yes, there is a VCF with linear FM cv input. its the onboard VCF in the A111-2 Dynamic vco module.
well, in this VCF, the linear fm input is normalled to the triangle out of the VCO.
but, you can control the fm index via a cv input (that is, the gain cv of a lin. VCA before the linear fm input).


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--- On Sun, 11/23/08, pfichoux < pfichoux@... > wrote:

From: pfichoux < pfichoux@... >
Subject: 1 Re: new ideas for future Doepfer A100 modules! => lin fm VCF
To: Doepfer_a100@yahoogroups.com
Date: Sunday, November 23, 2008, 11:43 PM






1V/oct is a common feature for VCF, although I doubt that filters have
a nice tracking. I wonder if it does exist a VCF with linear fm CV input.


















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