In the MIDI effect, with a default “Root Note” value of 60, Middle C (C4) outputs 0.00V, and other C values are in tune at -1.00V, -2.00V, +1.00V, +2.00V, +3.00V like I expect. (I’m measuring the voltage with an oscilloscope)
If I attempt to transpose the track up or down by some number of octaves by changing the Root Note from 60 to other multiples of 12, I expect Hermod to output voltages that are exact multiples of 1 (no decimal places) for various C notes, eg. 1.00. However, I’m seeing voltages that are substantially different, eg. 0.95, 1.06, which results in some very out-of-tune synths:
In practice, what this means is that in order to transpose up 2 octaves, I need to set Root Note to 85 (not 84) and Fine Tune to 60 (!) and I need to use a scope or a tuner to do it, because I have no idea what the drift is going to be. I feel like I should just be able to set Root Note to 84 and not adjust Fine Tune at all.
I’m seeing this behavior on multiple tracks. Here’s a different track:
- With a Root Note of 60, some tracks output non-exact voltages, which is easy enough to adjust with the “Fine Tune” setting
- In the online manual it’s called “Root Note” but in my Hermod (fw 1.30) it’s called “Root Note 0V”
Is anyone else seeing this?
I’m also going to file this as a bug report.