During my music class my teacher told me I should search about sound feedback.
A
simple PA (public address) system consists of a microphone, an amplifierand one
or more speakers. Whenever you have those three components, you have the
potential for feedback. Feedback occurs when the sound from the speakers makes
it back into the microphone and is re-amplified and sent through the speakers
again.
What
causes that howling sound in PA systems? | HowStuffWorks. 2016. What causes
that howling sound in PA systems? | HowStuffWorks. [ONLINE] Available at:
http://electronics.howstuffworks.com/gadgets/audio-music/question263.htm.
[Accessed 16 April 2016].
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