Soundtoys PhaseMistress - Manual (Page 40)

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Rhythm
The Rhythm pop-up allows you to set the speed or rate at which the sample and hold
will jump to a new value.
Smoothing
The Smoothing knob works much the same as it does in the Rhythm Editor and can
be used to smooth out transitions between the random values. A setting of zero
equals no smoothing and the values will jump from one to the next. The maximum
setting will give you a smooth, constantly changing random phase variation some-
times referred to as the "drunken walk" for obvious reasons.
Random Step Mode
The Random Step mode combines the sample and hold effect with an envelope fol-
lower. Instead of changing to a new value at a specific set rate, a new random value
is triggered when you press the Trigger button; in response to a MIDI note trigger, or
when the input signal exceeds the Threshold setting.
This works really great on drums and other highly percussive signals, and can be
used to create a creative, dynamic effect that varies with each audio event.
Trigger
Press this button to trigger a new random value. The trigger button will also respond
to any MIDI note event.
Threshold
As previously discussed, the Threshold knob controls the level at which the input will
trigger a new random value. To turn off audio based triggering (if you’re using MIDI
or manual triggering), turn the threshold knob all the way up.