Oboe, AH uses the old fashioned method of playing the engine wav. It takes one sound, and changes the pitch correspoding to your throttle. The exact pitch of the orginal wav is roughly 35% at idle, and 75% for military power. Combat power or WEP pitch will be between 80% to 90% of orginal wav pitch, depending upon the plane you are flying.
To make it clear. You have a great engine you'd love to use. When you play it via windows it is playing at 100% orginal pitch. When you put it into AH, the maximum pitch you'll get is around 80% pitch of orginal wav. And when you lower it to idle, it is playing around 35% original pitch. Make sense?
So you can see right away why it becomes difficult to get a good sound at both idle and maximum. Don't ask me why HT only allowed 80% or so of original wav pitch.
BTW, if you haven't, check out the engines on my page. I've mixed wavs to get a good idle and maximum throttle sound. Particulary check out my letest, the updated P47 and 109 sounds. There are also start/shutdown wavs for some planes such as the 109 and p47, which I think blend rather good. They are start/shutdown sequences from the real planes.
http://corn555.tripod.com/sounds.html fscott
[This message has been edited by fscott (edited 04-03-2001).]