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Notch

By Sweetwater on April 20, 1999

A word used to describe a very narrow band of frequencies to be cut by an equalizer. When an EQ circuit has a very high Q (narrow bandwidth) it is sometimes referred to as a notch filter. Notch filters are commonly used to suppress feedback in monitor or PA systems, and are sometimes used to remove specific types of hum and noise in recordings.

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Notch

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Notch

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