How Does Sigma Work - Solid State Logic Sigma User Manual

How does Sigma work?

Sigma works by using faders in your DAW as analogue gain controls. Sigma communicates with your DAW in the same way
a control surface does, but instead uses the DAW's fader positions to control the gain of 16 analogue "faders". The
automation in your DAW session can be used to "ride" the levels of an analogue mix, bringing together the efficiency of
a DAW automation system with the sound of your favourite analogue outboard equipment.
Fader Automation data
(over Ethernet)
The picture above is intended to give a graphical representation of how DAW automation controls Sigma's analogue gains.
1. Automation data is generated in the DAW.
2. This data is sent over the ethernet cable from your computer into Sigma, via the relevant protocol (HUI/MCU/MIDI).
3. Sigma takes the DAW automation and transforms it into analogue gain changes. This is done using MDAC technology.
Think of MDACs as the "virtual faders" within each channel of Sigma.
Note: MDAC stands for Multiplying Digital to Analogue Converter. MDAC technology is used in the Duality and AWS
consoles.
DAW Audio
Outputs
Converters
Page 6
Analogue Signals
(Pre Automation)