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Convention Paper

Diaphragm Parameters and Radiation Characteristics of Multilayer Piezoelectric Ceramic Loudspeakers

Authors: Fujii, Jun; Ohga, Juro; Oohira, Ikuo; Sashida, Norikazu

AES Convention 119 · Paper 6574 · October 2005

Abstract

This paper presents diaphragm parameters and analysis of radiation characteristics for small size loudspeaker by a multilayer piezoelectric ceramic bimorph diaphragm. The multilayer ceramic wafer is suitable for buttery operated mobile phones because of its lower electrical impedance nature.
Three diaphragm parameter measuring methods are compared to develop the optimum measurement of diaphragm parameters. Then, output sound pressure frequency characteristics of a loudspeaker model with actual acoustical loads are analyzed.

Details

Published in
AES Convention 119
AES Convention
119
Paper number
6574
Publication date
October 6, 2005
Session subject
Audio Coding & Loudspeakers & Hi Resolution Audio
Affiliation
Asida Sound CO., Ltd.; Shibaura Institute of Technology; Taiyo Yuden Co., Ltd. (See document for exact affiliation information.)
Type
Convention Paper