[sdiy] Michael Barton?

[Dave Brown]

I did a 5U module for the Barton Dual Quantizer.  I like it a lot.  Details
are on my website at http://modularsynthesis.com/modules/DJB-013/djb013.htm

I replaced an earlier quantizer I had done some time ago.

Dave

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of
eidorian at aladan.net
Sent: Thursday, November 06, 2014 8:11 PM
To: Nicholas Keller
Cc: synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] Michael Barton?

On 2014-11-06 19:26, Nicholas Keller wrote:
> Shame you say the simple quantizers aren't accurate.

In my defense I actually only said they aren't "incredibly accurate"...

As far as I can tell they're good enough for most people (including me), but
I saw comments that there were tracking problems at the extremes of the
output range.  Michael himself pointed out that it's a simple circuit, very
low parts, low cost and not perfect.  I'm quite sure that's why he created
his enhanced "dual nice quantizer", which by all accounts is excellent.  It
uses an MCP4822 D/A converter for better linearity and precision, same as
the one used by a lot of the modern circuits like the hexinverter MIDI2CV
and the MIDIBOX's AOUT (I think).

I found the thread on Muffwigglers where this was discussed: Michael wrote
"My goals for the design were for it to be small, easy to build and have
minimal control so it could be used as a small standalone module or added to
the output of a sequencer. I wasn't trying to compete with Doepfer or any
other manufacturer/designer in having the most features, the largest voltage
range or the most precise accuracy."  His username is "Boogdish" -
http://www.muffwiggler.com/forum/viewtopic.php?t=56585

Bottom line - Michael's stuff is interesting, good and different, check it
out:  http://bartonmusicalcircuits.com/synthstuff.html

Cheers,
A.