WO2011069205A1 - Décodeur matriciel amélioré pour son ambiophonique - Google Patents

Décodeur matriciel amélioré pour son ambiophonique Download PDF

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Publication number
WO2011069205A1
WO2011069205A1 PCT/AU2010/001666 AU2010001666W WO2011069205A1 WO 2011069205 A1 WO2011069205 A1 WO 2011069205A1 AU 2010001666 W AU2010001666 W AU 2010001666W WO 2011069205 A1 WO2011069205 A1 WO 2011069205A1
Authority
WO
WIPO (PCT)
Prior art keywords
signals
encoded
channel signals
channel
decoder
Prior art date
Application number
PCT/AU2010/001666
Other languages
English (en)
Inventor
Charlie Van Dongen
Original Assignee
Reality Ip Pty 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
Priority claimed from AU2009906030A external-priority patent/AU2009906030A0/en
Application filed by Reality Ip Pty Ltd filed Critical Reality Ip Pty Ltd
Priority to EP10835305.3A priority Critical patent/EP2510709A4/fr
Priority to US13/379,065 priority patent/US9111528B2/en
Publication of WO2011069205A1 publication Critical patent/WO2011069205A1/fr

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (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)
  • Stereophonic System (AREA)

Abstract

L'invention concerne un décodeur et un procédé de décodage, destinés à être utilisés dans un système de son ambiophonique, dans lequel au moins quatre signaux audio d'entrée représentant un champ sonore original sont codés en deux signaux de canal qui sont décodés en au moins quatre signaux audio de sortie correspondant aux quatre signaux audio d'entrée et ont un rapport d'amplitude et une relation de phase. Le décodeur et le procédé comprennent des moyens destinés à : compenser lesdits signaux codés pour les variations d'intensité sonore perçue par rapport à une fréquence associée aux deux signaux de canal codés, en raison de la non-linéarité de la réponse auditive humaine au moins à certaines fréquences ; produire des signaux d'orientation en réponse à la relation de phase desdits signaux compensés ; décoder lesdits signaux codés pour produire des signaux audio de sortie correspondant aux signaux audio d'entrée par variation au moins du rapport d'amplitude desdits signaux codés contenus dans chacun des signaux de sortie, en réponse auxdits signaux d'orientation.
PCT/AU2010/001666 2009-12-10 2010-12-09 Décodeur matriciel amélioré pour son ambiophonique WO2011069205A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10835305.3A EP2510709A4 (fr) 2009-12-10 2010-12-09 Décodeur matriciel amélioré pour son ambiophonique
US13/379,065 US9111528B2 (en) 2009-12-10 2010-12-09 Matrix decoder for surround sound

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2009906030A AU2009906030A0 (en) 2009-12-10 Improved matrix decoder for surround sound
AU2009906030 2009-12-10

Publications (1)

Publication Number Publication Date
WO2011069205A1 true WO2011069205A1 (fr) 2011-06-16

Family

ID=44145038

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2010/001666 WO2011069205A1 (fr) 2009-12-10 2010-12-09 Décodeur matriciel amélioré pour son ambiophonique

Country Status (3)

Country Link
US (1) US9111528B2 (fr)
EP (1) EP2510709A4 (fr)
WO (1) WO2011069205A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2903301A3 (fr) * 2014-01-29 2015-09-09 The Telos Alliance Amélioration d'au moins un des paramètres, intelligibilité ou volume sonore, d'un programme audio
US11838743B2 (en) 2018-12-07 2023-12-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus, method and computer program for encoding, decoding, scene processing and other procedures related to DirAC based spatial audio coding using diffuse compensation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6038312B2 (ja) * 2012-07-27 2016-12-07 フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン ラウドスピーカ・エンクロージャ・マイクロホンシステム記述を提供する装置及び方法
EP2879131A1 (fr) 2013-11-27 2015-06-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Décodeur, codeur et procédé pour estimation de sons informée des systèmes de codage audio à base d'objets

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5727068A (en) * 1996-03-01 1998-03-10 Cinema Group, Ltd. Matrix decoding method and apparatus
US6198827B1 (en) * 1995-12-26 2001-03-06 Rocktron Corporation 5-2-5 Matrix system
US20030210794A1 (en) * 2002-05-10 2003-11-13 Pioneer Corporation Matrix surround decoding system
US7107211B2 (en) * 1996-07-19 2006-09-12 Harman International Industries, Incorporated 5-2-5 matrix encoder and decoder system
US20070297519A1 (en) * 2004-10-28 2007-12-27 Jeffrey Thompson Audio Spatial Environment Engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932059A (en) * 1988-01-11 1990-06-05 Fosgate Inc. Variable matrix decoder for periphonic reproduction of sound
US7003467B1 (en) * 2000-10-06 2006-02-21 Digital Theater Systems, Inc. Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio
US7502743B2 (en) * 2002-09-04 2009-03-10 Microsoft Corporation Multi-channel audio encoding and decoding with multi-channel transform selection

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6198827B1 (en) * 1995-12-26 2001-03-06 Rocktron Corporation 5-2-5 Matrix system
US5727068A (en) * 1996-03-01 1998-03-10 Cinema Group, Ltd. Matrix decoding method and apparatus
US7107211B2 (en) * 1996-07-19 2006-09-12 Harman International Industries, Incorporated 5-2-5 matrix encoder and decoder system
US20030210794A1 (en) * 2002-05-10 2003-11-13 Pioneer Corporation Matrix surround decoding system
US20070297519A1 (en) * 2004-10-28 2007-12-27 Jeffrey Thompson Audio Spatial Environment Engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2903301A3 (fr) * 2014-01-29 2015-09-09 The Telos Alliance Amélioration d'au moins un des paramètres, intelligibilité ou volume sonore, d'un programme audio
US9344825B2 (en) 2014-01-29 2016-05-17 Tls Corp. At least one of intelligibility or loudness of an audio program
US11838743B2 (en) 2018-12-07 2023-12-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus, method and computer program for encoding, decoding, scene processing and other procedures related to DirAC based spatial audio coding using diffuse compensation
US11856389B2 (en) 2018-12-07 2023-12-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus, method and computer program for encoding, decoding, scene processing and other procedures related to DirAC based spatial audio coding using direct component compensation
US11937075B2 (en) 2018-12-07 2024-03-19 Fraunhofer-Gesellschaft Zur Förderung Der Angewand Forschung E.V Apparatus, method and computer program for encoding, decoding, scene processing and other procedures related to DirAC based spatial audio coding using low-order, mid-order and high-order components generators

Also Published As

Publication number Publication date
EP2510709A1 (fr) 2012-10-17
US20120163607A1 (en) 2012-06-28
EP2510709A4 (fr) 2015-04-08
US9111528B2 (en) 2015-08-18

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