Slew2
TL;DW: Limit or wipe out the highest frequencies, near the Nyquist frequency.
Sometimes I just get lucky :)
This plugin is just the anti-aliasing technology I was experimenting with in 2010, applied to Slew, my simple slew clipper. I thought it was going to make the slightly grungy Slew smoother (Slew is a clipper, and can be expected to have clipper-like qualities). That anti-aliasing code was a bit odd. It’s possible I made a mistake somewhere.
If so, I’m keeping it, and now what I invented is out for VST also, and free to all.
Slew2 doesn’t act anything like Slew. What it does, is it puts a particular behavior on the extreme highs. Set to an intermediate value, it’s an acceleration limiter. Cranked all the way up… well, check out the video. It behaves like one of the nodes in Average (also coming to VST) with a 100% cancellation, but the point of total cancellation is also the Nyquist frequency. Slew2 produces a very natural-sounding brickwall filter exactly at that frequency, with the response falling off faster and faster until it’s totally gone when you hit the Nyquist limit (digital sampling theory: at 44.1K (CD quality) it is 22.05K where the treble cuts off).
People are using this for de-essers, and it’s pretty much ideal for any sound that must not be overwhelming in the super highs. The peculiar character of the rolloff means it’s suitable for almost anything because it won’t affect lower treble, and the fact that it’s really a clipper means you can use the slider to set a threshold where, the harder you push Slew2, the more it’ll refuse to let more brightness through. I’ve not tried using it as an acceleration limiter on a mastering lathe, but it could probably do that: which also means if you’re going for classic analog tone, you can just toss this on the 2-buss and use just enough to take excess brightness away. Slew2 is one of the ‘secret weapon’ plugins I was specifically asked to port to VST, and I’m happy to bring it to you all.
Still doing the Patreon, without which I will be one poor and hungry DSP nerd. Please support it and encourage others to support it, because I have a lot of plugins still to come. It’s already 11 plugins in just a few months, and there are many more, not even counting new inventions in the works.
Nice.. I look forward to trying this one!
The way I did it:
Separate signal into sum and difference of adjacent samples, and then waveshape the latter. It produces the same result as slew2.
Installed the vst dlls and the gui in sonar platinum 64 & 32 bit doesn’t display. Am I missing something ??
Same issue with Thunder and Slew as the previous comment on Slew2, I think it’s issue for all the VSTs in the NewUpdates zip this occurs in both Sonars on W10…
My trouble there is, Sonar Platinum on W10 is broken.
I don’t draw the controls: the host program does that, directed by information given by the plugin. Sonar is getting the information (I’ve seen screengrabs where it’s drawn all screwed up, but using the information) but it’s not doing its part, and my plugin can’t draw the GUI for Sonar because the idea is that Sonar will be able to do it, its way (if it liked, it could draw fancy knobs like Blue Cat host plugins. In fact it is trying to draw it all blue-on-black in a kind of techno-y Sonar style, it’s just failing).
That is one workaround, by the way: host the VSTs in anything that will draw interfaces for Sonar, such as Blue Cat Patchwork. Sonar control-drawing code is not mine to fix :/
Thanks Chris… You live & learn ^ | ^
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[…] https://www.airwindows.com/slew2-2/ 「ナイキスト周波数に近い高周波を抑えるスルークリッピング」 SLEW（無印）とは違い、エフェクト対象に周波数レンジが存在するバージョンです。耳にキツイ高音を抑えることが出来ます。その丸まり具合が結構良い。ディエッサーとしても使えるそうです。 […]
Hi Chris,
I love to use Slew2 to tame the highest Treble during Mastering! No EQ can do it that well!
But one thing keeps bugging me a little – it seems to behave quite differently at different sampling rates – which I suppose is due to it working around the nyquist frequency.
I assume that changing this behaviour might be quite difficult – but do you see any chance to create something like a “SlewFix”, that, at any sampling rate, behaves like Slew2 at 44,1? (Or at 48 or 96 – whatever – just in a more consistent way?)
Anyway – keep up the awesome work!
@ Matthias – how is it responding at low rates like 44.1, does it still work as intended?
Gotta say I love the idea just by lowing up this little guy I can potentially cut some of the aliasing out of my signal. Pretty cool effect…! Not sure if this is the best thing for that or if there are other ones doing a better job, must keep looking into that
[…] has released Slew2, a free clipper effect plugin for Windows and Mac. Slew2 lets you limit or wipe out the highest […]