Noisetorch (from manjaro repo) depends on pulseaudio, and this conflicts with pipewire-pulse (required by manjaro-pipewire).
The actual noisetorch package is supposed to work with either Pipewire or Pulseaudio, though. Seems that previously, pipewire-pulse provided pulseaudio but that this has changed: Why does `pipewire-pulse` no longer declare `provides=(pulseaudio)`? (#10) · Issues · Arch Linux / Packaging / Packages / pipewire · GitLab