Strange sound every 30 mins
Just lately I keep hearing a sound about every 30 mins.
Don't know what it is and never heard it before until recently.
Can only describe it as a "spring" sound.
I've checked out all the system sounds on my Mac but it's none of them.
The only apps I have running are Finder, Chrome, Mail, Messages and iTunes which I've always had so no idea what's making this 'alert' to sound.
Mac mini, OS X Yosemite (10.10)