Hi Dan, I had a crack based on Joe's and used this solver with your data to get a close-enough polynomial for expr:
http://www.arachnoid.com/polysolve/ Cheers, Chris. On 23/10/14 06:16, Joe White wrote: > Hey Dan, > > Does the attached patch do what you want? It's a bit crude but you get > the same graph output, I suppose you could always smooth the data if you > didn't want it linear as well. > > Cheers, > Joe > > On 22 October 2014 20:22, Jonathan Wilkes via Pd-list > <[email protected] <mailto:[email protected]>> wrote: > > Why not just draw what you want the curve to be in an array? > > -Jonathan > > > On Wednesday, October 22, 2014 2:04 PM, Dan Wilcox > <[email protected] <mailto:[email protected]>> wrote: > > > Howdy all, > > I’m *almost* done with my rjlib compatible s_minimoog abstraction > for the rc-patches, but I need help finding the right curve for the > ADSR controls. I used block diagrams and the Minimoog Service Manual > to build the dsp chain. What I have now can give a *reasonably* > accurate rendition of Minimoog patches from sheets found online (ELP > Aquatarkus, for instance). What I did notice in comparing it to the > Arturia Mini V AudioUnit minimoog simulation, is that the knob > curves for frequency are different form what I’ve been able to do, > so some patches aren’t quite *right* yet. > > Basically, I’ve tried a number of different exponential and power > curves but can’t get one that has the long, low slope on the low > end. All of my curves rise too quickly. In any case, this is a curve > fitting problem and this is the data I’m working with. The mapping I > want is 0 - 1 to 20 0 20kHz. And no, I don’t to just stick a log hsl > in there :D > > Any help would be appreciated so I can get this out there and start > using it! > > posfreq > 0.0000 > 0.12583 > 0.250362 > 0.375456 > 0.500768 > 0.6251750 > 0.7506300 > 0.87512750 > 1.00025000 > > > > > -------- > Dan Wilcox > @danomatika > danomatika.com > robotcowboy.com > > > > > > > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > > > _______________________________________________ > [email protected] <mailto:[email protected]> mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > > > > -- > Follow me on Twitter @diplojocus > > > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > -- http://mccormick.cx/
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