polyphony cpu considerations
Say you want to have 6 of the same monophonic synths of medium to heavy cpu use each having:
- 2 oscs
- 2 filter
- 4 env/lfo
- 1 sequencer
- 2 delays (yes, I want each of the 6 to have 2 delays)
- A LOT of vcas, modulation operators etc.
now, the somewhat special thing is that there is one global voice that is exactly the same but, next to being a voice its modulation sources can also can modulate all the 6 voices.
If core had voice access I'd make a 7 voice polyphony.
As I see it there are two ways: (I'm leaning to A but there might be problems)
A: Single poly corecell
- copy the global voice to any of the single voices. You'd have to calculate 12 voices that way
- benefit: way simpler structure on the primary level
- problems: cpu. deviation in the global voice per channel?*
B: One poly, one mono corecell
- send all the modulators ("CV" and audio) from the mono to the poly corecell
- benefit: cpu
- problems: I like structures to be extensible. even in the proposed example there would be a lot of modulation signals which would have to be sent over the primary level. Solution would be to iterate through the modulation array in the mono cell at any audio sample clock and send all the signals through a /$ bus. But that might be an even bigger cpu hog. When I tried it the CPU meter of Reaktor stayed low but the CPU meter of my OS went up a lot.
*: now, A would be much simpler but there is the question when I copy the global voice to all the others, would the voices deviate from each other? Is there some kind of digital drift? What about a random LFO?
CPU wise I'm not sure, I find it hard to build a realistic test ensemble. So any insight is welcome.
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