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??
Reviving this thread to check in! The pitch over hz/volt to my “new” CS-15 is working perfectly–so maybe that’s been fixed since the last post—but I’m struggling to get the envelopes to trigger how I want. They seem to be triggering on note OFF more frequently than note ON. Anyone else using a H+/CS-15 combo having more success than I am? teach me your secrets pls! The expectation that H+ could be the front end to my CS-15 for MIDI control was a big part of why I took the plunge on a CS-15!
oh man, in case it’s helpful to anyone else, i found the answer: apparently the cs-15 like some other older synths needs a trigger of the type “s trig” rather than the modern “v trig.” some sequencers can do this by default but for those that can’t, the options are:
make or buy a converter cable that turns v trigs into s trigs - i will probably try making this, parts are cheap - or
send the gate signal into the external sound input rather than the trig input, and adjust the sensitivity level to the proper sensitivity. i’m doing this right now and it works perfectly. the only limitation is that you can’t trigger the two cs-15 envelopes individually, you can only trigger env 1. that’s fine for me for now but that’s why i plan to make the conversion cables at some point.
hope this helps anyone who finds this thread in the future!
