This is a replacement voice pack for the 'Pilot Monitoring Callouts' FSIUPC plugin:
Huge thanks and credit to @Hannes Altmann who recorded the callouts!
The sound pack was tested using the default volume levels in the FSLabs MCDU.
Drop the folder from the archive into 'Prepar3d v4/Modules', agreeing to overwrite the existing files.
You will probably want to increase the volume in PMCO.lua above the default 65% as these sounds are a bit quieter than the default computer generated sounds.