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Convention Paper

Balanced Electrostatic All-Silicon MEMS Speakers

Authors: Schenk, Hermann A. G.; Ehrig, Lutz; Wall, Franziska; Kaiser, Bert; Stolz, Michael; Langa, Sergiu; Schuffenhauer, David; Monsalve Guaracao, Jorge Mario; Melnikov, Anton; Conrad, Holger

AES Convention 149 · Paper 10414 · October 2020

Abstract

MEMS based audio reproduction systems have recently become a vibrant field of research and development. Benchmarks for size, power consumption and cost efficiency are very demanding. Electrostatic MEMS actuators offer a high potential to meet both, commercial and technical targets. Macroscopic electrostatic headsets are among the best that audio markets offer today. Using MEMS technology, power consumption and voltage requirements are reduced to the needs of portable devices. In this contribution we report for the first time a balanced MEMS µSpeaker, using two antagonistic electrostatic forces, improving electromechanical stability and harmonic distortion. The distinction to state-of-the-art MEMS push-pull actuators and the acoustic performance is presented.

Details

Published in
AES Convention 149
AES Convention
149
Paper number
10414
Publication date
October 6, 2020
Session subject
Audio Equipment
Affiliation
Arioso Systems GmbH; Fraunhofer IPMS; Brandenburg University of Technology Cottbus-Senftenberg (See document for exact affiliation information.)
Type
Convention Paper