I have recently bought a secondhand Virus TI keyboard and I updated it to the latest beta level last week.
The problem I have is that when playing some patches it will randomly switch on full pitch modulation just as if I'd pushed the mod wheel full on! Is this a software bug? I can't see I'm doing anything to cause this? There doesn't seem to be any pattern as to when it will happen but makes it unusable live.
Random full pitch modulation
it would be a bug what we don't know of.
Thanks for the reply. I have searched around the internet and have seen that some other users have had the same problem but nobody has mentioned a workaround. Have you heard of this issue before? I would like to help fault-find it for you if you have any suggestions of things I could try.
Here is one link I found which describes the problem exactly http://www.infekted.org/virus/showthread.php?t=26307
If you're using additional Midi controllers I would recommend to do a test with any other Midi controller being temporarily removed from the setup to exclude that any other controller sends Midi signals that could cause this (Midi controller data).
If that has been tested and verified, I would try to record the data the TI sends out, so simply select a Midi track in Logic, hit record and let it run for quite a while until you get this issue. Then check the Midi track in Logic's list editor and check if any Midi commands or Midi controllers got recorded and if so, which ones. This will help to track down the issue.
Thanks for your reply. The Virus keyboard is being used standalone with only a sustain pedal connected. Nothing is connected to the control pedal or MIDI/USB inputs.
Perhaps the thing I have noticed is that the random full modulation appears to happen more often soon after switch-on, but can happen at any time. It's so annoying and really spoils the fun of owning such an otherwise fantastic synth.
I'm considering opening it up and seeing if there are any connectors that need cleaning as in my experiences it 'feels' like more of a hardware type concern than software; but who knows?
OK, I have solved the problem of the Random Full Modulation!
Here is the reason: I didn't have any expression pedal plugged into the control pedal socket - but - under menu 'Edit Config', 'Keyboard 4/5' the Control Pedal was set to Modulation. Normally this shouldn't be a problem but because my Virus TI is a few years old, the contacts in the socket are probably a bit dirty. Whenever the right amount of movement caused the contacts in the socket to move slightly, this was interpreted as a pedal full on and hence the randomness of the issue.
Solution is: if you don't have anything conected to the Control input socket, turn OFF the Control Pedal in Config. You could also try cleaning the contacts a bit!!