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WO2007067320A3 - Decodeur audio matriciel de faible complexite - Google Patents

Decodeur audio matriciel de faible complexite Download PDF

Info

Publication number
WO2007067320A3
WO2007067320A3 PCT/US2006/044447 US2006044447W WO2007067320A3 WO 2007067320 A3 WO2007067320 A3 WO 2007067320A3 US 2006044447 W US2006044447 W US 2006044447W WO 2007067320 A3 WO2007067320 A3 WO 2007067320A3
Authority
WO
WIPO (PCT)
Prior art keywords
signals
audio
directional
response
low
Prior art date
Application number
PCT/US2006/044447
Other languages
English (en)
Other versions
WO2007067320A2 (fr
Inventor
Ching-Wei Chen
Christophe Chabanne
Original Assignee
Dolby Lab Licensing Corp
Ching-Wei Chen
Christophe Chabanne
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 Dolby Lab Licensing Corp, Ching-Wei Chen, Christophe Chabanne filed Critical Dolby Lab Licensing Corp
Priority to EP06837740A priority Critical patent/EP1964443B1/fr
Priority to CN2006800519731A priority patent/CN101336563B/zh
Publication of WO2007067320A2 publication Critical patent/WO2007067320A2/fr
Publication of WO2007067320A3 publication Critical patent/WO2007067320A3/fr
Priority to HK09101179.2A priority patent/HK1123663A1/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)

Abstract

Cette invention concerne un dispositif servant à extraire n signaux de sortie audio de m signaux d’entrée audio, où m et n sont des entiers positifs, les n signaux de sortie audio étant extraits à l’aide d’une matrice adaptative ou d’un procédé matriciel sensible à un ou plusieurs signaux de commande, cette matrice ou ce procédé produisant n signaux audio en réponse à m signaux audio, et (b) à extraire une pluralité de signaux de commande dynamiques des m signaux d’entrée audio, lesdits signaux de commande étant extraits à l’aide (i) d’un processeur ou d’un procédé qui produit une pluralité de signaux de dominance directionnelle en réponse aux m signaux d’entrée audio, au moins un signal de dominance directionnelle étant relatif à un premier axe directionnel et au moins un autre signal de dominance directionnelle étant relatif à un second axe directionnel, et (iÊ) d’un processeur ou d’un procédé qui produit les signaux de commande en réponse aux signaux de dominance directionnelle.
PCT/US2006/044447 2005-12-02 2006-11-16 Decodeur audio matriciel de faible complexite WO2007067320A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP06837740A EP1964443B1 (fr) 2005-12-02 2006-11-16 Decodeur audio matriciel de faible complexite
CN2006800519731A CN101336563B (zh) 2005-12-02 2006-11-16 低复杂度的音频矩阵解码器
HK09101179.2A HK1123663A1 (en) 2005-12-02 2009-02-10 Low-complexity audio matrix decoder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74156705P 2005-12-02 2005-12-02
US60/741,567 2005-12-02

Publications (2)

Publication Number Publication Date
WO2007067320A2 WO2007067320A2 (fr) 2007-06-14
WO2007067320A3 true WO2007067320A3 (fr) 2007-11-01

Family

ID=37735788

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/044447 WO2007067320A2 (fr) 2005-12-02 2006-11-16 Decodeur audio matriciel de faible complexite

Country Status (5)

Country Link
EP (1) EP1964443B1 (fr)
CN (1) CN101336563B (fr)
HK (1) HK1123663A1 (fr)
TW (1) TWI420918B (fr)
WO (1) WO2007067320A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI424755B (zh) * 2008-01-11 2014-01-21 Dolby Lab Licensing Corp 矩陣解碼器
CN102104451A (zh) * 2009-12-17 2011-06-22 上海电机学院 多输入多输出系统中多用户收发联合预编码的方法及装置
CN102802112B (zh) * 2011-05-24 2014-08-13 鸿富锦精密工业（深圳）有限公司 具有音频文件格式转换功能的电子装置
CN103620673B (zh) 2011-06-24 2016-04-27 皇家飞利浦有限公司 用于处理已编码多声道音频信号的音频信号处理器和用于音频信号处理器的方法
CN106604199B (zh) * 2016-12-23 2018-09-18 湖南国科微电子股份有限公司 一种数字音频信号的矩阵处理方法及装置
US11095264B2 (en) * 2017-12-20 2021-08-17 Dolby Laboratories Licensing Corporation Configurable modal amplifier system
US10904690B1 (en) * 2019-12-15 2021-01-26 Nuvoton Technology Corporation Energy and phase correlated audio channels mixer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864516A (en) * 1972-03-07 1975-02-04 Tokyo Shibaura Electric Co Four-Channel Stereophonic Sound Reproducing System
US4799260A (en) * 1985-03-07 1989-01-17 Dolby Laboratories Licensing Corporation Variable matrix decoder
EP0630168A1 (fr) * 1993-06-15 1994-12-21 NOKIA TECHNOLOGY GmbH Décodeur prologic Dolby

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5666424A (en) * 1990-06-08 1997-09-09 Harman International Industries, Inc. Six-axis surround sound processor with automatic balancing and calibration
TW247390B (en) * 1994-04-29 1995-05-11 Audio Products Int Corp Apparatus and method for adjusting levels between channels of a sound system
US5912976A (en) * 1996-11-07 1999-06-15 Srs Labs, Inc. Multi-channel audio enhancement system for use in recording and playback and methods for providing same
CN1214690C (zh) * 1997-09-05 2005-08-10 雷克西康公司 5－2－5矩阵编码器和解码器系统
US7254239B2 (en) * 2001-02-09 2007-08-07 Thx Ltd. Sound system and method of sound reproduction
TW569551B (en) * 2001-09-25 2004-01-01 Roger Wallace Dressler Method and apparatus for multichannel logic matrix decoding
US20050070243A1 (en) * 2002-01-17 2005-03-31 Schobben Daniel Willem Elisabeth Multichannel echo canceller system using active audio matrix coefficients
US20050052457A1 (en) * 2003-02-27 2005-03-10 Neil Muncy Apparatus for generating and displaying images for determining the quality of audio reproduction
US7949141B2 (en) * 2003-11-12 2011-05-24 Dolby Laboratories Licensing Corporation Processing audio signals with head related transfer function filters and a reverberator
EP1914722B1 (fr) * 2004-03-01 2009-04-29 Dolby Laboratories Licensing Corporation Décodage audio multicanal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864516A (en) * 1972-03-07 1975-02-04 Tokyo Shibaura Electric Co Four-Channel Stereophonic Sound Reproducing System
US4799260A (en) * 1985-03-07 1989-01-17 Dolby Laboratories Licensing Corporation Variable matrix decoder
EP0630168A1 (fr) * 1993-06-15 1994-12-21 NOKIA TECHNOLOGY GmbH Décodeur prologic Dolby

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DOLBY PRO LOGIC SURROUND DECODER PRINCIPLES OF OPERATION, XP002421954, Retrieved from the Internet <URL:http://web.archive.org/web/19961018090112/www.dolby.com/ht/ds&pl/whtppr.html> [retrieved on 19961018] *

Also Published As

Publication number Publication date
EP1964443A2 (fr) 2008-09-03
EP1964443B1 (fr) 2011-09-21
WO2007067320A2 (fr) 2007-06-14
CN101336563A (zh) 2008-12-31
CN101336563B (zh) 2012-02-15
TW200746872A (en) 2007-12-16
HK1123663A1 (en) 2009-06-19
TWI420918B (zh) 2013-12-21

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