LinPlug CrX4 - Manual (Page 39)

Flanger
The CrX4’s Flanger can be used to create the classic flange effect
produced by using two analog tape machines playing back the same signal
but with small (and changing) differences in the playback speed of the
machines.
The Time control defines the length of the delay line, representing the delay
between the original (tape machine 1) and the delayed / wet signal (tape
machine 2).
The Feedback control feeds the processed signal back to the input of the
effect producing a more pronounced and richer effect.
The Invert control inverts the
processed signal's phase
against the original signal,
giving a subtly different
sound.
The Mod Rate control sets
the speed of the flange effect
(the speed of the cyclic changes of the two tape machines). This setting
can be either made with the slider or set as a fraction of the song tempo
using the “Sync” popup menu.
The Mod Depth control is the key parameter for determining the depth of
the flange. The higher the setting, the more pronounced the effect.
The Pan Depth control is unique to the CrX4 and not normally found on
flanger effects. This control allows the stereo position of the flanged signal
to be modulated according to the setting of the Rate parameter.
CrX4 User Manual 39