BeatStep Pro CV to Frostwave Resonator for creating melodic/arpeggiated tones?

[lukievan]

Hi all. I posted this before on the Beatstep (non-Pro version) forum but didn't get any replies, so thought I'd try here.

I'd like to use the Beatstep Pro to create in-tune, pitched arpeggios on a Frostwave Resonator, which has 4 CV inputs (for HP and LP Frequency and HP and LP Resonance). Does anyone know if this is possible? The Frostwave can go into self-oscillation when you crank the resonance, so it can produce pitched tones on it's own.

I'm thinking I would send the CV out to the LP Frequency and the CV Gate to the LP Resonance? Not sure how the CV values on the BSP relate to the Frostwave, though here's a schematic of the FW if that helps:
http://s214.photobucket.com/user/digi2t/media/Resonator/Resonatorschematic_zpsdd38d857.jpg.html

I also posted this on the TapeOp forum and got some helpful advice but still want to get more clarity on whether this will work before I buy:
http://messageboard.tapeop.com/viewtopic.php?p=692420&sid=64b45a8183a98edb490cf5ba9e60b071

Thanks so much for any insights!

Cheers,
Lucas

[megamarkd]

Hi Lucas,

I've use my BSP to modulate my Nandamonium, which has a very odd cv response.  I also use it to play my MS-20 (who's filter the Resonator is based on) while I use Fat Controller to modulate it (another Frostwave box!).

Using the pitch cv as a modulation source is not as a good as using the velocity cv.  I've played with the centre-point of the pitch cv, but because all that is set on the BSP via a computer, I didn't mess with it too much (I don't use computers in my studio).

I've made LFO's using the BSP to good effect.  Comparing the response between pitch cv and velocity cv in this work mode is how I got a better feel for using the BSP as a cv modulation source.

Using the trig as a mod source for the peak/resonance on the Resonator is a good idea for gating the Resonator.  I'd try using the velocity before the pitch for the 'playing' of the cutoff frequency.

So basically the short answer is yes, you should be able to 'play' the Resonator with a BSP nicely.

MarkD

postscript: I just thought, I never changed from Hz/v when I tried to use pitch cv to modulate, so using v/oct may yield better results.

[lukievan]

Thanks Mark - that's very helpful. I don't have a BSP yet but I'm leaning towards getting one now!