I've noticed on a few occasions that when i slow down for a stop light ... as i approach stopping, i get tihs weird sounding hollow like sound. Sounds like the it is coming from the rotors/pad (somewhere around the wheels) but being inside the car, its hard to pinpoint.

I've only heard it 3 times but twice on a drive yesterday so i though i would do a search to see if anybody has heard this sound. Since nothing came up on the search, i thought i would post to see if anybody has any suggestions.

Cheers,
Jim