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Convention Paper

More Advanced Models for Silicon Condenser Microphones

Authors: Maisano, Joseph

AES Convention 92 · Paper 3251 · March 1992

Abstract

The increase in sensitivity of silicon condenser microphones (smaller than 30mm3 for hearing aid applications), led to more advanced models for the transducer acoustic microstructures and an electrostatic coupling model which considers the diaphragm deflection. The global optimization of the microphone, and a SPICE simulation, gave a sensitivity greater than 10mV/Pa, a thermal noise of 23 dB(A) with a bandwidth of 8 kHz.

Details

Published in
AES Convention 92
AES Convention
92
Paper number
3251
Publication date
March 6, 1992
Session subject
Transducers
Affiliation
Departement d'electricite, EPFL, Lausanne, Switzerland (See document for exact affiliation information.)
Type
Convention Paper