No sh*t Sherlock. I'm well aware that the engine speed dictates the sound output rather than speed.
No idea what the revs were but fairly low as would be suggested by my statement that the engine was at 30 to 40 mph under light load. I wasn't actually analysing it, it was just a general impression
I don't think you would be able to record the sound as it's so quiet in the car but precisely because it's so quiet you notice the slight increase in exhaust noise. It's a low frequency resonance I think.
"V6 shakes the trees" :ROFL: I've got two V8's in the garage if I want to do that. The V6 is about quiet waftiness (as is, if I'm honest, one of the V8s).