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FATSO Screenshots
Figure 80. The FATSO Jr. plug-in window
Figure 81. The FATSO Sr. plug-in window
FATSO Functional Overview
The FATSO was essentially designed to integrate frequencies in a musical
Four Processing
Types
manner and provide some foolproof vintage sounding compression. Gener-
ally, it is difficult to make the unit sound unnatural due to its vintage topology.
FATSO provides four types of processing.
Saturation and
Harmonic Generation & Soft Clipper
Distortion
Basically, this is a distortion generator associated with the Input knobs. Any-
Processor
time you pass a signal through the FATSO, it passes through this part except
in bypass. This processing is useful to softly but instantly clip peaks and tran-
sients, allowing a higher average level. Aggressive distortion can also be
achieved through the same controls.
It is well known that the triode distortion in tube circuits produces lots of 2nd
order and 3rd order harmonics, in somewhat varying ratios. Analog tape
also saturates in this manner. The 3rd order harmonic is induced in the
FATSO by increasing the level through two discrete distortion circuits and is
usually the result of flattening the tops and bottoms of waveforms. Second or-
der harmonics are also added especially while compressing in the FATSO.
The FATSO's input clipping will give you the same result. These lower order
harmonics form "the octave" and "the octave and a fifth" to the fundamental
musical tones. They are actually "musical" distortion. Harmonics above the
UAD Powered Plug-Ins Manual
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Chapter 18: Empirical Labs EL7 FATSO
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