This is not a special Carenado problem, but the current Carenado planes show a nice spread of the anomaly. Talking about the wrong prop sound on sim planes with constant speed props (the prop alters the blade angle and keeps rpm steady, to a certain extent).Now you may already got used to the wrong behaviour, which is that the rpm change on the constant speed prop does not alter the prop sound, only the throttle (or power lever on the turbines) does.Now some planes (in the sim) do it right in my eyes. As a matter of fact, the very latest Carenado releases are among them and if you jump into the JetProp (turbine) or the A36 (piston) and change the rpm, you'll instantly hear how it is supposed to be. Small rpm changes can instantly be heard.Now jump into older releases, perhaps the C208 (turbine) and do the same there. Noted the difference? The rpm doesn't give you a difference in the sound, but only the engine power does. You see that the rpm stay at 1800 for example, but the sound still pitches up as the engine increases torque.If you decrease rpm in the C208 (which should lead to a lower pitched prop sound), the torque goes up (due to the lower rpm) and you even hear a higher pitched prop sound. Wrong! To be clear, this wrong thing happens on a lot of planes, especially the default ones of course.So how could we achieve the correct behaviour in the sim?I've tried the rough approach again and just used the JetProp (correct behaving) sounds on the C208, which comes with a 'wrong' set in regard to the mentioned behaviour. By doing this, I've tried to check if it's a throttle gauge thing or 'just' some sound.cfg problem. As it shows, the simple exchange enables the correct behaviour on the C208. So where's the trick?I've looked into the sound.cfg parameters and the description of them, but those values are way above my head. The FSX SDK explains how they are meant to be written, but I have no idea on where to tweak to get that prop to sound right.Can anyone help?