BRPI0518193A - aparelho e método de codificação vocal, aparelhos de estação móvel e de base de comunicação de rádio - Google Patents

aparelho e método de codificação vocal, aparelhos de estação móvel e de base de comunicação de rádio

Info

Publication number
BRPI0518193A
BRPI0518193A BRPI0518193-3A BRPI0518193A BRPI0518193A BR PI0518193 A BRPI0518193 A BR PI0518193A BR PI0518193 A BRPI0518193 A BR PI0518193A BR PI0518193 A BRPI0518193 A BR PI0518193A
Authority
BR
Brazil
Prior art keywords
section
transform
nonlinear
outputs
function
Prior art date
Application number
BRPI0518193-3A
Other languages
English (en)
Inventor
Masahiro Oshikiri
Original Assignee
Matsushita Electric Industrial 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 Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of BRPI0518193A publication Critical patent/BRPI0518193A/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
    • 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

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

APARELHO E MéTODO DE CODIFICAçãO VOCAL, APARELHOS DE ESTAçãO MóVEL E DE BASE DE COMUNICAçãO DE RADIO. A presente invenção refere-se a um codificador de som que tem um desempenho de quantização aperfeiçoado, enquanto suprimindo um aumento da taxa de bits para um nível mais baixo Em uma unidade de codificação de segunda camada (40), uma seção de cálculo de desvio padrão (408) calcula o desvio padrão cYc de um espectro de decodificação de primeira camada após a multiplicação de razão de fator de escala de decodificação e emite o desvio padrão cc para uma seção de seleção (409), a seção de seleção (409) seleciona uma função de transformada linear como a função para a transformada não linear do espectro residual de acordo com o desvio padrão cc, uma seção de função de transformada não linear (410) seleciona uma das funções de transformada não lineares #1 a #N preparadas de acordo com o resultado da seleção pela seção de seleção (409) e emite a selecionada uma para uma seção de transformada inversa (411), e a seção de transformada inversa (411) sujeita a transformada inversa (expansão) a um candidato de espectro residual armazenado em um livro de código de espectro residual (412) utilizando a função de transformada não linear emitida da seção de função de transformada não linear (410) e emite o resultado para um somador (413).
BRPI0518193-3A 2004-10-27 2005-10-25 aparelho e método de codificação vocal, aparelhos de estação móvel e de base de comunicação de rádio BRPI0518193A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004312262 2004-10-27
PCT/JP2005/019579 WO2006046547A1 (ja) 2004-10-27 2005-10-25 音声符号化装置および音声符号化方法

Publications (1)

Publication Number Publication Date
BRPI0518193A true BRPI0518193A (pt) 2008-11-04

Family

ID=36227787

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0518193-3A BRPI0518193A (pt) 2004-10-27 2005-10-25 aparelho e método de codificação vocal, aparelhos de estação móvel e de base de comunicação de rádio

Country Status (8)

Country Link
US (1) US8099275B2 (pt)
EP (1) EP1806737A4 (pt)
JP (1) JP4859670B2 (pt)
KR (1) KR20070070189A (pt)
CN (1) CN101044552A (pt)
BR (1) BRPI0518193A (pt)
RU (1) RU2007115914A (pt)
WO (1) WO2006046547A1 (pt)

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US7991611B2 (en) * 2005-10-14 2011-08-02 Panasonic Corporation Speech encoding apparatus and speech encoding method that encode speech signals in a scalable manner, and speech decoding apparatus and speech decoding method that decode scalable encoded signals
BRPI0619258A2 (pt) * 2005-11-30 2011-09-27 Matsushita Electric Industrial Co., Ltd aparelho de codificação de sub-banda e método de codificação de sub-banda
US20100161323A1 (en) * 2006-04-27 2010-06-24 Panasonic Corporation Audio encoding device, audio decoding device, and their method
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CN101527138B (zh) * 2008-03-05 2011-12-28 华为技术有限公司 超宽带扩展编码、解码方法、编解码器及超宽带扩展系统
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CN101582259B (zh) * 2008-05-13 2012-05-09 华为技术有限公司 立体声信号编解码方法、装置及编解码系统
JPWO2010103854A1 (ja) * 2009-03-13 2012-09-13 パナソニック株式会社 音声符号化装置、音声復号装置、音声符号化方法及び音声復号方法
CN102081927B (zh) 2009-11-27 2012-07-18 中兴通讯股份有限公司 一种可分层音频编码、解码方法及系统
US9230551B2 (en) * 2010-10-18 2016-01-05 Nokia Technologies Oy Audio encoder or decoder apparatus
WO2016162283A1 (en) * 2015-04-07 2016-10-13 Dolby International Ab Audio coding with range extension
JP7533440B2 (ja) 2019-03-05 2024-08-14 ソニーグループ株式会社 信号処理装置および方法、並びにプログラム
CN120636422B (zh) * 2025-08-12 2025-10-31 中国人民解放军海军航空大学 一种基于动态声学掩蔽的航空管制音频编码方法及系统

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Also Published As

Publication number Publication date
JP4859670B2 (ja) 2012-01-25
WO2006046547A1 (ja) 2006-05-04
CN101044552A (zh) 2007-09-26
RU2007115914A (ru) 2008-11-10
EP1806737A4 (en) 2010-08-04
US8099275B2 (en) 2012-01-17
US20080091440A1 (en) 2008-04-17
EP1806737A1 (en) 2007-07-11
KR20070070189A (ko) 2007-07-03
JPWO2006046547A1 (ja) 2008-05-22

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]
B15K Others concerning applications: alteration of classification

Ipc: G10L 19/02 (2013.01)