Airwindows Biquad: Mac/Windows/Linux AU/VST

What's a biquad, you ask? The Airwindows biquad uses four of the six common biquad options (I prefer to do shelves with subtractive/additive use of filtered audio). The top control has settings one through four. They go lowpass, highpass, bandpass and notch. That's what I consider the platonic set of biquads, and it lets the filter design be simple and clear. You can set a frequency (in 'amount of the audio range') from 'zero' to 'one'. There'll be EQs with more specific frequencies, that's easy, but this is proof of concept and to be used by ear, plus it will always cover DC to Nyquist at any sample rate. Zero is not really DC, because that kills the biquad: also, One is not really the Nyquist frequency (half the sample rate) for the same reason. But, they act a lot like they range that far, because the high resolution lets Biquad calculate things accurately even that far out of the normal range. http://www.airwindows.com/biquad https://www.patreon.com/airwindows Please DISlike and subscribe! It's an experiment I want to try. It won't hurt me really, and I want to see what happens :)