DocumentCode
1217348
Title
Antinoise Characteristics of Differential Microphones
Author
Ellithorn, Harold E. ; Wiggins, A.M.
Author_Institution
University of Notre Dame, Notre Dame, Indiana; and Electro-Voice, Inc., South Bend, Indiana
Volume
34
Issue
2
fYear
1946
Abstract
The operation of the differential, microphone is described, and the noise discrimination of differential microphones operating on various orders of pressure gradients is obtained. Equations of the discrimination against random sounds are developed for both theoretical and practical microphones. Curves are drawn, showing discrimination versus frequency. The noise discrimination of the nth-order pressure gradient is obtained as the ultimate in differential-type microphones.
Keywords
Acoustic noise; Acoustic reflection; Communication system control; Equations; Frequency; Insulation; Microphones; Military communication; Noise level; Radio transmitters;
fLanguage
English
Journal_Title
Proceedings of the IRE
Publisher
ieee
ISSN
0096-8390
Type
jour
DOI
10.1109/JRPROC.1946.233567
Filename
1697029
Link To Document