Microphone/Loudspeaker feedback is that dreadful howl or squeal you sometimes experience eminating from loudspeakers during a live performance, speech or presentation.
The HowToAV team looks at techniques and technologies to avoid feedback and ensure an interference-free performance.
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. So unless you are aspiring to become the next Jimi Hendrix or Pete Townsend, feedback on your loudspeakers is a bad thing!
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. 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.
Feedback can result from a number of factors such as:
A simple PA system consists of a microphone, amplifier and one or more speakers. If you have these three components, you have the potential for feedback. Feedback happens when the sound from the speakers is picked up by the microphone and is re-amplified and sent to the speakers again. This continuous loop results in the howl/rumble of the feedback effect.
A number of options should be considered to eliminate feedback including:
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