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<DIV><SPAN class=889451322-03012004><FONT face=Arial color=#0000ff
size=2>JB,</FONT></SPAN></DIV>
<DIV><SPAN class=889451322-03012004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=889451322-03012004><FONT face=Arial color=#0000ff
size=2>With the Steiner filter adding VC Q may not be as trivial as other
filters. Just depends on how you want it to operate. With most filters you just
control the amount of feedback. With the Steiner filter you are doing this by
controlling the filter output amplitude. If you look at the original paper from
Nyle Steiner you see ~30db amplitude change when changing the Q. This is a
fairly considerable change in output so you may want to put some sort of
compensation on the output to adjust the output according to the
Q.</FONT></SPAN></DIV>
<DIV><SPAN class=889451322-03012004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=889451322-03012004><FONT face=Arial color=#0000ff size=2>You
can find the original paper at:</FONT></SPAN></DIV>
<DIV><SPAN class=889451322-03012004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=889451322-03012004><FONT face=Arial color=#0000ff size=2><A
href="http://www-timc.imag.fr/Yves.Usson/personnel/SDIY/archives/">http://www-timc.imag.fr/Yves.Usson/personnel/SDIY/archives/</A></FONT></SPAN></DIV>
<DIV><SPAN class=889451322-03012004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=889451322-03012004><FONT face=Arial color=#0000ff size=2>Happy
filtering.</FONT></SPAN></DIV>
<DIV><SPAN class=889451322-03012004><FONT face=Arial color=#0000ff
size=2>Jay</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B>
owner-synth-diy@dropmix.xs4all.nl
[mailto:owner-synth-diy@dropmix.xs4all.nl]<B>On Behalf Of
</B>jbv<BR><B>Sent:</B> Friday, January 02, 2004 4:11 AM<BR><B>To:</B>
synth-diy@dropmix.xs4all.nl<BR><B>Subject:</B> Re: [sdiy]
Filters<BR><BR></FONT></DIV>Hi, and Happy New Year to everyone,
<P>Is there a (easy) way to modify this VC-BPF design : <BR><A
href="http://www.cgs.synth.net/modules/cgs35_syntha_vcf.html">http://www.cgs.synth.net/modules/cgs35_syntha_vcf.html</A>
<BR>to add VC-Q to it ?
<P>Or to modify this one : <BR><A
href="http://www.cgs.synth.net/modules/cgs30_bpf.html">http://www.cgs.synth.net/modules/cgs30_bpf.html</A>
<BR>to have VC-F and VC-Q ?
<P>Thanks, <BR>JB <BR><A
href="http://www.cgs.synth.net/modules/cgs35_syntha_vcf.html"></A>
</P></BLOCKQUOTE></BODY></HTML>