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3.2. Understanding the Phaser BI-TRON Signal Flow
The Phaser BI-TRON plug-in is a unit capable of quite complex routings. It is a double circuit
phaser, to start with, which means that we have the signal split between two channels.
These two channels may interact in several ways. The following diagrams illustrate all the
possible routings the audio signal can follow:
Independently of the routing, the signal follows always the same path inside each of the
two phaser engines (labeled as Phasor A and Phasor B, like in the original hardware unit).
After entering the unit, the signal is pre-filtered. Then it is split in two. One part is the dry
path, which is routed directly to the output, when bypass is activated. Otherwise, this part
will not be output.
After this split, another split occurs. This time, the dry signal is routed to the mix controls,
where it will be mixed with the Wet (processed) signal.
The other part of the signal is routed through the engines, according to the chosen routing
(pictured in the diagram above). Inside each engine the signal starts to be be filtered (again)
this time by an Hi-Pass filter. This filter will cutoff the lowest regions of the signal. This way,
if we are processing, for example a bass guitar or a kick, the lowest part of the signal will not
have its phase affected. This may be handy because messing with the phase may remove
some "punch" on the attack.
Arturia - User Manual Phaser BI-TRON - PHASER BI-TRON OVERVIEW
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