[sdiy] MIDM-CV DACs, Part #3 (last)

[jorgen.bergfors at idg.se]

Although this theoretical discussion probably is correct, in reality a 12
bit DAC is more than enough.
I have built the Oakley MidiDAC, which I believe is based on a 12 bit DAC.
I have measured every single midi note value with a 4 1/2 digit DVM. The
accurracy is way better than you could dream of tuning a piano or guitar,
for instance.
Also the the drift is neglible. I tuned my VCOs against a digital synth.
Then I turned everything off The next day, after a warm-up period, the VCOs
were still perfectly in tune with the digital synth (more than a second
"beating time"). No knobs were touched in the meantime.
Actually, this is my normal way of working. I just turn everything off, and
continue working on the same project another day. I never have to retune,
as long as I'm using the same patch. I retune only when I do the final
recording, just to make sure.

/Jorgen

http://hem.bredband.net/bersyn/