User Manual

Table Of Contents
WAVELAB
Plug-in Processor Reference 33 – 789
AutoLevel
AutoLevel reduces signal level differences in audio material. It can be
used to process recordings where the level unintentionally varies. It will
boost low levels and attenuate high level audio signals. Only levels above
the set threshold will be processed, so low level noise or rumble will not
be boosted. If the input level is greater than 0dB, AutoLevel will react very
fast, because it looks ahead in the audio material for strong signal levels
and can attenuate levels before they occur, thus reducing the risk of sig-
nal clipping.
Compress
Compress reduces the dynamic range of the audio, so that softer sounds
get louder or louder sounds get softer, or both. Compress functions like a
standard compressor with separate controls for threshold, ratio, attack,
release and make-up gain parameters.
There is also a separate display that graphically illustrates the compressor
curve shaped according to the Threshold, Ratio and MakeUp Gain pa-
rameter settings. Compress also features a Gain Reduction meter that
shows the amount of gain reduction in dB, and a program dependent
Auto feature for the Release parameter.
Parameter Description
Threshold Only levels stronger than the set threshold will be processed.
Reaction Time
Switch
This parameter sets the amount of time it takes for AutoLevel to adjust
the gain. Set this according to whether the program level changes sud-
denly or over a length of time.
Parameter Description
Threshold This setting determines the level where Compress “kicks in”. Signal lev-
els above the set threshold are affected, but signal levels below are not
processed.
Ratio Ratio determines the amount of gain reduction applied to signals over
the set threshold. A ratio of 3:1 means that for every three dB the input
level increases, the output level will increase by only one dB.
Attack This determines how fast Compress will respond to signals above the
set threshold. If the attack time is long, more of the early part of the sig-
nal (attack) will pass through unprocessed.