Total Mac OS noob here, after spending a lifetime on Windows I have my first Mac.

Every couple minutes I hear an odd sound (playing through the speakers), it sounds like two beeps in quick succession, with a puddle-like noise in the background.

It doesn't seem to be anything listed under Sound Effects in the control panel.

What does this sound mean, and do I have to do anything?

  • What happens if you adjust the volume? Does the volume of the sound change too? Commented Dec 15, 2014 at 23:25
  • @AlistairMcMillan Yes it does
    – JMK
    Commented Dec 15, 2014 at 23:26
  • Could you record the sound for us? For example using the voice memo app on your phone. Commented Dec 15, 2014 at 23:26
  • 3
    Found it by cycling through the sounds on various apps, it was the Contact Available sound on Skype, never heard that on Windows, cheers
    – JMK
    Commented Dec 15, 2014 at 23:29
  • 1
    @JMK Then answer your own question, its allowed, and you even get a badge from it!
    – nelson2tm
    Commented Jun 21, 2015 at 16:53

2 Answers 2


This sounds like the sound Skype makes for a Contact Available notification.


Temporary solution

Go to Skype-> Preferences -> notifications-> Event: Contact becomes available and untick "play sound"

I'm almost 100% sure that I don't have any pending request yet this sound plays randomly in every minute. I removed the tick from the menu and it's fine now.

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