MacBook Unidentified Sound My MacBook started making a weird sound a few weeks ago. It happens about every 10 minutes, and I don't know what is causing it. It's not the hardware. I know because if my computer is on mute, then I can't hear it. Here is a link to a video that plays the sound: ﻿https://youtu.be/nCEbk7zI3cs

I'm on a 2017 MacBook Pro running High Sierra.

How can I get this sound to go away?
I updated my OS version to Mojave, and it went away. I still have no idea what it was, but at least it's gone.