A noise gate or simply gate is an electronic device or software that is used to control the volume of an audio signal. 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.[1] However, noise gates attenuate signals by a fixed amount, known as the range. 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". If the signal falls below the threshold, no signal is allowed to pass (or the signal is substantially attenuated): the gate is "closed".[2] A noise gate is used when the level of the "signal" is above the level of the unwanted "noise". The threshold is set above the level of the "noise", and so when there is no main "signal", the gate is closed.
A common application is with electric guitar to remove hum and hiss noise caused by distortion effects units. A noise gate does not remove noise from the signal itself; when the gate is open, both the signal and the noise will pass through. Even though the signal and the unwanted noise are both present in open gate status, the noise is not as noticeable. The noise becomes most noticeable during periods where the main signal is not present, such as a bar of rest in a guitar solo. Gates typically feature "attack", "release", and "hold" settings and may feature a "look-ahead" function.[3]
The attack, hold, and release functions of a noise gate
^Hodgson, Jay (2010). Understanding Records, p. 86. ISBN 978-1-4411-5607-5.
^Davis, Gary; Jones, Ralph; Yamaha International Corporation (1989). The Sound Reinforcement Handbook. Hal Leonard. ISBN 0-88188-900-8..
A noisegate or simply gate is an electronic device or software that is used to control the volume of an audio signal. Comparable to a compressor, which...
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type of noisegate designed to suppress weak signals. Squelch is used in two-way radios and VHF/UHF radio scanners to eliminate the sound of noise when the...
full. A noisegate mutes signals below a set threshold level. A noisegate's function is in, a sense, opposite to that of a compressor. Noisegates are useful...
Burst noise is a type of electronic noise that occurs in semiconductors and ultra-thin gate oxide films. It is also called random telegraph noise (RTN)...
unwanted noise and hum can be introduced into the sound. Some performers use a noisegate pedal at the end of a chain to reduce unwanted noise and hum...
left alone. A common approach is to apply a noisegate or squelch process on the noisy signal. The noisegate can be realized as either an electronic device...
noisegate) and difficult to understand the sudden change in sound level can be jarring to the listener. To counteract these effects, comfort noise is...
whammy pedal, a Korg DT-7 chromatic tuner and a Rocktron Hush IIC noisegate. The noisegate allowed him to control the feedback associated with high levels...
applications, signal gating is used to reduce background noise or eliminate unwanted sounds. For example, in live sound reinforcement, a noisegate is often employed...
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then feeding that reverb signal through an electronic device known as a noisegate. This unit can be programmed to cut off any signal fed through it, either...
mixer settings, along with the inclusion of a dedicated compressor and noisegate on every channel on SL 4000 E Series consoles and its successors and variants...
version based on the 2008 Bass Big Muff Pi. This pedal has dry blend, noisegate, high pass filter and low pass filter controls. It confains an XLR DI...
Penis" consists largely of a distorted electric guitar riff fed through a noisegate and a delay, backed by organ and drum grooves with brief lead guitar improvisation...
with the EMT 250, and became popular in the 1980s. Gated reverb combines reverb with a noisegate, creating a "large" sound with a short tail. It was...
amplifiers. Barrett runs a few pedals, namely an ISP Technologies Decimator noisegate, Boss MT-2 Metal Zone, Boss TU-2 Chromatic Tuner and a Maxon ST-9 pro+...
Pink noise, 1⁄f noise, fractional noise or fractal noise is a signal or process with a frequency spectrum such that the power spectral density (power...
quieter. A noisegate can be thought of as an extreme form of downward expansion as the noisegate make the quiet sounds (for instance: noise) quieter or...
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