Dryer runs about 10 min. then starts buzzing

Hello, my dryer runs fine about 5-10 minutes then starts making a buzzing noise from bottom of dryer. It does not stop or anything, just stats buzzing noise. motor?

Is the buzzing noise like a vibration and does it seem to be left or right side, can you tell?

Standing in front of machine, more to the left and back of machine. Not causing machine to vibrate.