Advanced Unison

[adamszabo]

I dont have a midi keyboard so unfortunately I wont be able to help with that part.

Regarding the cpu issue, what happens with this unison method is that we are actually playing a chord of 4 or 5 notes (or whatever you set your unison voices to), but instead of playing different keys you press the same key multiple times at the same time. In real life this of course wouldn't make sense since on a piano you can only press a key once. What this means is that we are calculating the signal flow several times (incl, envelopes, filter, etc) for all unison voices. So even if we just have one oscillator its still calculated multiple times.

The least cpu intensive way is to actually have several oscillators that are summed up, and you only calculate one filter and envelope for all at once.

[tulamide]

That's interesting: I had the same issue with my midi keyboard being ignored, but thought of a Flowstone hiccup. To read that others experience the same seems to make it an issue.

Regarding the cpu: If I follow the logic, then my very first proposal would be least cpu intensive. Having one oscillator outputting a number of slightly detuned versions of the same calculation. This way, still 4 oscillators are calculated at once, so with just a little overhead you get, for example, 4 x 4 = 16 "channels" for almost the same price.

[adamszabo]

Well lets imagine this: you have a complex synth with an osc, filter, envelope and an lfo. lets pretend all of them take 10 cpu cycles each. So if you have 4 unison, it calculates the whole signal flow 4 times. So osc + filter + env + lfo = 160 cycles (4*10 + 4*10 + 4*10 + 4*10). However if you only have 1 voice but you have 4 oscillators in your synth faking the unison then it becomes 70 cycles (4*10 + 10 + 10 + 10 ) since they get combined and you only calculate the filter env and lfo once. so its always better to have multiple oscs instead.

[BobF]

Hello gang,

I am curious why can't some kind of harmonizer be used or even dividers. I know semi tones might be hard, but at least oscillator count could be lessoned? Just a thought,

Later then, BobF.....

[rewiredrecords]

If anyone is still stuck with the MIDI Keyboard thing I managed to get it working by copying one of the text prim's with the 5 rows of 127, and plugging it into the HiKey on the Multi to MultiVoice.

Couldn't work out how to post a pic but here's a link to a screenshot
https://www.dropbox.com/s/4vfuvu4wz0ye8s4/MIDI%20keyboard%20working.png?dl=0