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GB2398959A - Digital loudspeaker system - Google Patents

Digital loudspeaker system Download PDF

Info

Publication number
GB2398959A
GB2398959A GB0414900A GB0414900A GB2398959A GB 2398959 A GB2398959 A GB 2398959A GB 0414900 A GB0414900 A GB 0414900A GB 0414900 A GB0414900 A GB 0414900A GB 2398959 A GB2398959 A GB 2398959A
Authority
GB
United Kingdom
Prior art keywords
loudspeaker system
sound
transducers
channel
digital audio
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.)
Withdrawn
Application number
GB0414900A
Other versions
GB0414900D0 (en
Inventor
Paul Thomas Troughton
Anthony Hooley
Angus Gavin Goudie
Mark George Easton
Irving Alexander Bienek
James Davies
Damon Thomas Ryan
Paul Raymond Windle
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.)
1 Ltd
Original Assignee
1 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 1 Ltd filed Critical 1 Ltd
Publication of GB0414900D0 publication Critical patent/GB0414900D0/en
Publication of GB2398959A publication Critical patent/GB2398959A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/005—Details of transducers, loudspeakers or microphones using digitally weighted transducing elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2203/00—Details of circuits for transducers, loudspeakers or microphones covered by H04R3/00 but not provided for in any of its subgroups
    • H04R2203/12—Beamforming aspects for stereophonic sound reproduction with loudspeaker arrays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
    • H04R2205/022—Plurality of transducers corresponding to a plurality of sound channels in each earpiece of headphones or in a single enclosure

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

A loudspeaker system is described for multi-channel digital audio inputs having a digital signal processing system with one or more internal system clocks, driving an array of more than five acoustic output-transducers, the whole being capable of producing two or more independently steerable beams of sound, the sound in each beam independently corresponding to the content of one channel only or a combination of two or more of the channels of the digital audio inputs, and linear output drivers to drive the acoustic output transducers.

Description

GB 2398959 A continuation (72) Inventor(s): Paul Thomas Troughton Anthony
Hooley Angus Gavin Goudie Mark George Easton Irving Alexander Bienek James Davies Damon Thomas Ryan Paul Raymond Windle (74) Agent and/or Address for Service: J A Kemp & Co. 14 South Square, Gray's Inn, LONDON, WC1R 5JJ, United Kingdom
GB0414900A 2002-01-08 2003-01-08 Digital loudspeaker system Withdrawn GB2398959A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0200291A GB0200291D0 (en) 2002-01-08 2002-01-08 Digital loudspeaker system
PCT/GB2003/000040 WO2003059005A2 (en) 2002-01-08 2003-01-08 Digital loudspeaker system

Publications (2)

Publication Number Publication Date
GB0414900D0 GB0414900D0 (en) 2004-08-04
GB2398959A true GB2398959A (en) 2004-09-01

Family

ID=9928726

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0200291A Ceased GB0200291D0 (en) 2001-03-27 2002-01-08 Digital loudspeaker system
GB0414900A Withdrawn GB2398959A (en) 2002-01-08 2003-01-08 Digital loudspeaker system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0200291A Ceased GB0200291D0 (en) 2001-03-27 2002-01-08 Digital loudspeaker system

Country Status (3)

Country Link
AU (1) AU2003201640A1 (en)
GB (2) GB0200291D0 (en)
WO (1) WO2003059005A2 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7577260B1 (en) 1999-09-29 2009-08-18 Cambridge Mechatronics Limited Method and apparatus to direct sound
GB2376595B (en) 2001-03-27 2003-12-24 1 Ltd Method and apparatus to create a sound field
GB2393601B (en) * 2002-07-19 2005-09-21 1 Ltd Digital loudspeaker system
JP4567049B2 (en) * 2004-03-11 2010-10-20 ピーエスエス・ベルギー・エヌブイ Method for processing audio signal, delay management unit, system, unit, computer program, and memory medium
JP2006340057A (en) * 2005-06-02 2006-12-14 Yamaha Corp Array speaker system
SG171693A1 (en) 2006-05-22 2011-06-29 Audio Pixels Ltd Volume and tone control in direct digital speakers
ES2388392T3 (en) 2006-05-22 2012-10-15 Audio Pixels Ltd. Direct digital speaker device that has a desired directivity pattern
US8457338B2 (en) 2006-05-22 2013-06-04 Audio Pixels Ltd. Apparatus and methods for generating pressure waves
KR101411183B1 (en) 2007-05-21 2014-06-23 오디오 픽셀즈 리미티드 Direct digital speaker apparatus having a desired directivity pattern
CN101953174B (en) 2007-11-21 2014-12-10 奥迪欧彼塞尔斯有限公司 Digital speaker apparatus
ES2913077T3 (en) 2010-03-11 2022-05-31 Audio Pixels Ltd Parallel plate electrostatic actuators whose moving elements are driven solely by electrostatic force and useful procedures in conjunction with them
US9425708B2 (en) 2010-11-26 2016-08-23 Audio Pixels Ltd. Apparatus and methods for individual addressing and noise reduction in actuator arrays
US9880533B2 (en) 2012-05-25 2018-01-30 Audio Pixels Ltd. System, a method and a computer program product for controlling a group of actuator arrays for producing a physical effect
US10007244B2 (en) 2012-05-25 2018-06-26 Audio Pixels Ltd. System, a method and a computer program product for controlling a set of actuator elements
WO2014210530A1 (en) * 2013-06-28 2014-12-31 Kopin Corporation Digital voice processing method and system for headset computer
US10520601B2 (en) 2015-04-15 2019-12-31 Audio Pixels Ltd. Methods and systems for detecting at least the position of an object in space
CN116320901B (en) * 2023-05-15 2023-08-29 之江实验室 Sound field control system and method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4769848A (en) * 1980-05-05 1988-09-06 Howard Krausse Electroacoustic network
WO2001023104A2 (en) * 1999-09-29 2001-04-05 1...Limited Method and apparatus to direct sound using an array of output transducers
EP1122973A2 (en) * 1995-03-31 2001-08-08 1...Ipr Limited Digital pulse-width-modulation generator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4769848A (en) * 1980-05-05 1988-09-06 Howard Krausse Electroacoustic network
EP1122973A2 (en) * 1995-03-31 2001-08-08 1...Ipr Limited Digital pulse-width-modulation generator
WO2001023104A2 (en) * 1999-09-29 2001-04-05 1...Limited Method and apparatus to direct sound using an array of output transducers

Also Published As

Publication number Publication date
AU2003201640A1 (en) 2003-07-24
WO2003059005A2 (en) 2003-07-17
GB0200291D0 (en) 2002-02-20
GB0414900D0 (en) 2004-08-04
WO2003059005A3 (en) 2003-12-04
AU2003201640A8 (en) 2003-07-24

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)