Softube fet compressor, Руководство пользователя, Страница: 17 / 27

Lookahead
The Lookahead can be used if the fastest attack time isn't fast
enough, for instance if you want to apply some heavy limiting to
a signal. The
Lookahead will delay the signal path outside of
the detector by up to 1 ms, leaving the detector signal
unaffected. This has two effects:
1. The output signal will be delayed by up to 1
millisecond.
2. The detector will “see” the undelayed signal, but reduce the gain on the delayed
signal. This means that the detector will be able to compress the signal before
the actual transient comes (since the actual transient has been delayed).
The Lookahead time corresponds to the total latency of the plug­in. The plug­
in will not report this latency to the host, since almost no hosts support
compensating for a delay that depends on a parameter.
Some very fast Attack / Release settings will cause a “crackling” sound on transients, often
sounding like some sort of digital clipping or saturation somewhere in the signal chain. This
is very typical for this kind of compressor, but is usually an unwanted effect. The normal
way to get rid of this “side effect” is to slow down the attack and release times but now you
have another tool to use. By adding a little lookahead to the detector, many of these side
effects can be avoided.
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Figure 12: The
Lookahead knob.