A noise gate is used when the level of the "signal" is above the level of the unwanted " noise". ![]() If the signal falls below the threshold, no signal is allowed to pass (or the signal is substantially attenuated): the gate is "closed". In its simplest form, a noise gate allows a main signal to pass through only when it is above a set threshold: the gate is "open". However, noise gates attenuate signals by a fixed amount, known as the range. ![]() Comparable to a compressor, which attenuates signals above a threshold, such as loud attacks from the start of musical notes, noise gates attenuate signals that register below the threshold. ![]() A Drawmer dual noise gate unit in a rackmountable format.Ī noise gate or gate is an electronic device or software that is used to control the volume of an audio signal.
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