helicopter turbine engine sounds

[navymustang]

I am trying to tailor my engine sounds so that there is a noticeable change in pitch and volume in the turbine(s) as it goes from ground idle to flight idle.
In the sound.cfg file for P3d I am fumbling as to which parameter P3D expects to be the N1 or N2 turbine sound that varies using the rparam and vparam entries. Is that the jet_whine sound? If so, it always stays at a single pitch regardless of fuel flow for idle or flight. That's a 40% change in N1, so there will (should) be a very noticeable difference. I have great rotor sound that varies with RPM and great startup and shutdown sounds. I just need a turbine (idle) sound that varies with fuel flow.
OK for those who don't know, almost every add-on helo I have checked does not do this, so it may be a limitation of the helo version of the turbine.

[MistyBlue]

I don't know if this will help, but here's a Dovetail SDK doc I found a little while back when I was working on improving my ProSim sound set and dived into sound creation a bit.  It was pretty challenging, to say the least.  I think in part because some things are controlled by the model that you just can't can't manipulate with just the sound.cfg.

[navymustang]

This is an excellent article, it adds to some papers I already have. Thank you.