A compressor evens out differences in gain by reducing dynamics (difference in volume
between quiet sounds and loud sounds). This effect is often used to ‘fatten’ a sound by
making every individual element of the sound closer to the same volume. Every time a
sound goes over a certain volume (Threshold), it is reduced by a specified amount
(Ratio). Attack and Release determine how quickly the reduction is added and how
quickly it disappears. Makeup boosts the compressed signal’s level.