Win8.1 64 Sonar 8.5 Studio 64 Motu Ultralite ASIO drivers.
 
I am getting a helicopter blade-like audio artifact in the background when I am triggering TTS or DimPro 64. It gradually fades away when I stop playing.  Ideas?
 
 
 
Edit: added [Solved] to subject - scook

What sample rate are you running?

I think I just figured it out. My Roland XP 50 that I am using for a midi controller just croaked on me.

please edit the initial post and add [Solved] to the subject.

Solved:
 
Thank God for You Tube & the fine folks that take the time to post how-to videos.
 
For anyone else out there making do with old equipment....The internal battery died (I'm surprised it lasted 20 years!) taking the User memory with it.  A new battery, factory memory reset and and LCD display readjustment solved the problem.  That and setting the unit up to use with remote sequencers.