Man, I always have problems tuning the scale on VCOs.
I can't seem to tweak the scale trim so the frequency is exactly double across an octave.
I have a MIDI keyboard plugged in while I am trying to do this. Where should I start.. I can set both pots to near center, tune middle C, then try to adjust the scale to match the pitch an octave higher.. but I just can't get it.
Anyone else have this problem? Any further tips?
-troy
Tuning the scale.
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- controlvoltage
- Posts: 242
- Joined: Tue Aug 09, 2005 12:17 am
Well I was using a strobe tuner...which might or might not be easier than doing it by ear... but when I couldn't get it dialed in in the normal method, I did it backwards.... using the scaling trimmer to get my low note and the osc pitch trimmer to dial in the octave. Or maybe I was doing it backward the first time.
Anyway, I guess my point is to try it both ways in case one is easier than the other. Also make sure that it has been on for a few minutes and is in a temperature-stable (not drafty or under a heat vent) environment, it will make it a little easier I suspect.
Anyway, I guess my point is to try it both ways in case one is easier than the other. Also make sure that it has been on for a few minutes and is in a temperature-stable (not drafty or under a heat vent) environment, it will make it a little easier I suspect.
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- Posts: 186
- Joined: Sun Jun 19, 2005 8:51 pm
Patience and a steady hand are your main tools here. Remember that this is a bassline synth and should probably be centered around C1 (lower C on the keyboard). Tune this up first then adjust the width setting and then repeat the process if needed. It took me a couple tries to get it right. IMHO the width of the octave is more important than the tune of the osc.
Please be positive and constructive with your questions and comments.