Is there a plugin that suppresses the frequency below a threshold?

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I drew a picture to demonstrate what I mean:
ImTIUi4rGm.jpg
I found out I can (sorta) achieve it by using soothe2 with delta function and mix it with the original track, but that method seems to unwantedly multiply/boost the resonance frequencies and make it uneven. :neutral:

Is there any plugin that can supress the 'floor noise' WITHOUT affecting the overall spectrum shape?
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This is quite similar to the "contrast" effect in Unfiltered Audio SpecOps

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imrae wrote: Tue May 21, 2024 11:28 pm This is quite similar to the "contrast" effect in Unfiltered Audio SpecOps
Hm... it seems it amplifies the dominant materials(I suppose frequencies)... I hope it won't affect the overall spectral shape.
I'll look into it tho, thanks!

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Mmm, not sure you will like it but the only one I know is in Bitwig.
With the spectral suit, you get a loudness splitter. You can set threshold to increase or reduce the volume of frequencies between loudness thresholds.

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Ok I found a plugin called Spectral Suite made by Andrew Reeman.

https://www.andrewreeman.com/spectralsuite/

It's not perfect, (It seems it can steeply distort the overall spectrum shape depending on the setting, and it has no visual analyzer to see where/how it's doing its job.) but it seems to do the job that I want.

Tested with saw + brown noise:
FL64_uwWGdHqjKq.jpg
3Nyr63EeyH.jpg
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Last edited by Eva Redwood on Wed May 22, 2024 12:50 am, edited 2 times in total.

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Jac459 wrote: Wed May 22, 2024 12:23 am Mmm, not sure you will like it but the only one I know is in Bitwig.
With the spectral suit, you get a loudness splitter. You can set threshold to increase or reduce the volume of frequencies between loudness thresholds.
I'll check that one out too, thanks

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my other modular synth is a bugbrand

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Spectral Compressor might be worth a look.
https://github.com/robbert-vdh/nih-plug ... compressor

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skyscape wrote: Wed May 22, 2024 12:59 am Spectral Compressor might be worth a look.
https://github.com/robbert-vdh/nih-plug ... compressor
Spectral Compressor is exactly the plugin that made me post this question because it does the opposite of what I want.

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Thanks! Their website seems to be down, but I'll look for if I can find it.

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Eva Redwood wrote: Wed May 22, 2024 1:19 am
Thanks! Their website seems to be down, but I'll look for if I can find it.
weird, its working from here (UK). that's one of two plugins they do which might work, btw, there's also spectralcompand.
my other modular synth is a bugbrand

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There's also this, works as a spectral expander...
http://www.proaudiodsp.com/
But the price isn't as good as the sound hack stuff. Worth a look

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If it is just noise you want removed, there are better ways. I forgot what plugins do this, but in audio editors you typically select a piece with noise only. That serves as "fingerprint" of the noise to be subtracted from the signal.
Would that work for you?
NB: it gives nasty artefacts when applied too aggressively.
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BertKoor wrote: Wed May 22, 2024 9:02 am If it is just noise you want removed, there are better ways. I forgot what plugins do this, but in audio editors you typically select a piece with noise only. That serves as "fingerprint" of the noise to be subtracted from the signal.
Would that work for you?
NB: it gives nasty artefacts when applied too aggressively.
Well, the purpose for me is to make the sound(especially artificially synthesized vocals and synths with mechanical noise) more clean and polished by leaving only the 'correct' frequencies for each harmonic, without completely wiping out others. Spectral Suite seems to be working for me for this purpose, although it's not perfect.

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Cockos ReaFIR might do what you need.
https://www.reaper.fm/reaplugs/

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