No. A beeping sound does not indicate that a shock is about to happen. This is a patient alert feature that is communicating a doctor should check the heart device, or there is possible magnetic interference. If a magnet is causing these actions, move a safe distance away. If this continues, it could be a major item for a doctor to review or it could be as minimal as a simple change in measurements. Call the clinic and ask for instructions, whether that is an in-person visit or a manual transmission of device data.