The Expander processing object reduces the level of signals that fall below a threshold level.
Show Side chain:A side chain input can be made available so that an equalizer for example can be introduced to make compression frequency conscious. Any side chain processing would normally derive its signal from the same source that is fed to the audio input of the compressor.
Stereo: Makes the Compressor stereo. Note: Controls will stay the same, adjusting both sides equally.
Threshold control: Adjusts the level threshold below which gain reduction will take place. Above this threshold no gain reduction will take place.
Ratio control: Adjusts the aggressiveness of expansion.
Attack control: Adjusts the time it takes for the expander to recover after the signal level goes above threshold.
Release control: Adjusts the time it takes for the expander to respond to signal levels which fall below the threshold.
Bypass button: Removes the expander from the signal path.
Gain Reduction meter: Displays the amount of gain reduction being applied.
! The expander can cause distortion at low frequencies when the Release control is set to low values. Unless you particularly need the expander to attenuate very quickly when the signal falls below threshold, set the Release control to a reasonably high value.