It could be a bad motor mount, or
(much less likely) your CV joint is starting to go bad. They are both easy enough to check. Just take a look at them and see if the motor mount is starting to tear, and see if the CV joint boot is still in one piece.

I'd take a good looks at the motor mounts. They usually cause a car to make noise like that when accelerating, decellerating, making corners, ect...