Airwindows

Holt2

TL;DW: Holt2 is a bass-cab-like resonant lowpass filter.

Holt2 extends what I did with Holt, to produce an astonishing effect like Aura for bass.

How is this? Simple: Holt is a method you can use in Excel for predicting sales figures based on trends. It basically uses two variables each of which chase each other to try and cut through the noise of realworld data and produce useful predictive results. My friend from the livestream thought it might make a lowpass that was more fuzzy in tonality. It did not do that thing.

Instead, I got something like a low-frequency version of Aura: a resonant lowpass like a synth filter with huge control over the extreme lows. I had to do weird things to get it to track fairly consistently over different resonance settings, because the Holt method doesn’t really have anything like that at all: turning it into a synth filter is strictly my deal. So is the multipole arrangement: this thing morphs seamlessly from no poles (dry) to eight poles (48 dB per octave) with intense resonance or no resonance at all, based on how you set it.

The changes from the original Holt are, it’s got more poles of filtering, and no longer has the Spiral soft-clip built in. So, if you’re incautious with this it might blow stuff up real good. It won’t quite self-resonate but it sure throws out a lot of resonance, which is sometimes just the ticket for making amplike tones out of beefy sounds.

I’m going to be using this as a go-to bass sound, which makes use of DI bass immediately less studio-y. It’ll also handle automation nicely (except the Poles control doesn’t like to be automated) opening up modern electronic music effects on what might seem like a set-and-forget bass amp. But since there’s the dry/wet control, you might also find Holt2 just the ticket for taking guitar sounds (either real or plugin) and throwing thunderous cab weight behind them. Dial in the desired huge rumbling low-end, and then go all dry, crank the output level and sneak in just enough of the super-lows to expand your guitar tone. It might also find other uses: let me know if anything really clicks for you!

download StarterKit.zip for just the basics
download 64 Bit Windows VSTs.zip
download Signed M1/Intel Mac AUs.dmg
download Signed M1/Intel Mac VSTs.dmg
download LinuxVSTs.zip
download LinuxARMVSTs.zip for the Pi
download Retro 32 Bit Windows VSTs.zip
download Retro PPC/32/64 Mac AUs.zip
download Retro PPC/32/64 Mac VSTs.zip
Mediafire Backup of all downloads
All this is free and open source under the MIT license, brought to you by my Patreon.

Date October 30, 2022
Author Chris
Comments No Comments

Console8 Updates (and more!)

Hi! If you’re using these plugins, especially on VST, you might want to update them!

Console8.zip(4M)
Console8Hype.zip(2M)
Monitoring3.zip(673k)
PurestWarm2.zip(613k)
Shape.zip(622k)

This is what I’ve been doing for the last couple weeks. It’s always a little like trying to sprint and falling down and spraining your ankle to hit a major bugfix scenario, but this hopefully straightens things out and allows me to return to plugin-making and releasing the cool stuff I’ve got in the pipeline.

So what happened? All these plugins share an experiment I did with PurestWarm and continued with Shape, looking to test it out before trying it in Console8. Turns out the experiment failed, but in such a way that it wasn’t immediately obvious until folks started measuring things. The plugins use an ultrasonic filter (or in Monitoring3’s case, define how Dark works) and since it’s a fixed filter, they try to set up how the filter works in ‘reset’, just once when the whole plugin is created for the first time in your DAW.

In doing that, they use a thing called getSampleRate. You would expect that if getSampleRate() returned a garbage value like ‘zero. zero samples per second. Have a nice day!’ then the plugin would crash or otherwise not get through testing… but these plugins ALSO do a thing where if you’re not running at high sample rate, they switch the filtering off, because it’s not useful running at 44.k or 48k: not enough room to suppress aliasing at those sample rates.

And if the plugin is asking ‘are you under 49 kilohertz in sampling rate?’ and the DAW is apparently saying ‘why yes, I have zero kilohertz! I killed all the hertz! ahahaha!’ and will only give the real value when the plugin actually runs and processes stuff… well then, zero is less than 49k, isn’t it? If the plugin asked ‘oh BTW are you 44.1k or 48k?’ it would’ve figured out something was wrong, but instead they happily just said ‘yeah we’re at low sample rate, don’t run the filter’ on ALL VST PLUGINS no matter what sample rate you were at.

And this affected my mixdown of my track Skronk, and I never knew it.

So now it’s fixed. Please re-download the plugins above (or get the collections of plugins below) and Console8 will use its ultrasonic filtering properly, which it wasn’t on VST.

You might think since it’s ‘ultrasonic filtering’ there would be no change in sound. Uh no :) the point is to suppress aliasing. I think you’ll find it DOES change the sound and make it what it was always meant to be, which also means if you need to recall stuff done in the last couple months and MUST have it be the same, you’ll need access to the original releases (this is an ‘update in place’ so you should replace your old plugins with the new ones and they’ll just automatically work with no changes to your stuff). So, if you go to those plugins’ pages on airwindows.com you’ll find, at the bottom of the post, a link to the original version still downloadable. In every case it’ll be, for instance, Console8original.zip(4M) with the word ‘original’, in lowercase, appended to the zip name.

I would suggest trying the updated version to see if you just like it better, though. I was using the VSTs because on Mac Reaper they’ll run a double precision buss and get slightly more of the sound I want from them. And the update, I think, was very helpful in doing that.

download StarterKit.zip for just the basics
download 64 Bit Windows VSTs.zip
download Signed M1/Intel Mac AUs.dmg
download Signed M1/Intel Mac VSTs.dmg
download LinuxVSTs.zip
download LinuxARMVSTs.zip for the Pi
download Retro 32 Bit Windows VSTs.zip
download Retro PPC/32/64 Mac AUs.zip
download Retro PPC/32/64 Mac VSTs.zip
Mediafire Backup of all downloads
All this is free and open source under the MIT license, brought to you by my Patreon.

Date October 23, 2022
Author Chris
Comments 7 Comments

Exciter

TL;DW: Exciter is an Aural Exciter plugin that can be both subtle and extreme.

Exciter.zip(614k)

This plugin isn’t my usual jam, but I’ve been listening to this type of effect all my life. The Steely Dan album ‘The Royal Scam’ wouldn’t be the same without the Exciter effect. And now it’s a free Airwindows plugin!

Note that this is NOT a clone of hardware, or any particular brand. As I usually do, I’ve extracted the guts of the effect and then adapted it so it can be used normally or exaggerated. You’ll find that as you apply the effect, it’ll start off sounding like it does nothing, gets more and more intense and then suddenly blows up into crazy distortion. To use it like a normal exciter, fine-tune it so that it’s just barely making transients ‘pop’. If you’re hearing obvious crunch, you’ve already got it cranked up higher than real-world examples would let you do.

The effect works like this: get a sharp band filter going to extract certain kinds of information. Distort it with a soft clip (I use a sin() function, and some real-world examples used a 4049 hex inverter chip, which does a very similar super soft distort when used as an audio effect: it’s the chip that made up Craig Anderton’s ‘Tube Sound Fuzz’ circuit back in the day, and I still have lots of these chips to play with :D ) Then, once you’ve distorted this bandpass, add just only the distortion elements back into the full bandwidth signal, by subtracting the bandpass again.

Exciter lets you adjust the frequency you’re using, and dial in the amount of effect you want. I’m pretty sure it’ll consistently sound good (not quite natural, but this is ‘late seventies heightened detail’ tone here, it doesn’t have to sound natural) if you’re careful to not crank it too much. And of course this is Airwindows, you can crank it on stuff that doesn’t have much to excite, and blast it on bright stuff to make a distinct form of gritty evil distortion for effect.

A lot of the stuff I like in analog is when transistors and chips are misused and freaking out. You can get tones like that out of Exciter, if you like. You can put it in the middle of uLaw, if you like. I’ve not tried that so you can be the first. I hope you enjoy Exciter :)

download StarterKit.zip for just the basics
download 64 Bit Windows VSTs.zip
download Signed M1/Intel Mac AUs.dmg
download Signed M1/Intel Mac VSTs.dmg
download LinuxVSTs.zip
download LinuxARMVSTs.zip for the Pi
download Retro 32 Bit Windows VSTs.zip
download Retro PPC/32/64 Mac AUs.zip
download Retro PPC/32/64 Mac VSTs.zip
Mediafire Backup of all downloads
All this is free and open source under the MIT license, brought to you by my Patreon.

Date October 10, 2022
Author Chris
Comments 5 Comments

ZRegion2 (and ZRegion)

TL;DW: ZRegion2 is an Emu e6400 style Airwindows Region filter, with coefficient smoothing.

ZRegion2.zip(667k)
ZRegion.zip(657k)

Here’s one I might be needing in future, so I’m putting it out for everybody to have!

The Airwindows Z series filters are kinds of digital filtering, with sampler hardware emulation put on ’em for added color and vividness, plus a staggering capacity for gain (folks using the original samplers often internally distorted sound with gain boosts in order to get maximum color out of the Emu filters).

But what if there’s a filter type that didn’t even exist on the original device?

ZRegion is that filter. The original Airwindows Region wasn’t written in the context of an Emu Z emulation, more like just experimentation. It uses the cascading filter stages and distortions in an interesting way: you’re using bandpass filters and distorting them, but Region lets you stagger the bandpass frequencies so that you’re successively distorting through series of different filters. A bit hard to explain, but it lets you distort on midrangey frequencies and soften into the bass, or start out with bass clipping and then exaggerate that effect with higher frequencies.

The reason I might be needing this one is, I can get pretty killer bass tones using it. I’ll set the first filter higher for midrange articulation, set the last filter very low for heavy bass mojo, and it’s instantly a bass-amp type of sound. And if I intend to leave the setting as a fixed setting, ZRegion will give me that with the same flavor as my other Z filters.

But if I want to automate or move the controls as part of the mix…

ZRegion2 comes out at the same time as ZRegion, but note that I’m still putting out ZRegion. This is because ZRegion will always run at lower CPU than ZRegion2, because the first plugin doesn’t do coefficient smoothing. It’s for if you have a fixed tone setting to use, OR if you want to have a slight glitchy/zipper-noise quality on some audio and you’re moving the controls.

If you’re going for automation, the Z2 filters are the ones that interpolate the coefficients across the sample buffer, meaning they’ll make control changes smooth. No crackling! This eats more CPU, but a lot of the fun with these filters comes from actively manipulating them. The original sampler never had a Region filter type, but now you can make believe it did, and produce aggressive and textural bandpass-y effects across a broader range than the original sampler’s ZBandpass. Hope you like it!

download StarterKit.zip for just the basics
download 64 Bit Windows VSTs.zip
download Signed M1/Intel Mac AUs.dmg
download Signed M1/Intel Mac VSTs.dmg
download LinuxVSTs.zip
download LinuxARMVSTs.zip for the Pi
download Retro 32 Bit Windows VSTs.zip
download Retro PPC/32/64 Mac AUs.zip
download Retro PPC/32/64 Mac VSTs.zip
Mediafire Backup of all downloads
All this is free and open source under the MIT license, brought to you by my Patreon.

Date October 2, 2022
Author Chris
Comments 3 Comments

Chris

Holt2

Console8 Updates (and more!)

Exciter

ZRegion2 (and ZRegion)

handsewn bespoke digital audio

Kinds Of Things

The Last Year

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