My Hardware...
I tried Keyrite on many computers (for test) and the audio cards used were:
C-Media & Crystal (Audio Chip), SB PCI 128, SB Live 5.1 Digital & Audigy. All had the latest update from C-Media (ECS Group), Crystal from Dell, Creative and latest Directx 9.0b with reduced or tried at max acceleration. All gave me that quivering sound.
I tried using Keyrite for live performance but people were asking if I had a problem with my sound system!
I didn't notice any quivering when using the key change from my Audigy Card. I believe the key change is analogue; it's after the Digital to Analogue converter so it can't compare with the technology Keyrite is using.
It doesn't play in Stereo & will move a full Key versus half a key for Keyrite.
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