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J Am Acad Audiol 2001; 12(06): 322-326
DOI: 10.1055/s-0042-1745615
Original Article

The Nature of Electromagnetic Interference

Harry Levitt
Lexington Center for the Deaf, Jackson Heights, New York
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Abstract

This report provides a brief tutorial on the underlying physical forces that lead to interference with hearing aids and assistive listening devices, as well as measurement issues and possible solutions to the problem.

Abbreviations: ALD = assistive listening device, EM = electromagnetic, TEM = transverse electromagnetic

Keywords

Assistive listening device - hearing aid - interference


Publication History

Article published online:
02 March 2022

© 2001. American Academy of Audiology. This article is published by Thieme.

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  • International Electrotechnical Commission. (1981). Methods of Measurement of Electroacoustical Characteristics of Hearing Aids—Part 4: Magnetic Field Strength in Audio-Frequency Induction Loops for Hearing Aid Purposes. (IEC 118–14).
  • IEEE Recommended Practice for an Electromagnetic Site Survey (10 kHz to 10 GHz). IEEE Standard 473–1985.
  • IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. IEEE Standard C95.1–1999.