BRPI0808428A8 - Dispostivo de codificação e método de codificação - Google Patents

Dispostivo de codificação e método de codificação

Info

Publication number
BRPI0808428A8
BRPI0808428A8 BRPI0808428A BRPI0808428A BRPI0808428A8 BR PI0808428 A8 BRPI0808428 A8 BR PI0808428A8 BR PI0808428 A BRPI0808428 A BR PI0808428A BR PI0808428 A BRPI0808428 A BR PI0808428A BR PI0808428 A8 BRPI0808428 A8 BR PI0808428A8
Authority
BR
Brazil
Prior art keywords
gain
coding
shape
vector
subband
Prior art date
Application number
BRPI0808428A
Other languages
English (en)
Inventor
Oshikiri Masahiro
Morii Toshiyuki
Yamanashi Tomofumi
Original Assignee
Panasonic Corp
Panasonic Ip Corp America
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 Panasonic Corp, Panasonic Ip Corp America filed Critical Panasonic Corp
Publication of BRPI0808428A2 publication Critical patent/BRPI0808428A2/pt
Publication of BRPI0808428A8 publication Critical patent/BRPI0808428A8/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
    • 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
    • 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
    • G10L19/02—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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • 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
    • G10L19/038—Vector quantisation, e.g. TwinVQ audio
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • 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

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

DISPOSITIVO DE CODIFICAÇÃO E MÉTODO DE CODIFICAÇÃO. A presente invenção refere-se a um dispositivo de codificação de voz o qual pode codificar precisamente uma forma de espectro de um sinal que tem uma tonalidade forte tal como uma vogal. O dispositivo inclui: uma unidade de constituição de sub-banda (151) a qual divide um coeficiente de conversão de erro da primeira camada a ser codificada em M sub-bandas de modo a gerar M coeficientes de conversão de sub-banda; uma unidade de codificação de vetor de forma (152) a qual executa uma codificação sobre cada um dos M coeficientes de conversão de sub-banda de modo a obter M informações codificadas de forma e calcula um ganho-alvo de cada um dos M coeficientes de conversão de sub-banda; uma unidade de formação de vetor de ganho (153) a qual forma um vetor de ganho (154) a qual codifica o vetor de ganho de modo a obter as informações codificadas de ganho; e uma unidade de seção de multiplexação (155) a qual multiplexa as informações codificadas de forma com as informações codificadas de ganho.
BRPI0808428A 2007-03-02 2008-02-29 Dispostivo de codificação e método de codificação BRPI0808428A8 (pt)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP2007053502 2007-03-02
JP2007-053502 2007-03-02
JP2007-133545 2007-05-18
JP2007133545 2007-05-18
JP2007185077 2007-07-13
JP2007-185077 2007-07-13
JP2008-045259 2008-02-26
JP2008045259A JP4871894B2 (ja) 2007-03-02 2008-02-26 符号化装置、復号装置、符号化方法および復号方法
PCT/JP2008/000408 WO2008120440A1 (ja) 2007-03-02 2008-02-29 符号化装置および符号化方法

Publications (2)

Publication Number Publication Date
BRPI0808428A2 BRPI0808428A2 (pt) 2014-07-22
BRPI0808428A8 true BRPI0808428A8 (pt) 2016-12-20

Family

ID=39808027

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0808428A BRPI0808428A8 (pt) 2007-03-02 2008-02-29 Dispostivo de codificação e método de codificação

Country Status (11)

Country Link
US (3) US8554549B2 (pt)
EP (1) EP2128857B1 (pt)
JP (1) JP4871894B2 (pt)
KR (1) KR101414354B1 (pt)
CN (3) CN103903626B (pt)
AU (1) AU2008233888B2 (pt)
BR (1) BRPI0808428A8 (pt)
MY (1) MY147075A (pt)
RU (3) RU2471252C2 (pt)
SG (2) SG178728A1 (pt)
WO (1) WO2008120440A1 (pt)

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