Does anyone have a good (engineering level) understanding on how the auto tune works on the OB-X? I have one OSC on one voice that is getting a strange auto-tune control voltage causing it to be out of tune. After swaping around op-amps to no avail, my next guess is a bad cap supporting the voltage at the op-amp. However, I don't understand what goes on during an auto-tune. I assume it compares the OSC frequency to a reference signal. I don't understand who the comparison in made, or how the software turns off voices, gates the voice, etc... Thoughts? Thanks.
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OB-X auto tune
2009-10-15 by nelsonj_sce