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MX2007005262A - Codificacion y decodificacion de senales de audio de varios canales. - Google Patents

Codificacion y decodificacion de senales de audio de varios canales.

Info

Publication number
MX2007005262A
MX2007005262A MX2007005262A MX2007005262A MX2007005262A MX 2007005262 A MX2007005262 A MX 2007005262A MX 2007005262 A MX2007005262 A MX 2007005262A MX 2007005262 A MX2007005262 A MX 2007005262A MX 2007005262 A MX2007005262 A MX 2007005262A
Authority
MX
Mexico
Prior art keywords
signal
converting
audio channels
encoding
decoding
Prior art date
Application number
MX2007005262A
Other languages
English (en)
Inventor
Gerard H Hotho
Dirk J Breebaart
Francois P Myburg
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of MX2007005262A publication Critical patent/MX2007005262A/es

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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • 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
    • G10L21/0272—Voice signal separating
    • G10L21/028—Voice signal separating using properties of sound source

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Mathematical Physics (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)

Abstract

Se describe un dispositivo de codificacion (1) para convertir un primer numero (M) de canales de audio de entrada en un segundo numero mas pequeno (N) de canales de audio de salida que comprende al menos una unidad de conversacion (12) para convertir una primera senal (Lf; Rf; Co) y una segunda senal (Lr; Rr; Le) en una tercera senal (L; R; C) y una cuarta senal (Ls; Rs; Cs). La tercera senal dominante contiene la mayoria de la energia de senal de las primera y segunda senales, mientras que la cuarta senal residual contiene el resto de la energia de senal. El dispositivo de codificacion esta dispuesto para usar la tercera senal (L; R; C) para producir una senal de salida y para emitir la cuarta senal (Ls; Rs; Cs). Se describe tambien un dispositivo de decodificacion (2) para convertir un primer numero (N) de canales de audio de entrada en un segundo numero mas grande (M) de canales de audio de salida que comprende al menos una unidad de conversion (24) para convertir una primera senal (L; R; C) y una segunda senal (Ld; Rd; Ld) en una tercera senal (Lf; Rf; Co) y una cuarta senal (Lr, Rr; Le). La primera senal dominante contiene la mayoria de la energia de senal de las tercera y cuarta senales, mientras que la segunda senal residual contiene el resto de la energia de senal. El dispositivo de decodificacion esta dispuesto para recibir al menos una segunda senal (Ld; Rd; Cd).
MX2007005262A 2004-11-04 2005-10-31 Codificacion y decodificacion de senales de audio de varios canales. MX2007005262A (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP04105527 2004-11-04
EP05103079 2005-04-18
EP05103443 2005-04-27
PCT/IB2005/053550 WO2006048817A1 (en) 2004-11-04 2005-10-31 Encoding and decoding of multi-channel audio signals

Publications (1)

Publication Number Publication Date
MX2007005262A true MX2007005262A (es) 2007-07-09

Family

ID=35478388

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2007005262A MX2007005262A (es) 2004-11-04 2005-10-31 Codificacion y decodificacion de senales de audio de varios canales.

Country Status (9)

Country Link
US (1) US7809580B2 (es)
EP (1) EP1810279B1 (es)
JP (1) JP5238256B2 (es)
KR (1) KR101183859B1 (es)
CN (1) CN101053017B (es)
BR (1) BRPI0517987B1 (es)
MX (1) MX2007005262A (es)
RU (1) RU2407068C2 (es)
WO (1) WO2006048817A1 (es)

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KR101428487B1 (ko) * 2008-07-11 2014-08-08 삼성전자주식회사 멀티 채널 부호화 및 복호화 방법 및 장치
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FR2954640B1 (fr) * 2009-12-23 2012-01-20 Arkamys Procede d'optimisation de la reception stereo pour radio analogique et recepteur de radio analogique associe
WO2012169808A2 (ko) * 2011-06-07 2012-12-13 삼성전자 주식회사 오디오 신호 처리방법, 오디오 부호화장치, 오디오 복호화장치, 및 이를 채용하는 단말기
JP5737077B2 (ja) 2011-08-30 2015-06-17 富士通株式会社 オーディオ符号化装置、オーディオ符号化方法及びオーディオ符号化用コンピュータプログラム
US9098576B1 (en) 2011-10-17 2015-08-04 Google Inc. Ensemble interest point detection for audio matching
US8831763B1 (en) 2011-10-18 2014-09-09 Google Inc. Intelligent interest point pruning for audio matching
US8805560B1 (en) 2011-10-18 2014-08-12 Google Inc. Noise based interest point density pruning
US8886543B1 (en) 2011-11-15 2014-11-11 Google Inc. Frequency ratio fingerprint characterization for audio matching
JP5998467B2 (ja) * 2011-12-14 2016-09-28 富士通株式会社 復号装置、復号方法、及び復号プログラム
US9268845B1 (en) 2012-03-08 2016-02-23 Google Inc. Audio matching using time alignment, frequency alignment, and interest point overlap to filter false positives
US9471673B1 (en) 2012-03-12 2016-10-18 Google Inc. Audio matching using time-frequency onsets
US9087124B1 (en) 2012-03-26 2015-07-21 Google Inc. Adaptive weighting of popular reference content in audio matching
US9148738B1 (en) 2012-03-30 2015-09-29 Google Inc. Using local gradients for pitch resistant audio matching
JP5949270B2 (ja) 2012-07-24 2016-07-06 富士通株式会社 オーディオ復号装置、オーディオ復号方法、オーディオ復号用コンピュータプログラム
SG11201602628TA (en) * 2013-10-21 2016-05-30 Dolby Int Ab Decorrelator structure for parametric reconstruction of audio signals
KR101453733B1 (ko) 2014-04-07 2014-10-22 삼성전자주식회사 오디오 신호 처리장치
CN105632505B (zh) * 2014-11-28 2019-12-20 北京天籁传音数字技术有限公司 主成分分析pca映射模型的编解码方法及装置
EP3246923A1 (en) 2016-05-20 2017-11-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for processing a multichannel audio signal
US10839814B2 (en) * 2017-10-05 2020-11-17 Qualcomm Incorporated Encoding or decoding of audio signals
US10580420B2 (en) * 2017-10-05 2020-03-03 Qualcomm Incorporated Encoding or decoding of audio signals
US10535357B2 (en) * 2017-10-05 2020-01-14 Qualcomm Incorporated Encoding or decoding of audio signals
CN114708874A (zh) * 2018-05-31 2022-07-05 华为技术有限公司 立体声信号的编码方法和装置
CN110556116B (zh) 2018-05-31 2021-10-22 华为技术有限公司 计算下混信号和残差信号的方法和装置
WO2021232376A1 (zh) 2020-05-21 2021-11-25 华为技术有限公司 一种音频数据传输方法及相关装置

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Also Published As

Publication number Publication date
RU2407068C2 (ru) 2010-12-20
CN101053017A (zh) 2007-10-10
CN101053017B (zh) 2012-10-10
EP1810279B1 (en) 2013-12-11
BRPI0517987B1 (pt) 2021-04-27
JP5238256B2 (ja) 2013-07-17
RU2007120528A (ru) 2008-12-10
BRPI0517987A8 (pt) 2018-07-31
US20090055194A1 (en) 2009-02-26
US7809580B2 (en) 2010-10-05
JP2008519307A (ja) 2008-06-05
BRPI0517987A (pt) 2008-10-21
KR20070085721A (ko) 2007-08-27
WO2006048817A1 (en) 2006-05-11
EP1810279A1 (en) 2007-07-25
KR101183859B1 (ko) 2012-09-19

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