strange sounds like a radio signal or walkie talkie, it s not the HD or fan
its pretty lound annoying sound
each time when a sound needs to play the noise comes, for example warning tone receiving email or just playing music
the weird sound stops after a few seconds
turning off the volume has no effect!!
iMac
Hi didret,
Thank you for participating in the Apple Support Communities.
If you hear strange sounds when audio is playing through your Mac speakers, take a look at this troubleshooting article:
Troubleshooting issues with no audio from built-in speakers on Macs - Apple Support
Although the article refers to no audio, the steps may be useful with the behavior you're seeing as well.
After this, you can find some additional help with isolating the behavior in the "If the issue occurs in various applications, or in Mac OS X" section of this article:
Mac OS X: How to troubleshoot a software issue - Apple Support
All the best,
Jeremy
weird sound through speakers
