iPad 2 crackles noise while recording video

I try recording video using iPad 2 64g 3G on AT&T. When I record video using the camera or FaceTime, there is a crackling sound during playback. The noise occurs when recording video, regular video plays fine. After restarting the device, it doesn't work.Then I take my iPad into the local Apple Geniuses and get a brand new one.

Posted in: iPad 2,iPad Camera,iPad FaceTime