VA filters

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Posts: 35
Joined: Mon Oct 13, 2014 6:57 am

VA filters

Postby hlrf » Tue Sep 22, 2015 3:55 pm

These are derived directly from codes featured in the book Designing Software Synthesizer Plug-ins in C++ by Will Pirkle.

I skipped the non-linear saturation parts in the path (they sound bad to me) and re-ordered some math to fit Bidule's patching style, it gets real messy in the layouts, so if you want to study the filters, get the book or look at Reaktor. (I don't use it myself but the filters development was associated with an NI developer, search Vadim Zavalishin and his e-book.)

Please make sure the "core" group is running in 1-sample adaptor to get feedback paths right. The outside bunch of math are taken out of the 1-sample group to save cpu usage, I don't really know the maths but am sure they sound reasonable as filters do. XD

About the ladder model, it costs huge cpu on my base i5 and eventually just sound like Bidule's Ladder filter, but you can do fun stuff like by mixing tapped output from the ladder structure. The rest has reasonable cpu usage, though I think they'll do better if coded with SDK.

Edit: I should ask the author before redistribution, the files are taken down
Edit2: Mr. Pirkle kindly approved.
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Last edited by hlrf on Fri Sep 25, 2015 3:56 pm, edited 2 times in total.

Posts: 35
Joined: Mon Oct 13, 2014 6:57 am

Re: VA filters

Postby hlrf » Tue Sep 22, 2015 3:56 pm

ladder ones.
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Location: Brighton, UK

Re: VA filters

Postby boonier » Wed Sep 30, 2015 8:28 am

Cool thanks for these. Will take a look later!

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