Mathematically come up with EQ frequencies for specific notes

[joule]

You can check out the tuned devices. There is a keytracked filter there.

[2.7] More Tuned Devices!

Here is a Renoise 2.7 .XRNS file that demonstrates some other tuned native devices: 7629 dblue-tuned-devices.xrns The following devices are included: Flanger, Ringmod, Filter, Lofi, Comb Filter, Chorus, Phaser What I mean by ‘tuned’ is that their frequency or delay times have been programmed to respond to the notes you play, by connecting a Key-Tracking Device to a carefully created custom LFO Device which in turn controls the tuning. In my example I’m using noise (either a quick burst or a…

TheBellows and ZeroFly seem to have tuned the EQ as well. [2.7] More Tuned Devices! - #63 by TheBellows

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