studio460 wrote: ↑
Thu Apr 01, 2021 5:11 pm
gentle_attack wrote: ↑
Thu Apr 01, 2021 5:07 pm
studio460 wrote: ↑
Thu Apr 01, 2021 2:28 am
Thanks. But, shouldn't I be able to do this with an o_C (e.g., Harrington 1200-mode)? "This," being, sending a root-note from my Waldorf kb37 via its CV-pitch output, then having the o_C add two additional notes a certain amount of steps away from that note (i.e., to form a triad)? Then take three of the o_C's outputs and send them to the three v/oct-inputs on the Chainsaw?
I'm not an expert on Harrington 1200 but that should work. o_C is definitely a good tool for something like this because it can quantize... but you just have to think about if/how you want to input the CV for pitch2 or pitch3- will those be constant intervals from your "played" note . . .
Thank you for that detailed reply! Yes, I would only want to generate the two other notes at a constant interval from the "played" note; i.e., I would simply like to play triads in a certain scale. My music theory is virtually nil, so maybe what I said isn't even correct.
You're making sense - this is a pretty basic application so shouldn't be too tough. The octave example is the easiest.
If your keyboard CV is outputting 0v which will create a C0 tone on oscillator 1
If you want Oscillator 2 to be C1, you need to add 1v to get your 1v/Oct Oscillator to play a C but higher octave. You could do that with an offset voltage, you will multi the Keyboard's 0v, then add to it offset's 1v using a precision adder, for a total of 1v, and then run that to Oscillator 2. Keyboard CV hitting Osc1, Keyboard CV + 1v hits Osc 2. You play D0 you get D0 and D1.
If you want to do a perfect fifth, you need to go up 7 semitones, so you need to add (7/12)*1v = 0.583v to get Oscillator 2 play a fifth. If you play a C on the keyboard, you get a C on Osc1 and a G on Osc2. Play a D on keyboard, D on Osc1 and A on Osc2, and so on.
The only rub with this set up is that you will hope your offset voltage can be fine tuned to the value you want (1v in example 1 or 0.583v in example 2), and don't bump that knob! The nice thing about Quantizers is that they can do some rounding, according to your wishes, so even if your offset is on 1.13v, you can set the quantizer to round that back down to 1v. According to your settings ("rules" basically) you can do all kinds of voltage math and logic to get complex Control Voltages... but then the Quantizer can lock that back down, according to your settings, to a specific scale, or even a few notes, to that the madness all comes back to the CV values, and therefore notes of the scale, that you want to be working wtih.
Now making "music' with this is a whole 'nother adventure, but purely from an intellectual "math as music" standpoint it is pretty interesting.