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Journal Article

Aluminum-Based Push-Pull Electrostatic MEMS Transducer for Earphones

Authors: Zamir, Aviad; Seiden, Gabriel; Kupershmidt, Haim

Journal of the Audio Engineering Society · Volume 70 · Issue 10 · pp. 894–908 · October 2022

Abstract

With the evolving market of true wireless stereo earphones and improvements in Bluetooth technology, wireless earphones have become a platform for innovation. Performance of such earphones ismeasured based on two main criteria: sound quality,which includes total harmonic distortion, and power consumption. Power consumption efficiency pertaining to such devices is critical in sustaining a good battery life. In this study, the design and fabrication of a novel aluminum-based push-pull electrostatic microelectromechanical systems transducer for earphones are presented. This device is designed to consume two orders of magnitude lower than a common earphone voice coil speaker and has a substantially higher quality of sound. Particularly, the authors elaborate on the underlying theoretical aspects pertaining to the design and on the unique fabrication challenges originating from the microscale nature.

Details

Publication
Journal of the Audio Engineering Society
Volume
70
Issue
10
Pages
894–908
Publication date
October 6, 2022
Affiliation
Synaptics Inc., San Jose, CA; Moriah Scientific Consulting, 76248 Rehovot, ISRAEL (See document for exact affiliation information.)
Type
Journal Article