BR112017000629A2 - aparelho de codificação de sinal de áudio, aparelho de decodificação de sinal de áudio, método de codificação de sinal de áudio, e método de decodificação de sinal de áudio - Google Patents

aparelho de codificação de sinal de áudio, aparelho de decodificação de sinal de áudio, método de codificação de sinal de áudio, e método de decodificação de sinal de áudio

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Publication number
BR112017000629A2
BR112017000629A2 BR112017000629A BR112017000629A BR112017000629A2 BR 112017000629 A2 BR112017000629 A2 BR 112017000629A2 BR 112017000629 A BR112017000629 A BR 112017000629A BR 112017000629 A BR112017000629 A BR 112017000629A BR 112017000629 A2 BR112017000629 A2 BR 112017000629A2
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BR
Brazil
Prior art keywords
audio signal
subband
quantizer
signal coding
signal decoding
Prior art date
Application number
BR112017000629A
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English (en)
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BR112017000629B1 (pt
Inventor
Ehara Hiroyuki
Kawashima Takuya
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Panasonic Ip Corp America
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Publication date
Application filed by Panasonic Ip Corp America filed Critical Panasonic Ip Corp America
Publication of BR112017000629A2 publication Critical patent/BR112017000629A2/pt
Publication of BR112017000629B1 publication Critical patent/BR112017000629B1/pt

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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
    • G10L19/002—Dynamic bit allocation
    • 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
    • G10L19/0204—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 subband decomposition
    • 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
    • G10L19/0204—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 subband decomposition
    • G10L19/0208—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
    • G10L19/032—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
    • G10L19/08—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
    • G10L19/135—Vector sum excited linear prediction [VSELP]
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • 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
    • G10L25/18—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 spectral information of each sub-band
    • 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
    • G10L19/035—Scalar quantisation

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)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

a presente invenção refere-se a um aparelho de codificação de sinal de áudio (100) que inclui um transformador de tempo-frequência (101) que emite espectros de sub-banda de um sinal de entrada, um quantizador de energia de sub-banda (102), um calculador de tonalidade (103) que analisa a tonalidade dos espectros de sub-banda, um alocador de bits (104) que seleciona uma segunda sub-banda na qual a quantização é executada por um segundo quantizador com base no resultado da análise da tonalidade e da energia de sub-banda quantizada, e determina um primeiro número de bits a serem alocados em uma primeira sub-banda na qual a quantização é executada por um primeiro quantizador, o primeiro quantizador (106) que executa a codificação usando o primeiro número de bits, o segundo quantizador (107) que executa a codificação usando um filtro de passo, e um multiplexador (108).
BR112017000629-4A 2014-07-25 2015-07-03 aparelho de codificação de sinal de áudio e método de codificação de sinal de áudio BR112017000629B1 (pt)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201462028805P 2014-07-25 2014-07-25
US62/028,805 2014-07-25
JP2014-219214 2014-10-28
JP2014219214 2014-10-28
PCT/JP2015/003358 WO2016013164A1 (ja) 2014-07-25 2015-07-03 音響信号符号化装置、音響信号復号装置、音響信号符号化方法および音響信号復号方法

Publications (2)

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BR112017000629A2 true BR112017000629A2 (pt) 2017-11-14
BR112017000629B1 BR112017000629B1 (pt) 2021-02-17

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US (3) US10311879B2 (pt)
EP (3) EP3723086A1 (pt)
JP (1) JP6717746B2 (pt)
KR (1) KR102165403B1 (pt)
CN (2) CN114023341A (pt)
AU (1) AU2015291897B2 (pt)
BR (1) BR112017000629B1 (pt)
CA (1) CA2958429C (pt)
MX (1) MX356371B (pt)
PL (2) PL3174050T3 (pt)
RU (1) RU2669706C2 (pt)
SG (1) SG11201701197TA (pt)
WO (1) WO2016013164A1 (pt)

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Also Published As

Publication number Publication date
SG11201701197TA (en) 2017-03-30
RU2669706C2 (ru) 2018-10-15
KR20170035827A (ko) 2017-03-31
US20200219518A1 (en) 2020-07-09
PL3174050T3 (pl) 2019-04-30
RU2017102311A (ru) 2018-08-27
CN114023341A (zh) 2022-02-08
AU2015291897A1 (en) 2017-03-09
US20190228783A1 (en) 2019-07-25
JP6717746B2 (ja) 2020-07-01
JPWO2016013164A1 (ja) 2017-04-27
EP3174050B1 (en) 2018-11-14
US10311879B2 (en) 2019-06-04
EP3413307B1 (en) 2020-07-15
US11521625B2 (en) 2022-12-06
BR112017000629B1 (pt) 2021-02-17
RU2017102311A3 (pt) 2018-08-27
EP3174050A4 (en) 2017-05-31
MX2016015786A (es) 2017-02-27
PL3413307T3 (pl) 2021-01-11
CN106133831A (zh) 2016-11-16
US20170069328A1 (en) 2017-03-09
EP3174050A1 (en) 2017-05-31
MX356371B (es) 2018-05-25
CN106133831B (zh) 2021-10-26
CA2958429A1 (en) 2016-01-28
EP3723086A1 (en) 2020-10-14
AU2015291897B2 (en) 2019-02-21
US10643623B2 (en) 2020-05-05
WO2016013164A1 (ja) 2016-01-28
KR102165403B1 (ko) 2020-10-14
CA2958429C (en) 2020-03-10
EP3413307A1 (en) 2018-12-12

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Owner name: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWAN

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