• DocumentCode
    644134
  • Title

    New direct-radiator loudspeaker driven by piezoelectric ultrasonic motors

  • Author

    Saito, Hiroshi ; Oishi, Kazuaki ; Negishi, Hirokazu ; Ohga, Juro ; Oohira, Ikuo ; Maeda, Kumiko

  • Author_Institution
    Tokyo Univ. of Technol., Tokyo, Japan
  • fYear
    2013
  • fDate
    1-4 Oct. 2013
  • Firstpage
    200
  • Lastpage
    203
  • Abstract
    Completely new direct-radiator loudspeaker constructions as alternative of the conventional electrodynamic loudspeakers by using piezoelectric ultrasonic motors are introduced. The authors examined two sorts of constructions. One is actuated by continuous revolution of piezoelectric ultrasonic motors. The other is driven by linear ultrasonic actuators. They are useful for radiation of rather low frequency signal because it shows almost flat phase frequency characteristics in low frequency region.
  • Keywords
    loudspeakers; ultrasonic motors; direct-radiator loudspeaker driven; electrodynamic loudspeakers; linear ultrasonic actuators; low frequency signal; piezoelectric ultrasonic motors; Acoustics; Actuators; Frequency measurement; Integrated circuit modeling; Loudspeakers; Permanent magnet motors; Stators; cone radiator; linear actuator; revolution; woofer;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Consumer Electronics (GCCE), 2013 IEEE 2nd Global Conference on
  • Conference_Location
    Tokyo
  • Print_ISBN
    978-1-4799-0890-5
  • Type

    conf

  • DOI
    10.1109/GCCE.2013.6664798
  • Filename
    6664798