I’ve read all the posts I can find about the Sin Osc and pitch, and I believe I have a good understanding of how it is meant to function. I just spent the afternoon testing the pitch tracking of all my systems oscillators; two Dixie II+, a Mangrove, Rings and Elements and of course the Sin Osc on the ER-301. I was using a quantized CV output on a Varigate 8+ as my CV source connected to the V/Oct input of each sound source. All tested perfectly except for the Sin Osc on the ER-301 on which I noticed two problems.
The first issue I noticed is that my Sin Osc seems to be a bit sharp from what f0 says should be the baseline when 0V is applied to the V/Oct input. For example, with f0 set to the default 27.5 Hz (which is an A) my O’Tool + reads the output as a 27.993 Hz, so off by over 400 cents.
The second, and more concerning to me, is that the Sin Osc did not track 1V/Oct for me. For example, with f0 set to 32.7 Hz at 0V input, then at 1V input which should be one octave up, I was seeing 89.872 Hz (on the cusp of F/F#) instead of the expected 65.4 Hz ©.
I feel like I have a good handle on this (I’m an electrical engineer) but maybe I’m doing something wrong.
Anyone else seeing the Sin Osc not tracking 1V/Oct?