I don't know if it would be an issue without a helmet and a stock shield, but it might be with a tall shield. I guess a humming sound would be another way to describe what I refer to as a drone. It can also be heard when installing certain aftermarket exhausts in certain cars (headers and/or cat backs). It will be experienced differently by different people, so you really won't know if its an issue for you until you judge for yourself; in other words, it is very subjective.