou para modificar a janela de início ou a janela de parada do primeiro codificador (110), onde a segunda regra de framing permanece inalterada.
BRPI0910512-3A 2008-07-11 2009-06-26 codificador e decodificador de áudio para codificar e decodificar amostras de áudio BRPI0910512B1 (pt)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US7985608P 2008-07-11 2008-07-11
US61/079,856 2008-07-11
US10382508P 2008-10-08 2008-10-08
US61/103,825 2008-10-08
PCT/EP2009/004651 WO2010003563A1 (en) 2008-07-11 2009-06-26 Audio encoder and decoder for encoding and decoding audio samples

Publications (2)

Publication Number Publication Date
BRPI0910512A2 true BRPI0910512A2 (pt) 2019-05-28
BRPI0910512B1 BRPI0910512B1 (pt) 2020-10-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0910512-3A BRPI0910512B1 (pt) 2008-07-11 2009-06-26 codificador e decodificador de áudio para codificar e decodificar amostras de áudio

Country Status (21)

Country Link
US (1) US8892449B2 (pt)
EP (2) EP3002750B1 (pt)
JP (2) JP5551695B2 (pt)
KR (1) KR101325335B1 (pt)
CN (1) CN102089811B (pt)
AR (1) AR072738A1 (pt)
AU (1) AU2009267466B2 (pt)
BR (1) BRPI0910512B1 (pt)
CA (3) CA2730204C (pt)
CO (1) CO6351837A2 (pt)
EG (1) EG26653A (pt)
ES (2) ES2657393T3 (pt)
HK (1) HK1223453A1 (pt)
MX (1) MX2011000366A (pt)
MY (3) MY159110A (pt)
PL (2) PL3002750T3 (pt)
PT (1) PT3002750T (pt)
RU (1) RU2515704C2 (pt)
TW (1) TWI459379B (pt)
WO (1) WO2010003563A1 (pt)
ZA (1) ZA201100089B (pt)

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US8892449B2 (en) 2014-11-18
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CA2871372A1 (en) 2010-01-14
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