Avionics Report

March 2013 Issue

Noise Suppression: Lone Star Eliminates

Ridding audio system interference is challenging and expensive. Noise filters help, but aren’t a cure-all.

For the owner who’s invested thousands of dollars for a high-end audio system upgrade, electromagnetic interference or EMI, is a frustrating and common problem. While it’s natural to point the finger at the shop who just performed an otherwise high-quality avionics installation, there’s a good chance the source of the noise has been there all along­—and now amplified by the clarity of a new audio system and ANR headsets. Unfortunately, this could mean extra repairs that weren’t budgeted for. In this article, we’ll look at the common sources of electromagnetic interference and popular noise suppression products that could eliminate most of it.

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