AU2001277864A1 - Power amplification for parametric loudspeakers - Google Patents

Power amplification for parametric loudspeakers

Info

Publication number
AU2001277864A1
AU2001277864A1 AU2001277864A AU7786401A AU2001277864A1 AU 2001277864 A1 AU2001277864 A1 AU 2001277864A1 AU 2001277864 A AU2001277864 A AU 2001277864A AU 7786401 A AU7786401 A AU 7786401A AU 2001277864 A1 AU2001277864 A1 AU 2001277864A1
Authority
AU
Australia
Prior art keywords
amplifier
power amplification
power amplifier
parametric loudspeakers
loudspeaker system
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.)
Abandoned
Application number
AU2001277864A
Inventor
Jeevan G. Bank
James J. Croft Iii
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.)
Genasys Inc
Original Assignee
American Technology Corp
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 American Technology Corp filed Critical American Technology Corp
Publication of AU2001277864A1 publication Critical patent/AU2001277864A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Amplifiers (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Optical Communication System (AREA)

Abstract

A power amplifier (figure 1) for a parametric loudspeaker system which utilizes switch-mode power conversion (110) to increase efficiency. The power amplifier is configured to coordinate the switching frequency of the amplifier with the carrier frequency of the parametric loudspeaker system, so a lower switching frequency may be used even though the power amplifier must amplify ultrasonic signals. The amplifier can be further optimised to counteract the reactance of the transducer load (118) at the carrier frequency.
AU2001277864A 2000-07-11 2001-07-11 Power amplification for parametric loudspeakers Abandoned AU2001277864A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US21737300P 2000-07-11 2000-07-11
US60217373 2000-07-11
PCT/US2001/021749 WO2002005588A2 (en) 2000-07-11 2001-07-11 Power amplification for parametric loudspeakers

Publications (1)

Publication Number Publication Date
AU2001277864A1 true AU2001277864A1 (en) 2002-01-21

Family

ID=22810798

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001277864A Abandoned AU2001277864A1 (en) 2000-07-11 2001-07-11 Power amplification for parametric loudspeakers

Country Status (8)

Country Link
EP (1) EP1320927B1 (en)
JP (1) JP2004515091A (en)
CN (1) CN100336299C (en)
AT (1) ATE408269T1 (en)
AU (1) AU2001277864A1 (en)
CA (1) CA2414491A1 (en)
DE (1) DE60135762D1 (en)
WO (1) WO2002005588A2 (en)

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WO2007001035A1 (en) * 2005-06-28 2007-01-04 Anodic Supply Co., Ltd. Ultrasonic speaker system
JP4793174B2 (en) * 2005-11-25 2011-10-12 セイコーエプソン株式会社 Electrostatic transducer, circuit constant setting method
JP4867565B2 (en) * 2005-11-29 2012-02-01 セイコーエプソン株式会社 Capacitive load drive circuit and ultrasonic speaker
JP2008079253A (en) * 2006-09-25 2008-04-03 Patoraito:Kk Siren device for emergency vehicle and siren system for emergency vehicle
US8995691B2 (en) 2008-07-14 2015-03-31 Audera Acoustics Inc. Audio amplifier
US8269475B2 (en) 2009-02-17 2012-09-18 Texas Instruments Incorporated Class DH amplifier
US8194869B2 (en) 2010-03-17 2012-06-05 Harman International Industries, Incorporated Audio power management system
CN103828391B (en) * 2011-09-22 2016-07-13 松下知识产权经营株式会社 Sound reproducing device
US10148200B2 (en) * 2016-08-06 2018-12-04 Shawn David Coleman, JR. Device and method for electrical energy synthesis
JP7060025B2 (en) 2017-11-30 2022-04-26 信越化学工業株式会社 Organosilicon-modified organosilicon resin, its manufacturing method, and cosmetics
JP6994438B2 (en) 2018-07-11 2022-01-14 信越化学工業株式会社 Cross-linked organosilicon resin, its manufacturing method, and cosmetics
CN113316071B (en) * 2020-02-27 2023-03-03 京东方科技集团股份有限公司 Electronic device and control method thereof
US11998948B2 (en) * 2020-07-06 2024-06-04 Cirrus Logic Inc. Driver circuitry for piezoelectric transducers
JP7503028B2 (en) 2021-07-09 2024-06-19 信越化学工業株式会社 Crosslinked organosilicon resin, its manufacturing method, and cosmetic

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JPS6124323A (en) * 1984-07-13 1986-02-03 Nec Home Electronics Ltd Converting circuit of unipolar-bipolar pwm signal
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JPH0224987A (en) * 1988-07-12 1990-01-26 Mitsubishi Electric Corp Inverter device for induction heating coil
JP2647714B2 (en) * 1989-04-28 1997-08-27 オリンパス光学工業株式会社 Ultrasonic transducer drive
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JP3130919B2 (en) * 1990-11-06 2001-01-31 三菱電機株式会社 Pulse width modulation amplifier
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CN1191674C (en) * 1996-12-11 2005-03-02 Gn奈康有限公司 Class D amplifier
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Also Published As

Publication number Publication date
CN1476667A (en) 2004-02-18
WO2002005588A3 (en) 2002-06-13
WO2002005588A2 (en) 2002-01-17
EP1320927A2 (en) 2003-06-25
JP2004515091A (en) 2004-05-20
CA2414491A1 (en) 2002-01-17
DE60135762D1 (en) 2008-10-23
ATE408269T1 (en) 2008-09-15
EP1320927B1 (en) 2008-09-10
CN100336299C (en) 2007-09-05
EP1320927A4 (en) 2006-07-12

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