WO2002056635A3 - High fidelity audio signal reproduction system and method of operation - Google Patents

High fidelity audio signal reproduction system and method of operation Download PDF

Info

Publication number
WO2002056635A3
WO2002056635A3 PCT/EP2001/014377 EP0114377W WO02056635A3 WO 2002056635 A3 WO2002056635 A3 WO 2002056635A3 EP 0114377 W EP0114377 W EP 0114377W WO 02056635 A3 WO02056635 A3 WO 02056635A3
Authority
WO
WIPO (PCT)
Prior art keywords
audio signal
reproduction system
high fidelity
signal reproduction
processor
Prior art date
Application number
PCT/EP2001/014377
Other languages
French (fr)
Other versions
WO2002056635A2 (en
Inventor
John Joseph Spicer
Original Assignee
Roke Manor Research
John Joseph Spicer
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 Roke Manor Research, John Joseph Spicer filed Critical Roke Manor Research
Priority to AU2002224920A priority Critical patent/AU2002224920A1/en
Publication of WO2002056635A2 publication Critical patent/WO2002056635A2/en
Publication of WO2002056635A3 publication Critical patent/WO2002056635A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/307—Frequency adjustment, e.g. tone control

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

A high fidelity audio signal reproduction system comprises a hi-fi signal generator (1), arranged to feed audio signals to loudspeakers (4,5), via an audio signal processor (6), and an audio signal receiver (8) which in use is co-located with a listener (7) so as to receive sound from the loud speakers which is similar to sound received by the listener. A sample of the received sound is fed back to the processor and compared with the audio signals produced by the hi-fi signal generator. The processor modifies the audio signals applied to the lound speakers in dependence upon the result of this comparison, so that differences between the signals are minimised.
PCT/EP2001/014377 2001-01-09 2001-12-04 High fidelity audio signal reproduction system and method of operation WO2002056635A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002224920A AU2002224920A1 (en) 2001-01-09 2001-12-04 High fidelity audio signal reproduction system and method of operation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0100444.9 2001-01-09
GB0100444A GB0100444D0 (en) 2001-01-09 2001-01-09 Improvements in or relating to hi-fi audio systems

Publications (2)

Publication Number Publication Date
WO2002056635A2 WO2002056635A2 (en) 2002-07-18
WO2002056635A3 true WO2002056635A3 (en) 2003-05-22

Family

ID=9906429

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/014377 WO2002056635A2 (en) 2001-01-09 2001-12-04 High fidelity audio signal reproduction system and method of operation

Country Status (3)

Country Link
AU (1) AU2002224920A1 (en)
GB (1) GB0100444D0 (en)
WO (1) WO2002056635A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004023841A1 (en) 2002-09-09 2004-03-18 Koninklijke Philips Electronics N.V. Smart speakers
DE60327052D1 (en) 2003-05-06 2009-05-20 Harman Becker Automotive Sys Processing system for stereo audio signals
EP1722360B1 (en) 2005-05-13 2014-03-19 Harman Becker Automotive Systems GmbH Audio enhancement system and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4628530A (en) * 1983-02-23 1986-12-09 U. S. Philips Corporation Automatic equalizing system with DFT and FFT
US5386478A (en) * 1993-09-07 1995-01-31 Harman International Industries, Inc. Sound system remote control with acoustic sensor
US5506910A (en) * 1994-01-13 1996-04-09 Sabine Musical Manufacturing Company, Inc. Automatic equalizer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4628530A (en) * 1983-02-23 1986-12-09 U. S. Philips Corporation Automatic equalizing system with DFT and FFT
US5386478A (en) * 1993-09-07 1995-01-31 Harman International Industries, Inc. Sound system remote control with acoustic sensor
US5506910A (en) * 1994-01-13 1996-04-09 Sabine Musical Manufacturing Company, Inc. Automatic equalizer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NUESSER R ET AL: "Bluetooth-based wireless connectivity in an automotive environment", VTC 2000-FALL. IEEE VTS 52ND. VEHICULAR TECHNOLOGY CONFERENCE. BOSTON, MA, SEPT. 24 - 28, 2000, IEEE VEHICULAR TECHNOLGY CONFERENCE, NEW YORK, NY: IEEE, US, vol. 4 OF 6. CONF. 52, 24 September 2000 (2000-09-24), pages 1935 - 1942, XP002216621, ISBN: 0-7803-6508-9 *

Also Published As

Publication number Publication date
GB0100444D0 (en) 2001-02-21
AU2002224920A1 (en) 2002-07-24
WO2002056635A2 (en) 2002-07-18

Similar Documents

Publication Publication Date Title
HK1056449A1 (en) Movie theatre system for processing audio signal in consumer applications and the associated method
EP1507440B1 (en) Audio controller for seatback loudspeakers
WO2005036921A3 (en) Parametric loudspeaker system for isolated listening
GB0005334D0 (en) A method of improving the audibility of sound from a loudspeaker located close to an ear
DE602005021546D1 (en) Hung
EP0932324A3 (en) Sound reproducing device, earphone device and signal processing device therefor
WO1989000802A1 (en) Extended imaging split mode loudspeaker system
AU6134299A (en) Low-frequency audio enhancement system
AU5578496A (en) Stereo enhancement system
EP1397021A4 (en) Vehicle-mounted stereophonic sound field reproducer/silencer
AU2003290132A1 (en) Audio signal processing
EP0836365A3 (en) System for processing audio surround signal
WO2003039115A3 (en) Device and method for carrying out multichannel acoustic echo cancellation with a variable number of channels
MXPA06000735A (en) An audio stereo processing method, device and system.
CN209897254U (en) Parameter burst sounding system
WO2006052188B1 (en) Surround sound processing arrangement and method
CA2240592A1 (en) Sound system
EP1395081A4 (en) Vehicle-mounted stereophonic sound field reproducer
WO2002056635A3 (en) High fidelity audio signal reproduction system and method of operation
US20070280484A1 (en) Vsr surround sound tube headphone
US20020048378A1 (en) Deep bass sound booster device
EP1692248A1 (en) Method for displacing acid gas constituents inside a natural gas network
JPH07212890A (en) Automatically correcting system for sound field inside vehicle
JP2523366B2 (en) Audio playback method
PL374737A1 (en) Loudspeaker arrangement

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PH PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP