I’m unsure if I’m missing a step or if this functionality is not working properly, but I can’t get the hermod+ to send notes in Hz/V to my MS20.
In the “CV Out” menu I change the Output Standard to Hz/v. What I get is a series of notes that jump drastically over what should be a few semitones, drop back down and repeat.
It’s not the synth - I confirmed this with an oscilloscope.For example, moving up in semitones : 0.38v, 1.89v, 3.49v, -5.14v, -3.01v, -1.11v, 0.9v, 3.04v, etc
I’ve just tested it and the Hz/V feature is only working for notes between C0 and Eb3.
As Hermod+ hardware CV outputs has a range of -5V to +5V, it allows 10 octaves of V/OCTAVE notes, but only 3 octaves of Hz/V notes.
The Hz/V alternative standard is exponential and so it requires a very large range of voltage : to get 10 octaves, the voltage output would be 0V to 1024V !
Maybe it’s easier to understand with figures:
C0 = -5V (V/OCTAVE) = -4V (Hz/V)
C1 = -4V (V/OCTAVE) = -3V (Hz/V)
C2 = -3V (V/OCTAVE) = -1V (Hz/V)
C3 = -2V (V/OCTAVE) = +3V (Hz/V)
C4 = -1V (V/OCTAVE) = OUT OF RANGE (Hz/V)
C5 = 0V (V/OCTAVE) = OUT OF RANGE (Hz/V)
C6 = +1V (V/OCTAVE) = OUT OF RANGE (Hz/V)
C7 = +2V (V/OCTAVE) = OUT OF RANGE (Hz/V)
C8 = +3V (V/OCTAVE) = OUT OF RANGE (Hz/V)
C9 = +4V (V/OCTAVE) = OUT OF RANGE (Hz/V)
C10 = +5V (V/OCTAVE) = OUT OF RANGE (Hz/V)
But indeed, there is an issue with the out-of-range notes, that were transformed to wrong CV output values. It will be fixed in the next OS version!
Has this been fixed in OS 1.31? Trying to send Hz/V to Yamaha CS-15 and it just doesn’t work. When CV output is set to Hz/V, it sends the whole range of 0-5V over one octave (not three as it should be) starring from Ab7 (319 mV) > A7 (697 mV) > Bb7 (1.09 V) > B7 (1.52 V) > C8 (1.97 V) > C#8 (2.44 V) > D8 (2.9 V)…
So its almost 1/2 of a Volt between notes as I test ir with a multimeter… something is definitely wrong here. Seems like bug. I really hope I’m missing something.
Does anyone use Hermod+ in Hz/V mode successfully??
