You can use the Noise Gate to silence unwanted signal noise or hum, or just for an effect.To use the Noise Gate to clean up unwanted, low level noise:2 For the next steps, hold your guitar but don’t play it (and be sure to leave its volume up). You should hear only the noise that we’ll soon get rid of.3 To make it easier to hear the effect, begin by setting the Release to its middle (12 o’clock) position.4 Now raise the Threshold control to its highest setting, fully clockwise, so that the Gate fully closes (you shouldn’t hear anything coming through Eleven).5 Slowly lower the Threshold control until the Gate opens again to find the cutoff (or, threshold) of the noise.6 Raise the Threshold control again slightly, increasing it only enough to once again silence the noise (hold Command (Mac) or Ctrl (Win) while adjusting to be able to fine-tune the setting in tenths of a dB). Now you’re in the ballpark.7 If you lowered the Release setting as suggested in step 3, make sure to return it to its maximum setting (fully clockwise) before continuing.