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Convention Paper

High-Performance Wideband Ultrasonic 'Sell'-Transducer

Authors: Gorelik, Vladimir; Peissig, Juergen; Wiggers, Rainer

AES Convention 116 · Paper 6163 · May 2004

Abstract

High-Performance wideband Ultrasonic 'Sell'-Transducer

Jürgen Peissig, Vladimir Gorelik, Rainer Wiggers, Sennheiser electronic, Wedemark

The ultrasonic (US) transducer based on Sell's principle is well known to work invertible as microphone and speaker with a broad-band frequency response. US transducers are used for movement and distance sensors, flow-meters and in parametric transducers where it is important to have a high US sound level in air and good directivity. Driven by these applications we developed several versions of Sell transducers with optimised backplate structures for high sound pressure levels, minimum loss due to the membrane suspension, optimal drive of the membrane surface and high directivity. Different membrane materials und vent openings result in different frequency responses. The transducer design, its acoustical performance and the applications will be discussed.

Details

Published in
AES Convention 116
AES Convention
116
Paper number
6163
Publication date
May 6, 2004
Session subject
Instrumentation and Measurement
Affiliation
Sennheiser electronic, Wedemark, Germany (See document for exact affiliation information.)
Type
Convention Paper