Why do some microphones screech? And why do the ones at big events like award shows not screech?
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u/voretaq7
provided a [great explanation](https://www.reddit.com/r/explainlikeimfive/comments/15t228l/comment/jwhmdyb/?utm_source=share&utm_medium=web2x&context=3) for most of the factors.
One that they left out is feedback elimination processors. High end venues have equipment in place that work like an equalizer with a lot of very narrow, robot-operated sliders to automatically cut the volume of any frequencies where feedback starts to happen.
They don’t need an audio engineer to constantly listen for feedback and do something about it. The equipment notices faster and deals with it more efficiently than a human can.
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