Apple Using WaveBurner Pro 1.0 (with Logic Pro) - Manual (Page 29)

29
Limiter
The Limiter prevents the audio signal from exceeding a maximum volume level. While a
compressor gradually lowers levels above the threshold, the Limiter puts a hard limit
on any signal louder than the Gain level (analogous to the threshold setting on a
hardware limiter). By keeping the Gain parameter below 0 dB, the Limiter can help your
projects have the greatest perceived loudness without clipping.
The Limiter has lookahead and release parameters which work similarly to those for the
Compressor and Multipressor. In addition, it has an Output Level slider and a Softknee
button. The Output Level parameter controls the output volume, independent of the
Gain setting. Turning on the Softknee button, as the name suggests, slightly softens the
degree to which sounds above the Gain setting are lowered. When the Softknee button
is turned off, sounds above the Gain setting are limited using a completely linear curve.