The Gate Stomp is great for eliminating noise and weak signals while letting the music pass through. The Gate is offered in Mono and Stereo.
THRESHOLD: 0 to -80dB; Default: -56 This sets the sensitivity of the gate. The lower the setting, the louder a signal will have to be to pass through.
ATTACK: 0.01 to 10; Default: 0.05 This controls how quickly the gate should open when energy goes above the threshold. A shorter attack time opens the gate more quickly.
RELEASE: 0.01 to 1500ms; Default: 100 Release control how fast, in milliseconds, the gate closes when the energy falls back beneath the Threshold.
HOLD: 0.01 to 5000ms; Default: 0.20 The hold control will keep the gate open after the last attack for the amount of time that you set it to.
Waves Guitar Tool Rack User Guide.