Transpose semitone on Virus C

[quest]

Hi there,

I'm creating an ambient/drone track and would like to have a smooth pitch transposition effect (by an octave or so up and/or down) on one of the oscillators as the note plays.

While the pad is playing, I'd like to smoothly transpose the semi (pitch) of one of the oscillators on my Virus C to add some interesting shifts in the parts of the sound. I know I can do it manually but can anyone help me automate this pitch shift--perhaps using an lfo on the virus, my controller (Novation Impulse 49) or ableton?

Thanks very much! I appreciate any help!

Chris