EP1248491A3 - Ultrasonic parametric speaker system - Google Patents

Ultrasonic parametric speaker system Download PDF

Info

Publication number
EP1248491A3
EP1248491A3 EP02007545A EP02007545A EP1248491A3 EP 1248491 A3 EP1248491 A3 EP 1248491A3 EP 02007545 A EP02007545 A EP 02007545A EP 02007545 A EP02007545 A EP 02007545A EP 1248491 A3 EP1248491 A3 EP 1248491A3
Authority
EP
European Patent Office
Prior art keywords
speaker system
modulator
parametric speaker
ultrasonic
frequency
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
EP02007545A
Other languages
German (de)
French (fr)
Other versions
EP1248491B1 (en
EP1248491A2 (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 DE10117529A external-priority patent/DE10117529B4/en
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1248491A2 publication Critical patent/EP1248491A2/en
Publication of EP1248491A3 publication Critical patent/EP1248491A3/en
Application granted granted Critical
Publication of EP1248491B1 publication Critical patent/EP1248491B1/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

An AM modulator (20) places an original audio signal (10) in a frequency range right (11) and left (12) alongside a carrier frequency. An ultrasonic modulator has a transmission function (30) with a maximum transmission at a frequency (f0), to which the carrier frequency is tuned. Two sidebands are emitted corresponding to the transmission function of the modulator. An Independent claim is also included for a device for triggering a parametric loudspeaker system.
EP02007545A 2001-04-07 2002-04-03 Ultrasonic parametric speaker system Expired - Lifetime EP1248491B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10117529A DE10117529B4 (en) 2001-04-07 2001-04-07 Ultrasonic based parametric speaker system
DE10117529 2001-04-07

Publications (3)

Publication Number Publication Date
EP1248491A2 EP1248491A2 (en) 2002-10-09
EP1248491A3 true EP1248491A3 (en) 2004-01-07
EP1248491B1 EP1248491B1 (en) 2006-05-31

Family

ID=7680859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02007545A Expired - Lifetime EP1248491B1 (en) 2001-04-07 2002-04-03 Ultrasonic parametric speaker system

Country Status (5)

Country Link
US (1) US7181025B2 (en)
EP (1) EP1248491B1 (en)
JP (1) JP2002315088A (en)
AT (1) ATE328455T1 (en)
DE (2) DE10117528B4 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10117529B4 (en) * 2001-04-07 2005-04-28 Daimler Chrysler Ag Ultrasonic based parametric speaker system
WO2005043771A1 (en) * 2003-10-23 2005-05-12 American Technology Corporation Method of adusting linear parameters of a parametric ultrasonic signal to reduce non-linearities in decoupled audio output waves and system including same
JP4371268B2 (en) 2003-12-18 2009-11-25 シチズンホールディングス株式会社 Directional speaker driving method and directional speaker
JP2008504566A (en) * 2004-06-28 2008-02-14 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Acoustic transmission device, acoustic reception device, frequency range adaptation device, and acoustic signal transmission method
JP4124182B2 (en) * 2004-08-27 2008-07-23 ヤマハ株式会社 Array speaker device
CN1964219B (en) * 2005-11-11 2016-01-20 上海贝尔股份有限公司 Realize the method and apparatus of relaying
JP4783921B2 (en) * 2006-03-13 2011-09-28 三菱電機エンジニアリング株式会社 Super directional speaker
DE202009017930U1 (en) 2008-03-11 2010-10-07 Merkel, Tobias, Dr. Virtual microphone with externally modulated ultrasound
US8976980B2 (en) 2011-03-24 2015-03-10 Texas Instruments Incorporated Modulation of audio signals in a parametric speaker
JP5817182B2 (en) * 2011-03-31 2015-11-18 日本電気株式会社 Speaker device and electronic device
US10757506B2 (en) 2014-08-28 2020-08-25 Nanyang Technological University Amplifier circuit for a parametric transducer and a related audio device
US9780753B2 (en) * 2014-11-05 2017-10-03 Turtle Beach Corporation Adaptive equalization for an ultrasonic audio system
CN107864020B (en) * 2017-11-07 2021-02-19 哈尔滨工程大学 Transform domain extraction method of underwater small target single-component acoustic scattering echo
WO2019212077A1 (en) * 2018-05-04 2019-11-07 주식회사 제이디솔루션 Ultra-directional speaker circuit with enhanced stability

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
US6044160A (en) * 1998-01-13 2000-03-28 American Technology Corporation Resonant tuned, ultrasonic electrostatic emitter
WO2001008449A1 (en) * 1999-04-30 2001-02-01 Sennheiser Electronic Gmbh & Co. Kg Method for the reproduction of sound waves using ultrasound loudspeakers

Family Cites Families (12)

* 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
US2371373A (en) * 1943-06-12 1945-03-13 Rca Corp Balanced frequency modulation system
US3418564A (en) * 1966-04-11 1968-12-24 Varian Associates Field modulated gyromagnetic resonance spectrometer detecting only the fm carrier resonance component
DE3590430T1 (en) * 1984-08-28 1986-09-18 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Loudspeaker system with a pronounced directional effect
DE3929243A1 (en) * 1989-09-02 1991-03-07 Rump Elektronik Tech Shortening fade of ultrasonic pulse transmitter - performing stepless variation of frequency of excitation of piezoelectric transducer beyond resonant frequency for short time
EP0599250B1 (en) * 1992-11-24 2001-10-04 Canon Kabushiki Kaisha Acoustic output device, and electronic apparatus using said device
US5917776A (en) * 1996-12-31 1999-06-29 Honeywell Inc. Means for reducing minimum sensing distance of an ultrasonic proximity sensor
US6011855A (en) * 1997-03-17 2000-01-04 American Technology Corporation Piezoelectric film sonic emitter
US6359990B1 (en) * 1997-04-30 2002-03-19 American Technology Corporation Parametric ring emitter
JP4221792B2 (en) * 1998-01-09 2009-02-12 ソニー株式会社 Speaker device and audio signal transmitting device
US6850623B1 (en) * 1999-10-29 2005-02-01 American Technology Corporation Parametric loudspeaker with improved phase characteristics
DE19931386C2 (en) * 1999-07-07 2003-10-09 Innomar Technologie Gmbh Arrangement for the reception of signals in the case of a parametric transmission for echo sounding of the ground, of sediment layers and of objects on and in the ground as well as for underwater news transmission

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
US6044160A (en) * 1998-01-13 2000-03-28 American Technology Corporation Resonant tuned, ultrasonic electrostatic emitter
WO2001008449A1 (en) * 1999-04-30 2001-02-01 Sennheiser Electronic Gmbh & Co. Kg Method for the reproduction of sound waves using ultrasound loudspeakers

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
JP2002315088A (en) 2002-10-25
EP1248491B1 (en) 2006-05-31
DE50206958D1 (en) 2006-07-06
ATE328455T1 (en) 2006-06-15
EP1248491A2 (en) 2002-10-09
DE10117528B4 (en) 2004-04-01
DE10117528A1 (en) 2003-02-06
US7181025B2 (en) 2007-02-20
US20020172375A1 (en) 2002-11-21

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