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Convention Paper

A Thin and Flexible Sound Generator Using an Electroactive Elastomer

Authors: Sugimoto, Takehiro; Ono, Kazuho; Ando, Akio; Morita, Yuichi; Hosoda, Kosuke; Ishii, Daisaku

AES Convention 127 · Paper 7848 · October 2009

Abstract

We propose a new sound generator using electroactive elastomer (EAE), which is an elastic and flexible material. Our prototype sound generator is composed of a thin polyurethane elastomer sheet and conducting polymer electrodes. The electrodes are formed on both surfaces of the elastomer sheet and are driven by audio signals with a DC bias voltage. We conducted a transformation analysis of the EAE and found that using of the side-length change is more effective than using the thickness change. An EAE sound generator provides 30 dB higher sound pressure level (SPL) at 1 kHz than one using thickness change. The configuration design and operating conditions suitable for a sound generator are discussed.

Details

Published in
AES Convention 127
AES Convention
127
Paper number
7848
Publication date
October 6, 2009
Session subject
Transducer Modeling and Design
Affiliation
Foster Electric Co., Ltd., Akishima, Tokyo, Japan; NHK Science & Technology Research Laboratories, Setagaya-ku, Tokyo, Japan (See document for exact affiliation information.)
Type
Convention Paper