CA2449410C - Systeme sonore et procede de reproduction sonore - Google Patents

Systeme sonore et procede de reproduction sonore Download PDF

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Publication number
CA2449410C
CA2449410C CA2449410A CA2449410A CA2449410C CA 2449410 C CA2449410 C CA 2449410C CA 2449410 A CA2449410 A CA 2449410A CA 2449410 A CA2449410 A CA 2449410A CA 2449410 C CA2449410 C CA 2449410C
Authority
CA
Canada
Prior art keywords
sound
audio signal
channel audio
surround
speaker
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
CA2449410A
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English (en)
Other versions
CA2449410A1 (fr
Inventor
Lawrence R. Fincham
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
THX Ltd
Original Assignee
THX 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 THX Ltd filed Critical THX Ltd
Priority to CA 2827686 priority Critical patent/CA2827686C/fr
Publication of CA2449410A1 publication Critical patent/CA2449410A1/fr
Application granted granted Critical
Publication of CA2449410C publication Critical patent/CA2449410C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

L'invention concerne un système de reproduction sonore comprenant des haut-parleurs gauche et droit placés à proximité l'un de l'autre, et un processeur de sons fournissant des signaux audios à la paire de haut-parleurs. Le processeur sonore dérive, de préférence, un signal d'annulation à partir de la différence entre les canaux gauche et droit. Le signal de différence qui en résulte est mis à l'échelle, retardé (si nécessaire), et modifié spectralement avant de l'ajouter au canal de gauche et, dans une polarité opposée, au canal de droite. La modification spectrale du canal de différence prend la forme d'un relèvement de basse fréquence sur un domaine de fréquence déterminé de façon à restaurer l'équilibre timbral correct après réalisation du processus de différence. Il est possible d'insérer dans le canal de différence des réseaux supplémentaires passe-tout de compensation de phase afin de corriger tout décalage de phase supplémentaire produit par le circuit de modification spectrale. la technique peut être utilisée dans un système de son ambiant ou dans un système sonore de véhicule automobile. Dans un véhicule automobile, les deux haut-parleurs peuvent être disposés ensemble dans une enceinte commune possédant une fente étroite proche de la base du cône des haut-parleurs. Le haut-parleur peut être orienté perpendiculairement par rapport au tableau de bord de telle façon que le son émane de la fente pratiquée dans l'enceinte.
CA2449410A 2001-02-09 2002-02-08 Systeme sonore et procede de reproduction sonore Expired - Lifetime CA2449410C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2827686 CA2827686C (fr) 2001-02-09 2002-02-08 Systeme sonore et procede de reproduction sonore

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US26795201P 2001-02-09 2001-02-09
US60/267,952 2001-02-09
US4170802A 2002-01-08 2002-01-08
US10/041,708 2002-01-08
PCT/US2002/003880 WO2002065815A2 (fr) 2001-02-09 2002-02-08 Systeme sonore et procede de reproduction sonore

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA 2827686 Division CA2827686C (fr) 2001-02-09 2002-02-08 Systeme sonore et procede de reproduction sonore

Publications (2)

Publication Number Publication Date
CA2449410A1 CA2449410A1 (fr) 2002-08-22
CA2449410C true CA2449410C (fr) 2014-11-25

Family

ID=26718436

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2449410A Expired - Lifetime CA2449410C (fr) 2001-02-09 2002-02-08 Systeme sonore et procede de reproduction sonore

Country Status (6)

Country Link
EP (1) EP1360874B1 (fr)
JP (1) JP2004521541A (fr)
AT (1) ATE418255T1 (fr)
CA (1) CA2449410C (fr)
DE (1) DE60230386D1 (fr)
WO (1) WO2002065815A2 (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7894609B2 (en) 2002-07-10 2011-02-22 Trident Microsystems (Far East) Ltd. Stereo signal processing apparatus
CN1486120A (zh) * 2002-09-27 2004-03-31 颜聪裕 5.1声道数码环绕耳机
US7676047B2 (en) 2002-12-03 2010-03-09 Bose Corporation Electroacoustical transducing with low frequency augmenting devices
US8139797B2 (en) 2002-12-03 2012-03-20 Bose Corporation Directional electroacoustical transducing
FR2855803A1 (fr) * 2003-06-03 2004-12-10 Focal Jmlab Procede de restitution de sons audio dans un vehicule automobile, et enceinte acoustique correspondante
CN1857030B (zh) * 2003-09-24 2011-06-15 汤姆森许可公司 用于驱动环绕立体声系统的方法和无线超低音扬声器
US7653203B2 (en) 2004-01-13 2010-01-26 Bose Corporation Vehicle audio system surround modes
CN100396162C (zh) * 2004-07-14 2008-06-18 华南理工大学 三扬声器虚拟5.1通路环绕声的信号处理方法
US7974417B2 (en) * 2005-04-13 2011-07-05 Wontak Kim Multi-channel bass management
JP4418774B2 (ja) * 2005-05-13 2010-02-24 アルパイン株式会社 オーディオ装置およびサラウンド音生成方法
CN101253555B (zh) 2005-09-01 2011-08-24 松下电器产业株式会社 多声道音频信号处理装置及多声道音频信号处理方法
US7688992B2 (en) 2005-09-12 2010-03-30 Richard Aylward Seat electroacoustical transducing
US8483413B2 (en) 2007-05-04 2013-07-09 Bose Corporation System and method for directionally radiating sound
US9100748B2 (en) 2007-05-04 2015-08-04 Bose Corporation System and method for directionally radiating sound
US9560448B2 (en) 2007-05-04 2017-01-31 Bose Corporation System and method for directionally radiating sound
US9264813B2 (en) 2010-03-04 2016-02-16 Logitech, Europe S.A. Virtual surround for loudspeakers with increased constant directivity
US8542854B2 (en) 2010-03-04 2013-09-24 Logitech Europe, S.A. Virtual surround for loudspeakers with increased constant directivity
JP5472258B2 (ja) 2011-10-26 2014-04-16 ヤマハ株式会社 音声信号処理装置
DE102013006068B4 (de) * 2013-04-08 2018-12-13 Volkswagen Aktiengesellschaft "Fahrzeug mit Audiosystem"
JP5786981B2 (ja) * 2014-02-06 2015-09-30 ヤマハ株式会社 音声信号処理装置
US9736610B2 (en) 2015-08-21 2017-08-15 Sonos, Inc. Manipulation of playback device response using signal processing
US9949057B2 (en) * 2015-09-08 2018-04-17 Apple Inc. Stereo and filter control for multi-speaker device
US10966041B2 (en) 2018-10-12 2021-03-30 Gilberto Torres Ayala Audio triangular system based on the structure of the stereophonic panning
US11751001B2 (en) * 2020-03-13 2023-09-05 Mitsubishi Electric Corporation Audio system for elevator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4308423A (en) * 1980-03-12 1981-12-29 Cohen Joel M Stereo image separation and perimeter enhancement
US5043970A (en) * 1988-01-06 1991-08-27 Lucasarts Entertainment Company Sound system with source material and surround timbre response correction, specified front and surround loudspeaker directionality, and multi-loudspeaker surround
US5199075A (en) * 1991-11-14 1993-03-30 Fosgate James W Surround sound loudspeakers and processor
JP3790042B2 (ja) * 1998-05-01 2006-06-28 アルパイン株式会社 車室内の音像定位装置

Also Published As

Publication number Publication date
DE60230386D1 (de) 2009-01-29
CA2449410A1 (fr) 2002-08-22
EP1360874A2 (fr) 2003-11-12
JP2004521541A (ja) 2004-07-15
WO2002065815A2 (fr) 2002-08-22
WO2002065815A3 (fr) 2003-08-07
EP1360874B1 (fr) 2008-12-17
ATE418255T1 (de) 2009-01-15

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Effective date: 20220208