Hello Rod,
I don't myself have detailed knowledge of the Paramount sample sets, but my suggestions would be:
- In Hauptwerk (v6, which you're using) go to the "Organ settings | Organ preferences | Audio engine" screen and make sure that you have the "High-definition pitch-shifting" option is ticked. If that doesn't eliminate it:
- Switch your MIDI console off for now, so as to eliminate any possibility of it triggering any virtual controls unintentionally, then see whether you can still reproduce the effect by clicking on the virtual stops and keys with the mouse. If you can still reproduce it:
- Exit Hauptwerk, then launch one of the "Hauptwerk (alt config N)" configurations (desktop shortcuts) which has all-default settings, and make sure that you audio driver is selected.
- Still within that configuration, load the sample set and see whether you can reproduce the effect by clicking on the virtual stops and keys with the mouse. (With default routing settings, all audio will be routed to a single stereo output, which could help to determine whether the problem is somehow related to one of your audio amplifiers/speakers/channels in your usual multi-channel audio set-up.) If you can still reproduce it:
- See whether you can still hear it on headphones.
Does that help?