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Sound reinforcement system
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====Feedback suppressor==== A [[feedback suppressor]] detects unwanted [[audio feedback]] and suppresses it, typically by automatically inserting a [[notch filter]] into the signal path of the system. Audio feedback can create unwanted loud, screaming noises that are disruptive to the performance, and can damage speakers and performers' and audience members' ears. Audio feedback from microphones occurs when a microphone is too near a monitor or main speaker and the sound reinforcement system amplifies itself. Audio feedback through a microphone is almost universally regarded as a negative phenomenon, many [[electric guitar]]ists use guitar feedback as part of their performance. This type of feedback is intentional, so the sound engineer does not try to prevent it.
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