Lv2 suite of plugins for broadband noise reduction
The only thing it is missing natively which Audacity had built-in is background noise filtering; but that is easily accomplished with a plugin such as Lucian Dato's Noise Repellent.
Mirror of Ardour Source Code
I recommend Ardour, because I prefer using open-source tools where possible. You can get an "official" build on almost any OS for a nominal fee, or you can build it yourself at no cost from source (as many Linux distributions do).
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Noise Repellent plugin para GuitarIX (Noise Reduction. Don`t is Noise Gate)
1 project | reddit.com/r/Guitarix | 10 Jul 2021
A "free" denoiser plugin by Bertom
1 project | reddit.com/r/podcasting | 8 Mar 2021
Simulated Larsen or Acoustic Feedback Effect?
1 project | reddit.com/r/Guitarix | 13 May 2022
Free Music Software
1 project | reddit.com/r/software | 13 May 2022
Is There Any Programs Better Than Adobe?
2 projects | reddit.com/r/letsplay | 11 May 2022