EP1248492A3 - Ultrasonic parametric multiway speaker system - Google Patents

Ultrasonic parametric multiway speaker system Download PDF

Info

Publication number
EP1248492A3
EP1248492A3 EP02007546A EP02007546A EP1248492A3 EP 1248492 A3 EP1248492 A3 EP 1248492A3 EP 02007546 A EP02007546 A EP 02007546A EP 02007546 A EP02007546 A EP 02007546A EP 1248492 A3 EP1248492 A3 EP 1248492A3
Authority
EP
European Patent Office
Prior art keywords
speaker system
paths
frequencies
modulators
ultrasonic parametric
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.)
Granted
Application number
EP02007546A
Other languages
German (de)
French (fr)
Other versions
EP1248492A2 (en
EP1248492B1 (en
Inventor
Guido Kolano
Klaus Dr. Linhard
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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 DE10117528A external-priority patent/DE10117528B4/en
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1248492A2 publication Critical patent/EP1248492A2/en
Publication of EP1248492A3 publication Critical patent/EP1248492A3/en
Application granted granted Critical
Publication of EP1248492B1 publication Critical patent/EP1248492B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/10—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2217/00—Details of magnetostrictive, piezoelectric, or electrostrictive transducers covered by H04R15/00 or H04R17/00 but not provided for in any of their subgroups
    • H04R2217/03—Parametric transducers where sound is generated or captured by the acoustic demodulation of amplitude modulated ultrasonic waves

Abstract

A frequency splitter separates an audio signal (50) into several paths viz. deep frequencies (51), medium frequencies (52) and high frequencies (53). Signals from each of these paths are fed to corresponding FM modulators (61-63) or to amplifier stages (71-73) and to an allocated modulator. Different modulators with different modulator power characteristics (712,722,732) are used for the individual paths. An Independent claim is also included for a device for triggering/driving a parametric loudspeaker system.
EP02007546A 2001-04-07 2002-04-03 Ultrasonic parametric multiway speaker system Expired - Lifetime EP1248492B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10117528 2001-04-07
DE10117528A DE10117528B4 (en) 2001-04-07 2001-04-07 Ultrasonic based parametric multi-way speaker system

Publications (3)

Publication Number Publication Date
EP1248492A2 EP1248492A2 (en) 2002-10-09
EP1248492A3 true EP1248492A3 (en) 2004-01-07
EP1248492B1 EP1248492B1 (en) 2006-05-31

Family

ID=7680858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02007546A Expired - Lifetime EP1248492B1 (en) 2001-04-07 2002-04-03 Ultrasonic parametric multiway speaker system

Country Status (5)

Country Link
US (2) US20020146138A1 (en)
EP (1) EP1248492B1 (en)
JP (1) JP2002354575A (en)
AT (1) ATE328456T1 (en)
DE (2) DE10117529B4 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG115665A1 (en) * 2004-04-06 2005-10-28 Sony Corp Method and apparatus to generate an audio beam with high quality
WO2008050278A1 (en) * 2006-10-23 2008-05-02 Koninklijke Philips Electronics, N.V. Symmetric and preferentially steered random arrays for ultrasound therapy
DE202009017930U1 (en) 2008-03-11 2010-10-07 Merkel, Tobias, Dr. Virtual microphone with externally modulated ultrasound
JP5444670B2 (en) * 2008-09-18 2014-03-19 パナソニック株式会社 Sound playback device
EP2612508B1 (en) * 2010-09-03 2017-03-08 Actiwave AB A speaker system which comprises speaker driver groups
JP2012153303A (en) * 2011-01-27 2012-08-16 Denso Corp Vehicle approach warning apparatus
EP2897379A4 (en) * 2012-09-14 2016-04-27 Nec Corp Speaker device and electronic equipment
JP2015159404A (en) * 2014-02-24 2015-09-03 パイオニア株式会社 parametric speaker and parametric speaker system
US10134416B2 (en) * 2015-05-11 2018-11-20 Microsoft Technology Licensing, Llc Privacy-preserving energy-efficient speakers for personal sound
JP6424341B2 (en) * 2016-07-21 2018-11-21 パナソニックＩｐマネジメント株式会社 Sound reproduction apparatus and sound reproduction system
JP2019041409A (en) * 2018-11-13 2019-03-14 パイオニア株式会社 Parametric speaker
JP7021296B2 (en) * 2020-06-23 2022-02-16 パイオニア株式会社 Parametric speaker

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02265400A (en) * 1989-04-05 1990-10-30 Matsushita Electric Works Ltd Loudspeaker
WO2001008449A1 (en) * 1999-04-30 2001-02-01 Sennheiser Electronic Gmbh & Co. Kg Method for the reproduction of sound waves using ultrasound loudspeakers
WO2001023104A2 (en) * 1999-09-29 2001-04-05 1...Limited Method and apparatus to direct sound using an array of output transducers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1951669A (en) * 1931-07-17 1934-03-20 Ramsey George Method and apparatus for producing sound
DE3590430T1 (en) * 1984-08-28 1986-09-18 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Loudspeaker system with a pronounced directional effect
US6011855A (en) * 1997-03-17 2000-01-04 American Technology Corporation Piezoelectric film sonic emitter
JP4221792B2 (en) * 1998-01-09 2009-02-12 ソニー株式会社 Speaker device and audio signal transmitting device
DE10117528B4 (en) * 2001-04-07 2004-04-01 Daimlerchrysler Ag Ultrasonic based parametric multi-way speaker system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02265400A (en) * 1989-04-05 1990-10-30 Matsushita Electric Works Ltd Loudspeaker
WO2001008449A1 (en) * 1999-04-30 2001-02-01 Sennheiser Electronic Gmbh & Co. Kg Method for the reproduction of sound waves using ultrasound loudspeakers
WO2001023104A2 (en) * 1999-09-29 2001-04-05 1...Limited Method and apparatus to direct sound using an array of output transducers

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 018 (E - 1023) 16 January 1991 (1991-01-16) *
YONEYAMA M ET AL: "THE AUDIO SPOTLIGHT: AN APPLICATION OF NONLINEAR INTERACTION OF SOUND WAVES TO A NEW TYPE OF LOUDSPEAKER DESIGN", JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 73, no. 5, May 1983 (1983-05-01), pages 1532 - 1536, XP000762272, ISSN: 0001-4966 *

Also Published As

Publication number Publication date
EP1248492A2 (en) 2002-10-09
JP2002354575A (en) 2002-12-06
ATE328456T1 (en) 2006-06-15
DE50206959D1 (en) 2006-07-06
EP1248492B1 (en) 2006-05-31
US20020146138A1 (en) 2002-10-10
DE10117529B4 (en) 2005-04-28
US20060093154A1 (en) 2006-05-04
DE10117529A1 (en) 2002-11-07

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