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Airwindows is one guy: me! I am an audio hacker and computer programmer from way back. I seek only to continue my life up here in Vermont, inventing things and putting them onto the internet, sometimes for free and sometimes for pay. My hope is that people richer than me (i.e. most people) don't rob me. My other hope is for another cup of Aeropress. One out of two ain't bad!

ElectroHat (revised!)

ElectroHatDemo is a universal binary Audio Unit plugin on a mission: it intends to take the place of samples and vintage drum machines, turning any old rhythmic sound into a crisp synthetic and very electronic hi-hat! It’s been revised to work more elegantly with 88.2 and 96K sessions, and the tone’s been adjusted so it doesn’t keep on getting louder right up to the Nyquist frequency. Instead, it gives a warmer tone that’s still insanely bright and crisp, but acts like a hardware beatbox rather than a softsynth.

It will also do a decent snare if you like bright 606-style snares (look into Noise if you’re interested in something darker). The real heart of ElectroHat, however, is the hi-hats. This plugin gives you a huge variety (literally, 3000) of synthetic hat sounds each of which are adjustable for extra brightness. Pick between Syn Hat, Electro Hat, and Dense Hat and use the Trim to dial in the sound—pay attention to the nodes where the algorithm gets weird, as those can produce unique percussive sounds too—and use Brighten to control just how trebly the hat will be. Output Pad starts you off with a nicely attenuated volume. Don’t crank your hat too hard, it’s got a ton of sweet top end that should be treated with respect and can cut through any mix without getting in the way!

If you have trouble getting a track or software instrument trigger to work with ElectroHat, remember that you want to be feeding it the volume envelope of a hi-hat, as a source sound. For soft-attacked things you may want to increase the definition of the stick attack. Do that by using the free DigitalBlack2 plugin to gate your guide sound (route a sound to an aux to process it without altering the original tone if it’s audible in your mix) and then use the free Point transient designer plugin to add ‘pop’ to the attack. The video will show you how to do that, on even a muted synth bass playing psytrance 16ths! If you don’t like the way ElectroHat extends right up into the supersonic range, you can use the free Slew2 plugin to whack off the very top to your taste. This one takes amazing advantage of the broad range of Airwindows freebies to extend its usefulness.

Why trigger from audio tracks, rather than sequence stuff in DAW MIDI and softsynths? Because if your audio track is tighter than DAW MIDI because it’s recorded off a synth or drumkit using hardware sequencing (an analog drum machine, a vintage 808, an Atari computer, my Kawai Q-80 sequencer) then ElectroHat will be triggered off that tighter-than-DAW recording. DAWs hiccup at times, don’t always trigger stuff as perfectly as we’d like. ElectroHat can hit with sub-sample accuracy if the underlying track has that. There’s nothing else that can produce an ‘organic’, evolving hihat tone that is also totally electronic-sounding for modern music and tracks the groove that tightly. You can use this capacity to ‘sequence’ all kinds of things using just delays and echos from a simple guide track, all with hardware-sequencer tightness—the video shows you that, too.

ElectroHat can be the new go-to electronic sizzle! Its tones have huge variation within a range of crisp and bright synthetic tonalities with more character and smoothness than simple noise, it sounds a world apart from even round-robined sample triggering, and best of all it can groove like hardware because it literally inherits the exact timing of whatever you’re driving it with! Whether that’s recordings of a classic groovebox, or just you slapping your pant leg and micing it, the groove is perfect: and nothing is more important.

ElectroHat is $50.

Airwindows On (Mac) Pro Tools!

Every now and then you run across something that tells you: hey! You’re not alone, there are others who see things as you do!

For years now, I’ve been developing Audio Units, just the audio code. That way they always work and won’t break, and I can focus my attention on the sound. I always figured that someday, if people wanted it, someone (perhaps a DAW manufacturer) would work out how to skin the things for those who like knobs. Didn’t concern me, so I kept on caring only about the sound (and about improving things for my customers, getting them free updates, all kinds of stuff like that).

I was a little concerned about the way that Audio Units only worked in Logic… and Digital Performer… and Ableton Live… and Reaper… well, you get the idea. But there were two glaring omissions, Cubase and everyone’s favorite nemesis Pro Tools. And I am not the guy to make and maintain ports to platforms I can’t afford to develop for and don’t really understand. It’d be a recipe for just struggling and stopping, and that wasn’t okay.

Well, I’ve got a little announcement. It comes in two parts. First… Read More


NonlinearSpaceDemo is a universal binary Audio Unit plugin for algorithmic reverb. It extends on what its predecessor Space offered, by adding Nonlin behavior in two ways!

You’ve got a Sample Rate control that sets the overall size of the reverb tank. This isn’t meant to be switched while the reverb is live, so if there’s a problem bypass it and turn it back on: it should be OK.

There are Treble and Bass controls, which are not simply EQ on the output of the reverb: they tie into the guts of the reverb shaping the sound as it continues, so you can get many different reverb tonalities. The Treble is particularly good at setting reverb sounds into the distance, but even at full crank NonlinearSpace is very deep: compare it with other algorithmic reverbs. It has a character all its own, and now…

With the Nonlin control, you can do dial-an-eighties, or crazy unique things! This is a behavior normally found in isolated reverb algorithms, but I found ways to put it on a continuum. If you keep the liveness very low and ADD Nonlin, you get an Airwindows version of the classic gate-y Nonlin reverb sound, ideal for drums and keeping a mix from getting muddy. If you control your input sounds well you can do outrageous things with this! It seems particularly good at tom fills, and all the sounds are shapeable with the Sample Rate option and the Treble and Bass controls. This can be used on synthetic elements, too, not just live instruments!

Then, if you tire of that, try the reverse! Run a sporadic sound into a channel with NonlinearSpace, set Nonlin to -1.0 and crank up the Liveness, crank everything up until you have infinite sustain. What’ll happen is, the extreme Nonlin negative setting will force the output to not get too loud, but if you feed new audio in you’ll replace what was there. This is the ultimate tool for making eternal reverbspaces and ambient washes: if you’re using something like a volume pedal, you can literally paint in new sound as you go, balancing or replacing it on the fly, never getting runaway feedback. And since it’s a continuous control, every setting can be given a touch of nonlinearity just like you’re dialing in the reverb tone, helping you shape the spaces of the mix.

NonlinearSpace, like Space before it, wants to be on a stereo track, the better to fill up the atmosphere behind your mix. If you’re not finding it in the menus, check that you’ve got a stereo track for it to go on.

This is all on top of what was already a damn good sounding algo reverb anyway. Space was already an innovative design with many special Airwindows tricks in things like its comb-filters and allpasses, but NonlinearSpace takes it to a whole new level—and brings everything to the 80-bit processing of the Purest line of Airwindows plugins, which is great for reverb tones that are all made up of subtleties. NonlinearSpace is huge fun, and hugely effective, and I’m just loving it: I hope you do, too.

NonlinearSpace is $50, and people who owned Space get updated to NonlinearSpace for free :)


PurestSquishDemo is a compressor Audio Unit plugin for maximum transparency and organic squishiness! I’ve designed it for the 2-buss, but it’ll work for many things. It’s got two basic modes: you can use it very gently to ‘float’ the mix elements in a barely perceptible way, or you can lean into it harder for more textural effects.

PurestSquish is one of the Purest line of plugins, which means certain things. It doesn’t emulate any known hardware device, it just brings the squishiness and fluidity to the sound while trying very hard not to touch the tone color in ANY other way. These are transparent plugins, be careful about over-applying it just to hear an effect. It also means PurestSquish is implemented using 80-bit math internally, with carefully designed algorithms to apply the effect with as few math operations as possible. This is somewhat controversial as the noise floor of these ‘superfluous math operations’ I’m avoiding is very low, but typical plugins waste a lot of CPU overprocessing. The Purest line is about going the opposite direction, as hard as possible.

Finally, one of the things PurestSquish has is a highpass on the sense circuit for bass. Using this, you can bring hugeness to the lows of the mix. Since it’s just on the sense it’s not in the audio path, but because the compressor ‘turns down’ what’s a gain boost going in, the Bass Bloom control can be used like it was a boost: apply the compressor, and then work in enough Bass Bloom to have a giant low end. This, plus the way PurestSquish preserves textures going through it, makes it a fantastic compressor for cranking up the size and scale of electronic music—or any sort of music, really! But the highpass Bass Bloom stuff comes from EDM.

Shoot this out against any compressor, from Airwindows or otherwise. It really has its own sound, it really is exaggerated as far as squishiness and transparency are concerned, and there is a real usefulness to applying just only the compressedness to a mix. You can get your color or ‘classic tone qualities’ in lots of other ways. PurestSquish is distilled squishiness, concentrated to keep the flavors of your mix pure while it changes the texture.

PurestSquish is $50.


DeEss3Demo is the latest DeEss: returning to the unrivalled sound of the first classic Airwindows DeEss, but with 80-bit internal math and a new Sense Monitoring switch, by request! This is the ultimate De-Esser, now with new ease of use and deeper tone.

This plugin’s made a lot of interesting friends… very competitive, significant friends who seized onto the original DeEss as a secret weapon. It seems that if you really knew what you were doing with the filters and such, you could get the thing to tame sibilance with incredibly little damage to the audio. It took expertise, because there was no metering or monitoring then: you had to be able to hear supersonics and you needed the experience to know what you were aiming for.

The second version tried to simplify the effect and make it more approachable, more a one-size-fits-all effect. This fizzled. Less experienced people weren’t reassured, and the power users weren’t excited about losing functionality, even sticking with the old version (which was updated to 64-bit to ensure everyone could keep it working if they wanted to).

Live and learn! DeEss3 is EXACTLY the first DeEss, right down to some of the quirky behaviors that gave it its tone, but with an 80-bit buss and noise shaping to the 32-bit output word. It actually is better than the first DeEss, in the only way it can be: more accurately reflecting that first algorithm, at higher fidelity. And it’s got a new control that makes it WAY easier for both pros and newbies: use the sense monitor control to adjust your settings, so you can hear exactly what it’s taking out, against a backdrop of impressive silence. That by itself is a powerful argument for just how good DeEss3 is: you can hear how little it touches the rest of the audio.

The video will show you how to work DeEss, so this secret-weapon plugin can finally be less of a mystery. Normal people can use it effectively now!

DeEss3 is $50.


PurestAirDemo is a universal binary Audio Unit plugin for enhancing treble up near the Nyquist limit! It specifically tweaks that sonic area, wherever it is, with special Airwindows algorithms. The idea is to get ‘air band’ boost without the coloration of a normal equalizer, and in line with the Purest style of plugins it’s done with a really simple and elegant algorithm.

There’s also an ‘Air Limit’ control, and what this does is kick the previous control down if the energy gets too high. It’s not properly a de-esser by itself, but it does work to moderate the brightness effect. You can use it without air-band boost, to function as a tone softener.

PurestAir is really clean and maintains the tone quality of what’s passing through it, adding little color of its own. Part of the secret to that is the way it operates relative to the Nyquist limit. What that means is, PurestAir is a different plugin depending on what sample rate you use. If you’re at 44.1K it’ll have the most obvious effect as it’ll be working at around 22K. If you’re at 48K, it’ll center on 24K and so on. Still functional at 96K (with a boost at 48K but some effect in the audio band), probably no longer useful on 192K. Be aware that this isn’t a normal EQ algorithm and is dependent on your sample rate.

PurestAir is $50.


Pressure3 is my second try at improving Pressure, an early compressor plugin of mysterious power. It took me many years to learn the secrets of Pressure. I started to work it out when I developed PurestDrive and saw what happened when a plugin’s sonic payload was delivered in a single multiply to the otherwise untouched input data word. And I’d developed techniques like an internal 80-bit audio buss, and noise shaping to return that to the 32-bit CoreAudio buss…

Pressure3 brings all those improvements to the tone while leaving the ‘magic’ compression behavior totally unaltered from the original. It’s well worth checking out, and as with Pressure before it, it’s free.

But there’s more! Unlike the original, this one has a video demo! If the weird behavior of excessive Speed or the strange ‘µ-iness’ control have left you wondering, now there’s a video demo where these things are explained. It might take a little mind-stretching to wrap your head around a control that fades from squashy Fairchild to punchy New York parallel compression (while not being exactly either), but it’s well worth doing. And as with the best of my freebies, Pressure3 is absolutely as good tone-wise as any of the for-pay plugins, not compromised in any way. The idea is that you might find other things to also want, it’s not to make you compelled to ante up in order to get the ‘real tone’. Pressure3 is as real as they come, in its peculiar way.

Hope you like it!


Channel4 is the Purest version of this ever-popular plugin, still free, better than ever, and with all the latest improvements! It’s still 64/32/PPC as far as what it can run on. It’s 80-bit internally like PurestDrive and PurestGain and the latest Console. It’s got the noise shaping to the 32-bit CoreAudio buss, and it has been simplified back to the original Console’s pureness of algorithm (no more tricky antialiasing schemes) except that it keeps the fix for the selector switch so you can use all the variations!

Channel4 works in three ways. First, there’s a very faint touch of highpassing, reining in the extremes of digital bass to more of what’s practical in analog circuits. This was worked out by measuring impulses from real hardware, but the application is very simple. Then, there’s a slew clipper that restricts the slew rate of the plugin. Lastly, there’s the same type of saturation present in Density, but applied in the simplest way, and then blended with the input signal as dry/wet—which means the curve becomes gentler and gentler as you saturate less. It’s this super-gentle saturation curve that people loved in Channel.

Have a good holiday! I’ll have more things coming, I’ve been busy in my little workshop! :)


AORKit is an EXS24 sampler instrument that’s designed to work with Airwindows Console. Each sample has ConsoleChannel already applied, which makes all of EXS24 including the filters and effects run ‘inside’ Console. If you run it at unity gain with no extra ConsoleChannel on there, you get a blend between samples unlike normal sampler instruments, plus a better sound out of the filter and effect processing.

AORKit is the most practical of the EXS24 Console Kits, with useful sounds and the least in digital artifacts. It’s got a damped snare and a more open, ringy snare, and a good solid punchy kick. It can still be manipulated in all the ways available to the others. Check out the video for more.

If this helps you, support Airwindows 32 Bar And Grill by paying $10 with the blue button below. If not, delete it. If you want others to try it, don’t torrent the stuff, send people here!


CrispKit is an EXS24 sampler instrument that’s designed to work with Airwindows Console. Each sample has ConsoleChannel already applied, which makes all of EXS24 including the filters and effects run ‘inside’ Console. If you run it at unity gain with no extra ConsoleChannel on there, you get a blend between samples unlike normal sampler instruments, plus a better sound out of the filter and effect processing.

CrispKit’s got tons of very pointy sounds, sparkly Paiste cymbals, and of the kits from this era it’s one of the two most cleanly recorded: that means there’s less digital artifacts in there. It’s not perfect—the EXS filters can be used to adjust that. Check out the video for more.

If this helps you, support Airwindows 32 Bar And Grill by paying $10 with the blue button below. If not, delete it. If you want others to try it, don’t torrent the stuff, send people here!

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