Stygian Abyss wrote: ↑06 Aug 2020
Many thanks to all the contributors for the nice info and music in this thread.
Can someone answer this question: if I use the mod matrix in to apply note CV to the sequencer value just like Artotaku does in his recent complex arpeggios example, and have the sequencer rotaries set to their default position (50, middle), what values should I set for CV amount in the mod matrix and in the quantizer if I want PSQ-1684 to output the same note CV value it received ?
Let´s keep the quantizer out for a moment.
I think the math is CV Mod Matrix Amount = (Note CV In - S1 Value) * 1.27 which means the amount value needs to change dynamically depending on the CV Input Note. You cannot have a static value except you would modulate the amount itself by a dynamic value coming from a differnt mod source.
Example:
Your input Note is C3 which is 60 in CV.
The S1 Value at 50 is a D#3 which is 64 in CV.
CV Mod Matrix Amount = (60 - 64) * 1.27 = -5
So you have to set -5 as mod matrix amount to get C3 as the output again.
If you have one octave higher as input (C4) the mod amount needs to be higher.
Merging two CV values adds them up.
Another problem is that a Note as CV value is a value range, e. g. 60 and 61 is both C3, so there is also some rounding involved (internally Reason calculates with -1.0 to 1.0 or 0.0 to 1.0 floating point).
Why factor 1.27?
Because CV Mod Matrix Amount can only be set to max 100 and not 127 but Note values range from 0 to 127. So thats why you need to have the factor to get the mod amount.
I don´t know if the formula is 100 % correct but by testing with PSQ it nearly matches the values with some round up or down.