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Podcast: BrainStuff
Episode:

What causes that howling sound in PA systems?
Category: Science & Medicine
Duration: 00:02:11
Publish Date: 2016-01-13 14:00:00
Description:

A public address system's speakers emit strange noises, or feedback, when sound gets re-amplified. Get a detailed explanation of how feedback occurs in this podcast from HowStuffWorks.com.A public address system's speakers emit strange noises, or feedback, when sound gets re-amplified. Get a detailed explanation of how feedback occurs in this podcast from HowStuffWorks.com.

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