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<DIV dir=ltr align=left><SPAN class=537522201-12102016><FONT color=#0000ff
size=2 face=Arial>It seems to me (and, bear in mind that I know nothing about
DCOs) that one could use a standard VCO circuit to control the current to an
integrator, and use a digital circuit for the reset. In this way, the only
"tracking error" would be a slight loss of amplitude at high frequencies, and FM
would still distort the slope.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=537522201-12102016><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=537522201-12102016><FONT color=#0000ff
size=2 face=Arial>What am I missing?</FONT></SPAN></DIV><BR>
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<FONT size=2 face=Tahoma><B>From:</B> Synth-diy
[mailto:synth-diy-bounces@dropmix.xs4all.nl] <B>On Behalf Of </B>Adam
Inglis<BR><B>Sent:</B> Tuesday, October 11, 2016 5:15 PM<BR><B>To:</B>
synth-diy DIY<BR><B>Subject:</B> Re: [sdiy] How DCOs work<BR></FONT><BR></DIV>
<DIV></DIV><BR>
<DIV>
<BLOCKQUOTE type="cite">
<DIV>On 11 Oct 2016, at 12:52 AM, Colin f <<A
href="mailto:colin@colinfraser.com">colin@colinfraser.com</A>>
wrote:</DIV><BR class=Apple-interchange-newline>
<DIV><SPAN
style="TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; DISPLAY: inline !important; FONT-FAMILY: Helvetica; WHITE-SPACE: normal; FLOAT: none; LETTER-SPACING: normal; FONT-SIZE: 12px; FONT-WEIGHT: normal; WORD-SPACING: 0px; font-variant-caps: normal; -webkit-text-stroke-width: 0px">straight
ramp for every cycle, where a VCO would have a convex or concave</SPAN><BR
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style="TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; DISPLAY: inline !important; FONT-FAMILY: Helvetica; WHITE-SPACE: normal; FLOAT: none; LETTER-SPACING: normal; FONT-SIZE: 12px; FONT-WEIGHT: normal; WORD-SPACING: 0px; font-variant-caps: normal; -webkit-text-stroke-width: 0px">ramp
shape dependent on the direction of pitch
modulation.</SPAN></DIV></BLOCKQUOTE></DIV><BR>
<DIV>This is really interesting. I’d never thought about it like that - so
frequency modulation distorts the waveform in a VCO but not in a
DCO. </DIV>
<DIV>What is the audible difference?</DIV>
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<DIV>(I just know someone is going to use the c- word -- character!)</DIV>
<DIV><BR></DIV>
<DIV>AI</DIV>
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