This effect reduces high volume levels while bringing up the level of quieter sounds, smoothing out any variations in overall volume.

Parameter Value Explanation
SUSTAIN 0–100 Sets how long the effect is applied to the decaying sound.
ATTACK 0–100

Sets how long it takes to reduce the volume when a high input level is detected.

RATIO 0–100 Sets the compression ratio.
LEVEL 0–100 Adjusts the volume of the effect sound.


This effect may output a very loud sound, depending on how the parameters are set. Use caution not to raise the values too much.