Sound is choppy/computerized every so often on Mac

Its not every game but its atleast 25% of the time I have to mute the sound becuse I find it far to annoying. I like the sound of the game and I'd rather be able to hear it then listen to music while playing its much easier to concerntrate. I don't know if theres a fix for this or not. I hope so but I doubt it Mac isnt very mainstream so