BRPI0514998A - equipamento de codificação de sinal de canal múltiplo e equipamento de decodificação de sinal de canal múltiplo - Google Patents

equipamento de codificação de sinal de canal múltiplo e equipamento de decodificação de sinal de canal múltiplo

Info

Publication number
BRPI0514998A
BRPI0514998A BRPI0514998-3A BRPI0514998A BRPI0514998A BR PI0514998 A BRPI0514998 A BR PI0514998A BR PI0514998 A BRPI0514998 A BR PI0514998A BR PI0514998 A BRPI0514998 A BR PI0514998A
Authority
BR
Brazil
Prior art keywords
channel signal
equipment
multi channel
signals
encoding
Prior art date
Application number
BRPI0514998-3A
Other languages
English (en)
Inventor
Michiyo Goto
Chun Woei Teo
Sua Hong Neo
Koji Yoshida
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 BRPI0514998A publication Critical patent/BRPI0514998A/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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • 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
    • 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
    • G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding
    • 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
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Circuits Of Receivers In General (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Selective Calling Equipment (AREA)

Abstract

EQUIPAMENTO DE CODIFICAçãO DE SINAL DE CANAL MúLTIPLO E EQUIPAMENTO DE DECODIFICAçãO DE SINAL DE CANAL MúLTIPLO Um equipamento de codificação de sinal de canal múltiplo é provido para apresentação de um som de alta qualidade a uma taxa de bit baixa. No equipamento de codificação de sinal de canal múltiplo (2), uma parte de conversão (10) gera sinais de canal de referência monaurais para um número N de sinais de canal. Uma parte de codificação (11) codifica o sinal de canal de referência gerado. Uma parte de análise de sinal (12) extrai parâmetros indicando características de cada um do número N de sinais de cana|. Uma parte de MUX (13) multiplexa o sinal de canal de referência codificado com os parâmetros extraídos.
BRPI0514998-3A 2004-08-26 2005-08-24 equipamento de codificação de sinal de canal múltiplo e equipamento de decodificação de sinal de canal múltiplo BRPI0514998A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004247404 2004-08-26
PCT/JP2005/015375 WO2006022308A1 (ja) 2004-08-26 2005-08-24 マルチチャネル信号符号化装置およびマルチチャネル信号復号装置

Publications (1)

Publication Number Publication Date
BRPI0514998A true BRPI0514998A (pt) 2008-07-01

Family

ID=35967516

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0514998-3A BRPI0514998A (pt) 2004-08-26 2005-08-24 equipamento de codificação de sinal de canal múltiplo e equipamento de decodificação de sinal de canal múltiplo

Country Status (9)

Country Link
US (1) US7630396B2 (pt)
EP (1) EP1783745B1 (pt)
JP (1) JP4963962B2 (pt)
KR (1) KR20070051864A (pt)
CN (1) CN101010725A (pt)
AT (1) ATE442644T1 (pt)
BR (1) BRPI0514998A (pt)
DE (1) DE602005016571D1 (pt)
WO (1) WO2006022308A1 (pt)

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WO2007052612A1 (ja) * 2005-10-31 2007-05-10 Matsushita Electric Industrial Co., Ltd. ステレオ符号化装置およびステレオ信号予測方法
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KR101393298B1 (ko) * 2006-07-08 2014-05-12 삼성전자주식회사 적응적 부호화/복호화 방법 및 장치
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JPWO2009087923A1 (ja) * 2008-01-11 2011-05-26 日本電気株式会社 信号分析制御、信号分析、信号制御のシステム、装置、方法及びプログラム
EP2261894A4 (en) * 2008-03-14 2013-01-16 Nec Corp SIGNAL ANALYSIS / CONTROL SYSTEM AND METHOD, SIGNAL CONTROL DEVICE AND METHOD, AND PROGRAM
WO2009131066A1 (ja) * 2008-04-21 2009-10-29 日本電気株式会社 信号分析制御及び信号制御のシステム、装置、方法及びプログラム
JP5141542B2 (ja) * 2008-12-24 2013-02-13 富士通株式会社 雑音検出装置及び雑音検出方法
TWI426736B (zh) * 2009-07-07 2014-02-11 Issc Technologies Corp 一種無線電語音資料傳輸系統之語音品質改善方法
US8868432B2 (en) * 2010-10-15 2014-10-21 Motorola Mobility Llc Audio signal bandwidth extension in CELP-based speech coder
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KR102856247B1 (ko) * 2015-06-17 2025-09-04 삼성전자주식회사 저연산 포맷 변환을 위한 인터널 채널 처리 방법 및 장치
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Also Published As

Publication number Publication date
WO2006022308A1 (ja) 2006-03-02
JPWO2006022308A1 (ja) 2008-05-08
DE602005016571D1 (de) 2009-10-22
EP1783745A4 (en) 2008-05-21
JP4963962B2 (ja) 2012-06-27
CN101010725A (zh) 2007-08-01
KR20070051864A (ko) 2007-05-18
EP1783745B1 (en) 2009-09-09
ATE442644T1 (de) 2009-09-15
US20070233470A1 (en) 2007-10-04
EP1783745A1 (en) 2007-05-09
US7630396B2 (en) 2009-12-08

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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]