howdy.
AM no mechanic and hate noise from car that I cant pin point.
I had a noise that sounds like your description from the front wheels.
Which at slow speed was not there, hard accelerating not there and could make it stop but quick hit to the break... In my case it was the break pads that were too thin and the clips where touching the disc rotors. You can either check the pad or look at the rotor for wear marks. Had the pads changed and the noise is gone.
Hope you have a simple fix and that it works out as simple as mine.
GL