Problem with Echo/Noise-Cancellation

Nobody can explain better than how Arch linux wiki has it.

Make sure you only run one sound server tho … If you want to use PulseAudio, make sure you have manjaro-pulse installed. If you want to use Pipewire, make sure you install manjaro-pipewire then follow PipeWire - ArchWiki instead as will explain to install noise-suppression-for-voice from AUR.