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<TITLE>RE: [sdiy] filters with independent resonance 'location'</TITLE>
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<P><FONT SIZE=2>Interesting - Yeah, you do always see resonant peaks at the cutoff freq. (ie. <A HREF="http://www.doepfer.de/a100_man/a120_d2.gif" TARGET="_blank">http://www.doepfer.de/a100_man/a120_d2.gif</A>). I bet two cascaded resonant filters or a parametric EQ before a filter would give you that effect - unfortunately, I don't have a scope to verify. Interested to hear what others have to say.</FONT></P>
<P><FONT SIZE=2>JP</FONT>
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<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: Jeffrey Pontius [<A HREF="mailto:jpont@stat.ksu.edu">mailto:jpont@stat.ksu.edu</A>]</FONT>
<BR><FONT SIZE=2>Sent: Tuesday, September 25, 2001 8:56 AM</FONT>
<BR><FONT SIZE=2>To: synth-diy@dropmix.xs4all.nl</FONT>
<BR><FONT SIZE=2>Subject: [sdiy] filters with independent resonance 'location'</FONT>
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<P><FONT SIZE=2>In general, a typical lowpass or highpass filter has the resonance set</FONT>
<BR><FONT SIZE=2>around the cutoff frequency. Are there filters available, and if not</FONT>
<BR><FONT SIZE=2>available could one be reasonable constructed, that would allow the</FONT>
<BR><FONT SIZE=2>resonance 'location' to be set independently of the cutoff frequency?</FONT>
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<P><FONT SIZE=2>This is certainly not a new idea, but I have not seen or read about such a</FONT>
<BR><FONT SIZE=2>filter.</FONT>
<BR><FONT SIZE=2>Thanks, Jeff</FONT>
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