The volume automation in Audition is done in dB values from - infinity to +15.

The .sesx file does save these values in long numbers between 0-1. Unfortunately help desk, user forums and a mathematician were not able to find out how they are calculated. I am working on big projects and entering values directly in the .sesx file would help my workflow enormous! I would love to get the formula or maybe in a future update if the data would be safed in dB values.