Are there any generic HD Audio drivers out there for XP? I got a Dell Studio 1737 a few weeks back and while nearly everything is grand, the sound chip is terrible. It's one of those Sigmatel/IDT HD Audio chips.
When using XP some sounds are lower pitched than normal, such as the Windows system sounds. It seems that anything that uses the waveOut API to play audio comes out at a lower pitch. But if an app is started which uses DirectSound, such as an MP3 player, then all sounds play normally for as long as the app is left open. I did come across this on a Dell Dimension 5150 years ago but a driver update fixed it. However I've had no luck with this one, I tried XP drivers from an Inspiron 1545 and Studio 1555, both install fine with no mods but do have this problem. Vista and Windows 7 don't seem to be affected at all (do they even use waveOut anymore?).
So back to my original question, are there any other drivers I could try? Preferably one that has nothing to do with IDT.
EDIT: I can elaborate a bit further. The pitch variation seems to depend on the sample rate. At 48000 or 44100 the pitch is fine. At 22050 and 11025 the pitch is lowered, and at 8000 it's higher pitched.