DE60230386D1 - SOUND SYSTEM AND METHOD FOR PLAYING TIME - Google Patents

SOUND SYSTEM AND METHOD FOR PLAYING TIME

Info

Publication number
DE60230386D1
DE60230386D1 DE60230386T DE60230386T DE60230386D1 DE 60230386 D1 DE60230386 D1 DE 60230386D1 DE 60230386 T DE60230386 T DE 60230386T DE 60230386 T DE60230386 T DE 60230386T DE 60230386 D1 DE60230386 D1 DE 60230386D1
Authority
DE
Germany
Prior art keywords
sound
speakers
channel
difference
automobile
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
DE60230386T
Other languages
German (de)
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
Application granted granted Critical
Publication of DE60230386D1 publication Critical patent/DE60230386D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

A sound reproduction system comprises a left and right speakers located in close proximity, and a sound processor which provides audio signals to the pair of speakers. The sound processor preferably derives a cancellation signal from the difference between the left and right channels. The resulting difference signal is scaled, delayed (if necessary), and spectrally modified before being added to the left channel and, in opposite polarity, to the right channel. The spectral modification to the difference channel preferably takes the form of a low-frequency boost over a specified frequency range, in order to restore the correct timbral balance after the differencing process. Additional phase-compensating all-pass networks may be inserted in the difference channel to correct for any extra phase shift contributed by the spectral modifying circuit. The technique may be used in a surround sound system or an automobile sound system. In an automobile, the pair of speakers may be placed together in a common enclosure having a narrow slot near the base of the cone of the speakers. The speaker may be oriented perpendicularly with respect to the dashboard such that the sound emanates from the slot in the enclosure.
DE60230386T 2001-02-09 2002-02-08 SOUND SYSTEM AND METHOD FOR PLAYING TIME Expired - Lifetime DE60230386D1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US26795201P 2001-02-09 2001-02-09
US4170802A 2002-01-08 2002-01-08
PCT/US2002/003880 WO2002065815A2 (en) 2001-02-09 2002-02-08 Sound system and method of sound reproduction

Publications (1)

Publication Number Publication Date
DE60230386D1 true DE60230386D1 (en) 2009-01-29

Family

ID=26718436

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60230386T Expired - Lifetime DE60230386D1 (en) 2001-02-09 2002-02-08 SOUND SYSTEM AND METHOD FOR PLAYING TIME

Country Status (6)

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

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 (en) * 2002-09-27 2004-03-31 颜聪裕 5.1 channel digital circulating earphone
US8139797B2 (en) 2002-12-03 2012-03-20 Bose Corporation Directional electroacoustical transducing
US7676047B2 (en) 2002-12-03 2010-03-09 Bose Corporation Electroacoustical transducing with low frequency augmenting devices
FR2855803A1 (en) * 2003-06-03 2004-12-10 Focal Jmlab METHOD FOR RESTORING AUDIO SOUNDS IN A MOTOR VEHICLE, AND CORRESPONDING SOUND SPEAKER
JP4927543B2 (en) * 2003-09-24 2012-05-09 トムソン ライセンシング Surround sound system low frequency effect and surround channel wireless digital transmission
US7653203B2 (en) 2004-01-13 2010-01-26 Bose Corporation Vehicle audio system surround modes
CN100396162C (en) * 2004-07-14 2008-06-18 华南理工大学 Signal processing method for three-loudspeaker virtual 5.1 channel surround sound
US7974417B2 (en) 2005-04-13 2011-07-05 Wontak Kim Multi-channel bass management
JP4418774B2 (en) * 2005-05-13 2010-02-24 アルパイン株式会社 Audio apparatus and surround sound generation method
JP5053849B2 (en) * 2005-09-01 2012-10-24 パナソニック株式会社 Multi-channel acoustic signal processing apparatus and multi-channel acoustic signal processing method
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 (en) 2011-10-26 2014-04-16 ヤマハ株式会社 Audio signal processing device
DE102013006068B4 (en) * 2013-04-08 2018-12-13 Volkswagen Aktiengesellschaft "Vehicle with audio system"
JP5786981B2 (en) * 2014-02-06 2015-09-30 ヤマハ株式会社 Audio signal processing device
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
JP7275374B2 (en) * 2020-03-13 2023-05-17 三菱電機株式会社 Elevator sound system

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 (en) * 1998-05-01 2006-06-28 アルパイン株式会社 Sound image localization device in the passenger compartment

Also Published As

Publication number Publication date
JP2004521541A (en) 2004-07-15
EP1360874A2 (en) 2003-11-12
EP1360874B1 (en) 2008-12-17
ATE418255T1 (en) 2009-01-15
WO2002065815A2 (en) 2002-08-22
CA2449410A1 (en) 2002-08-22
CA2449410C (en) 2014-11-25
WO2002065815A3 (en) 2003-08-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition