Soundtoys Crystallizer - Manual (Page 27)

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Attack
The Attack control is used in conjunction with the Gate/Duck control and allows you
to adjust how quickly or slowly the effected signal is gated or ducked when the input
level passes the setting of the Threshold knob.
With Ducking, the Attack time determines how quickly or slowly the effect signal will
be ducked once the input signal passes above the Threshold setting. With Gating, the
Attack time will determine how quickly or slowly the signal is gated and will appear
as the input signal passes the Threshold setting. The faster (lower) the setting of the
Attack knob the faster the effect signal will be ducked as the input signal passes the
Threshold level setting. The slower (higher) the value of the Attack knob the slower
the effect signal will be ducked or gated as the input signal passes above the
Threshold setting.
This allows you to change the level of the effect very quickly with short Attack set-
tings or to have the effected signal slowly drop in volume with longer Attack times.
It is important to keep in mind that with longer Attack times the input signal has to
be held above the Threshold level long enough for the signal to slowly fade out. If the
input signal is rapidly going above and below the Threshold setting the response of
the Ducking or gating will be too slow to respond. In this case you would need to
lower (speed up) the Attack time so it can react more quickly.
Release
The Release control is used in conjunction with the Gate/Duck control and allows you
to adjust how quickly or slowly the effected signal returns to its "normal" level once
the input level drops below the setting of the Threshold knob.
With Ducking, the Release time determines how quickly or slowly the effect signal
will "come back up" to its normalized level. With Gating, the Release time will
determine how quickly or slowly the signal will "drop back down" to the level set on
the Gate knob. In both cases the Release is engaged once the input signal drops
below the Threshold setting. Again, keep in mind that the longer the Release times
the slower the change in the level of the effect signal. In most cases you will want to
tweak both the Attack and Release times based on the dynamics of the input signal.
Low Cut
The Low Cut knob controls a 12db per octave highpass filter and allows you to reduce
the low frequencies of the effect signal based on the frequency setting of the knob.
The range of the knob is from 1.00Hz to 5000Hz and as you turn the knob up the
frequency increases and more of the low to mid of the signal in the effected sound
will be eliminated.