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
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