Fisheries Extension Education (2+1)

Acoustic Feedback

Sound from the speakers returns to the microphone and is then re-amplified and sent through the speakers again. This generally manifests itself as a sharp, sudden high-volume piercing sound which can damage the loudspeakers' high-frequency horns or tweeters - and audience members' hearing.

In order to prevent feedback, the microphones should not be pointed towards speakers, the on stage volume levels should be down, and frequency levels should be low by Using a graphic equalizer, parametric equalizer a combination of both devices, or a notch filter.