2016 MacBook Pro 15" making white noise/static from speakers after use

Hello guys, my new MacBook Pro I have noticed makes a faint white noise/static sound from the speakers it almost sounds like a fan noise immediately after I pause a song or an alert goes off and it lasts for about 30 seconds . its like a noise triggering when the speakers activate and once the speakers are done it lasts for 30 seconds then stops. I have very good hearing so maybe I hear it better than some but if anyone has a Mac please play any sound on it then make it stop and put your ear close to the speakers and let me know if yours does as well. Thanks