BRPI0515453A - aparelho de codificação escalável, aparelho de decodificação escalável, método de codificação escalável método de decodificação escalável, aparelho de terminal de comunicação, e aparelho de estação de base - Google Patents

aparelho de codificação escalável, aparelho de decodificação escalável, método de codificação escalável método de decodificação escalável, aparelho de terminal de comunicação, e aparelho de estação de base

Info

Publication number
BRPI0515453A
BRPI0515453A BRPI0515453-7A BRPI0515453A BRPI0515453A BR PI0515453 A BRPI0515453 A BR PI0515453A BR PI0515453 A BRPI0515453 A BR PI0515453A BR PI0515453 A BRPI0515453 A BR PI0515453A
Authority
BR
Brazil
Prior art keywords
scalable
lsp
coding
lpc
broadband
Prior art date
Application number
BRPI0515453-7A
Other languages
English (en)
Inventor
Hiroyuki Ehara
Original Assignee
Matsushita Electric Ind Co Ltd
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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of BRPI0515453A publication Critical patent/BRPI0515453A/pt

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/07—Line spectrum pair [LSP] vocoders
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L2019/0001—Codebooks
    • G10L2019/0004—Design or structure of the codebook
    • G10L2019/0005—Multi-stage vector quantisation

Abstract

APARELHO DE CODIFICAçãO ESCALáVEL, APARELHO DE DECODIFICAçãO ESCALáVEL, MéTODO DE CODIFICAçãO ESCALáVEL MéTODO DE DECODIFICAçãO ESCALáVEL, APARELHO DE TERMINAL DE COMUNICAçãO, E APARELHO DE ESTAçãO DE BASE. A presente invenção refere-se a um aparelha de codificação escalável, um aparelho de decodificação escalável, e similares os quais podem conseguir uma codificação de LSP escalável de banda que exibe tanto uma alta eficiência de quantização quanto um alto desempenho. Nestes aparelhos, uma parte de conversão de banda estreita para banda larga (200) recebe e converte um LSP de banda estreita quantizado para uma banda larga, e então emite o LSP de banda estreita quantizado como convertido (isto é, um parâmetro de LSP de banda larga convertido) para uma parte de conversão de LSP para LPC (800). A parte de conversão de LSP para LPC (800) converte o LSP de banda estreita quantizado como convertido para um coeficiente de predição linear e então emite-o para uma parte de pré-enfatização (801). A parte de pré-enfatízação (801) calcula e emite o coeficiente de predição linear pré-enfatizado para uma parte de conversão de LPC para LSP (802). A parte de conversão de LPC para LSP (802) converte o coeficiente de predição linear pré-enfatizado para um LSP de banda estreita quantizado pré-enfatizado como convertido para banda larga, e então emite o para uma parte de quantização de predição (803).
BRPI0515453-7A 2004-09-17 2005-09-15 aparelho de codificação escalável, aparelho de decodificação escalável, método de codificação escalável método de decodificação escalável, aparelho de terminal de comunicação, e aparelho de estação de base BRPI0515453A (pt)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2004272481 2004-09-17
JP2004329094 2004-11-12
JP2005255242 2005-09-02
PCT/JP2005/017054 WO2006030865A1 (ja) 2004-09-17 2005-09-15 スケーラブル符号化装置、スケーラブル復号化装置、スケーラブル符号化方法、スケーラブル復号化方法、通信端末装置および基地局装置

Publications (1)

Publication Number Publication Date
BRPI0515453A true BRPI0515453A (pt) 2008-07-22

Family

ID=36060115

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0515453-7A BRPI0515453A (pt) 2004-09-17 2005-09-15 aparelho de codificação escalável, aparelho de decodificação escalável, método de codificação escalável método de decodificação escalável, aparelho de terminal de comunicação, e aparelho de estação de base

Country Status (8)

Country Link
US (2) US7848925B2 (pt)
EP (2) EP2273494A3 (pt)
JP (2) JP4963963B2 (pt)
KR (1) KR20070051910A (pt)
CN (2) CN102103860B (pt)
AT (1) ATE534990T1 (pt)
BR (1) BRPI0515453A (pt)
WO (1) WO2006030865A1 (pt)

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Also Published As

Publication number Publication date
CN101023471B (zh) 2011-05-25
JPWO2006030865A1 (ja) 2008-05-15
WO2006030865A1 (ja) 2006-03-23
EP1791116A4 (en) 2007-11-14
EP1791116B1 (en) 2011-11-23
ATE534990T1 (de) 2011-12-15
US7848925B2 (en) 2010-12-07
EP2273494A3 (en) 2012-11-14
EP2273494A2 (en) 2011-01-12
JP5143193B2 (ja) 2013-02-13
US20110040558A1 (en) 2011-02-17
KR20070051910A (ko) 2007-05-18
CN102103860A (zh) 2011-06-22
JP2010244078A (ja) 2010-10-28
CN101023471A (zh) 2007-08-22
US20080059166A1 (en) 2008-03-06
EP1791116A1 (en) 2007-05-30
CN102103860B (zh) 2013-05-08
JP4963963B2 (ja) 2012-06-27
US8712767B2 (en) 2014-04-29

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