BR112012025573A2 - Aparelho de processamento de sinal, métodos de processamento de sinal, de codificação e de decodificação, programa, codificador, e, decodificador - Google Patents

Aparelho de processamento de sinal, métodos de processamento de sinal, de codificação e de decodificação, programa, codificador, e, decodificador

Info

Publication number
BR112012025573A2
BR112012025573A2 BR112012025573A BR112012025573A BR112012025573A2 BR 112012025573 A2 BR112012025573 A2 BR 112012025573A2 BR 112012025573 A BR112012025573 A BR 112012025573A BR 112012025573 A BR112012025573 A BR 112012025573A BR 112012025573 A2 BR112012025573 A2 BR 112012025573A2
Authority
BR
Brazil
Prior art keywords
signal processing
high frequency
subband power
frequency subband
frequency
Prior art date
Application number
BR112012025573A
Other languages
English (en)
Inventor
Yamamoto Yuki
Chinen Toru
Honma Hiroyuki
Mitsufuji Yuhki
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of BR112012025573A2 publication Critical patent/BR112012025573A2/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
    • 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
    • G10L21/04—Time compression or expansion
    • 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
    • G10L19/04—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
    • 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
    • G10L21/0388—Details of processing therefor
    • 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
    • G10L19/04—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
    • G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

APARELHO DE PROCESSAMENTO DE SINAL, MÉTODOS DE PROCESSAMENTO DE SINAL, DE CODIFICAÇÃO E DE DECODIFICAÇÃO, MEIO DE GRAVAÇÃO, CODIFICADOR, E, DECODIFICADOR. São divulgados um dispositivo e método de processamento de sinal, um dispositivo e método de codificação, um dispositivo e método de decodificação, e um programa que habilitam a reprodução de sinais de música com qualidade de som superior pela ampliação da largura de faixa de frequência. Uma unidade de conversão de frequência de amostragem converte a frequência de amostragem de um sinal de entrada e um circuito de divisão de subfaixa divide o sinal de entrada convertido em sinais de subfaixa para o número de subfaixas associadas com a frequência de amostragem. Um circuito de cálculo de potência de subfaixa de pseudoalta frequência calcula a potência de subfaixa de pseudoalta frequência com base no sinal de baixa frequência do sinal de entrada e em uma tabela de coeficiente que compreende os coeficientes para cada subfaixa de alta frequência. Um circuito de cálculo de diferencial de potência da subfaixa de pseudoalta frequência compara a potência da subfaixa de alta frequência e a potência da subfaixa de pseudoalta frequência e seleciona uma tabela de coeficiente a partir da pluralidade de tabelas de coeficiente. O índice de coeficiente que identifica a tabela de coeficiente é codificado e usado como dados de codificação de alta frequência. Este método pode ser aplicado em dispositivos de codificação.
BR112012025573A 2010-04-13 2011-04-11 Aparelho de processamento de sinal, métodos de processamento de sinal, de codificação e de decodificação, programa, codificador, e, decodificador BR112012025573A2 (pt)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2010092689 2010-04-13
JP2011017230 2011-01-28
JP2011072382A JP5652658B2 (ja) 2010-04-13 2011-03-29 信号処理装置および方法、符号化装置および方法、復号装置および方法、並びにプログラム
PCT/JP2011/059029 WO2011129304A1 (ja) 2010-04-13 2011-04-11 信号処理装置および方法、符号化装置および方法、復号装置および方法、並びにプログラム

Publications (1)

Publication Number Publication Date
BR112012025573A2 true BR112012025573A2 (pt) 2017-08-29

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BR112012025573A BR112012025573A2 (pt) 2010-04-13 2011-04-11 Aparelho de processamento de sinal, métodos de processamento de sinal, de codificação e de decodificação, programa, codificador, e, decodificador

Country Status (12)

Country Link
US (1) US9583112B2 (pt)
EP (1) EP2560166B1 (pt)
JP (1) JP5652658B2 (pt)
KR (1) KR20130042472A (pt)
CN (1) CN102859593B (pt)
BR (1) BR112012025573A2 (pt)
CA (1) CA2794894A1 (pt)
MX (1) MX2012011602A (pt)
RU (1) RU2571565C2 (pt)
TW (1) TWI480863B (pt)
WO (1) WO2011129304A1 (pt)
ZA (1) ZA201207451B (pt)

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Also Published As

Publication number Publication date
EP2560166B1 (en) 2015-03-18
JP2012168496A (ja) 2012-09-06
RU2571565C2 (ru) 2015-12-20
US20130202118A1 (en) 2013-08-08
MX2012011602A (es) 2012-11-06
EP2560166A4 (en) 2013-12-11
RU2012142675A (ru) 2014-04-10
WO2011129304A1 (ja) 2011-10-20
KR20130042472A (ko) 2013-04-26
TWI480863B (zh) 2015-04-11
JP5652658B2 (ja) 2015-01-14
ZA201207451B (en) 2013-06-26
CA2794894A1 (en) 2011-10-20
TW201209808A (en) 2012-03-01
CN102859593B (zh) 2014-12-17
EP2560166A1 (en) 2013-02-20
US9583112B2 (en) 2017-02-28
CN102859593A (zh) 2013-01-02

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