<div dir="ltr"><div>Tom, it was just yesterday that I was going to check your site to see if you had developed a midi to CV device yet.</div><div>Are you aiming to present this as an electric druid product? I hope so!</div><div><br></div><div>Colin<br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Oct 25, 2020 at 10:50 AM Mike Beauchamp <<a href="mailto:list@mikebeauchamp.com">list@mikebeauchamp.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
> HOWEVER…a passive mix doesn’t use a virtual ground node, so there’s the <br>
> potential for bleed through from one channel to another. So I did a <br>
> quick simulation of the situation to see if this was a problem, shown <br>
> attached. U1 takes a 0-4V signal from the Bend DAC and turns it into a <br>
> +/-83mV signal. This is then fed to both mixers. The other mix input <br>
> comes from the appropriate Note DAC, also 0-4V. Each mixer is then <br>
> followed by x4 make-up gain, which compensates fro the /2 loss in the <br>
> mixer and adds an extra x2 to turn the Note CV range into 0-8V and the <br>
> pitch bend range into the standard +/-2 semitones.<br>
<br>
Just wanted to say that pitch bend range isn't standardized to +/- 2 <br>
semitones, although that is a lot of synthesizers' default setting. The <br>
MIDI spec says that it is variable and reconfigurable to +/- 24 <br>
semitones and optionally adjustable by cents. Some other makers of <br>
continuous pitch instruments require even larger ranges, and I think <br>
this is called for in the MPE spec as well.<br>
<br>
Mike<br>
<br>
<br>
<br>
<br>
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</blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><a href="https://www.instagram.com/colinmuirdorward/" target="_blank">https://www.instagram.com/colinmuirdorward/</a></div><div><a href="https://www.instagram.com/colinmuirdorward/" target="_blank">-<br></a></div><div><a href="https://www.instagram.com/ssdp_synthesis/" target="_blank">https://www.instagram.com/ssdp_synthesis/</a></div></div></div></div></div></div></div>