You can actually find that out yourself. On each engine's page, there is usually a Support page with a link to the Sound File. Download that file and look at bytes 0x08 and 0x09. That is what I call the Scale Factor but I really don't know what it is or what it does other than enabling my RTC program to calculate the DOD and DTO values as I describe in my RAM mapping document.
I'd be interested in seeing the results of your analysis.