Abstract
The theoretical response of a condenser microphone [A. J. Zuckerwar, J. Acoust. Soc. Am. 64, 1278–1285 (1978)] and an electret microphone [R. Zahn, Acoustica 57y, 200–204 (1985)] has been developed based on the mean displacement of a stretched membrane. Recent developments have produced an optical fiber pressure sensor [F. W. Cuomo, R. S. Kidwell, and A. Hu, SPIE 661, 234–239 (1986)], which utilizes a stretched metallized Mylar film with an optical fiber probe acting at its center. This paper derives the theoretical expressions representing the peak displacement at that point. In addition, the effects of damping due to the backchamber are investigated to show the variations in amplitude and frequency response due to the different design approaches. It is shown that equivalent expressions for the peak displacement can be obtained exactly as well as by the lumped elements approach. Comparisons are made between the results previously obtained for a 1‐in.‐diam B&K microphone and the present analysis. [Work su...
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