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Expansion Ratio:

Expansion Ratio:

The expansion ratio sets the amount of noise reduction applied to a signal once the signal has dropped below the expansion threshold. For example, a 2:1 expansion ratio attenuates a signal 2dB for every 1dB it drops below the threshold. Ratio’s 4:1 and higher act much like a noise gate without the ability to tailor the attack, hold and release times.

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