Feedback is that ringing tone, it varies from a low rumble to a high screeching noise - it is not only annoying, but it can also cause damage to your sound system or ears.įeedback can result from a number of factors such as:Ī simple PA system consists of a microphone, amplifier and one or more speakers. Microphone feedback occurs when the sound amplified from a loudspeaker re-enters the sound system through an open microphone and is then amplified again and again. So unless you are aspiring to become the next Jimi Hendrix or Pete Townsend, feedback on your loudspeakers is a bad thing! What is microphone feedback?

Microphone feedback also sometimes referred to as the ' Larson effect' - that awful howling sound loved by rock guitarists and hated by every sound engineer and presenter.