my mac gives a strange short notification sound every few minutes and i cant find out why

Hi Bluub1970,

Welcome to the Apple Community, where some of us do our best to help each other.

Wondering if this may help:

Click the little Black Apple icon on the left, in the top menu bar, of your Mac

and choose "System Preferences". from the drop-down menu.

In the window that opens, click the Notifications icon (see below)

Click any apps in the list on the left that have "on" under them (unnecessarily?) so you can turn their notifications "off"

(Where it says "allow notifications" (at the top on the right), slide (drag) the button left to turn them off.

(Blue/white button left is on, .... grey/white button right is off)

This will let you check whether or not it is an app that is causing the notification / alert sound.

Hope this works for you,

Else

Please feel free to "Post" here again :)

Oops. .... Sorry

(Blue/white button right is on, .... grey/white button left is off)

Cheers :)

Thank you for letting us know !

Glad to hear you solved the problem :)