Rhodes Chroma Polaris

> From: steven pistrich
> 
> at the moment im sure i sound like an idiot, but i guess im 
> not sure  what the pitch 1 and 2 are  that you describe---   
> and their relation to the 'mod lever' effect.   so the 
> modlever affects the vco (oscillators) , not the filter?  Im 
> used to understanding ,lets say, how the mod lever on my Juno 
> can affect  3 things , pitch, filter or LFO-- or on  a DSI 
> you select a 'destination' for the mod wheel that can be 
> selected from an assortment of parameters.   Could you 
> describe the  Polaris mod lever  and its range in those 
> terms? what  parameter am i controlling with it?  your answer 
> was a bit more complex than i expected and now im more confused

Pitch1 and pitch2 are the numeric values that control the pitch of the two
oscillators. Ignoring the rest of the formulae, the mod lever position,
which ranges from -1 to +1, is multiplied by the (undelayed) sweep signal,
which can be a sine wave or a square wave, and modulates the pitch of both
oscillators equally. It doesn't modulate the filter or anything else. The
sweep can modulate filter tuning or oscillator pulse width, but not through
the mod lever.

-- 

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@...