Cart (Loading....) | Create Account
Close category search window
 

Numerical Study on the Transient Response of a Condenser Microphone

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Ranjbar, A. ; Electr. Eng. Dept., Shahed Univ., Tehran, Iran ; Mehrabani, M.T. ; Pary, F.T.

The vibrating of a condenser microphone diaphragm due to incident pressure causes changes in the capacitance and the energy stored in the volume of the microphone. One of the most important parameters that must be determined very precisely for any microphone is the amount of this displacement due to the executed pressure on the diaphragm i.e., mechanical sensitivity. Thus, in this paper, the generalized equations describing the motion of the diaphragm and the Reynolds equation for compressible gases have been solved in transient mode to determine with precision the mechanical response of the microphone. Unlike the past static and quasi dynamic simulations, the Reynolds equation that is used to calculate the damping and stiffness of the air near the diaphragm is considered in nonlinear form. The numerical frequency response obtained for a condenser microphone has been compared with experimental results that exist in the literature. The numerical results obtained indicate a very good accuracy of the code. The effect of the damping and stiffness coefficient on the frequency range, which is very important in designing a practical microphone, is also studied in detail. Such a dynamic analysis, unlike the past numerical static simulation, gives a deeper view into the reasons of the nonlinearity of this important measuring transducer.

Published in:

Sensors Journal, IEEE  (Volume:12 ,  Issue: 8 )

Date of Publication:

Aug. 2012

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.