In wireless microphones, a loss of RF signal, which in turn results in loss of audio or audio that is noticeably noisy. Also refers to a small physical area where there is insufficient RF signal present to obtain satisfactory wireless operation. Dropouts are normally caused by multi-path or signal blockage due to some type of obstruction. Also refers to areas on oxide tape where there is a problem with the coating and where subsequently audio or digital data is not properly reproduced.