OSHA and similar approved ear defenders are converted to either one- or two-way communicators, without breaking through the defender structure. Driving the defender at selected external points by means of inertial transducers or by direct audio induction through the cup using a split transformer to energize an internal transducer produces acceptable and intelligible response within the defender. Demonstrations will be made.

Authors: Cohen, Abraham; Sebesta, George J.; Hofer, Alan
Affiliation: DYNA MAGNETIC DEVICES, INC., HICKSVILLE, NY
AES Convention: 52 (October 1975) Paper Number: 1073
Publication Date: October 1, 1975 Import into BibTeX
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=2359

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