linux: added proper guide to noisecancellation with pipewire

wiki/linux/audio.md

@@ -2,9 +2,36 @@
 
 Audio is an important point in a linux desktop environment
 
+## Pulseaudio
+
+[Pulseaudio](https://www.freedesktop.org/wiki/Software/PulseAudio) is the go-to
+audio server program for linux distributions.
+
 ## Noise cancellation
 
-Noise cancellation can be achieved by installing
+Noise cancellation can be easily achieved by installing
 [Noisetorch](https://github.com/lawl/NoiseTorch).
-This works for `pulseaudio` and `pipewire`.
 After the installation modify the `Voice Activation Threshhold` to your needs.
+
+## Pipewire
+
+[Pipewire](https://pipewire.org) is a graph based processing engine for
+`pulseaudio` and `JACK`.
+It makes improvements for the input and output handling.
+
+### Installation
+
+If the current audio server program running is `pulseaudio`, you can just
+install `pipewire-pulse` (on Arch-based distros or according packages on other
+distros) and pipewire is running.
+Make sure to restart to be sure everything is running correctly.
+
+### Noise cancellation
+
+Noise cancellation can be easily achieved in `pipewire`-style by installing
+[easyeffects](https://github.com/wwmm/easyeffects).
+Make sure to check the box `Process all Inputs` and `Process all Outputs` to
+route everything through `easyeffects`.
+Make log out of your system afterwards.
+To enable noise cancellation navigate `Inputs` and click `Plugins`.
+After that click `Add Plugin` and select `Noise Reduction`.