Transcripts for CNN CNN Special Report 20140407 02:08:00 : v

designed to ping at a certain frequency. that s pretty unnatural in nature, but that doesn t mean they could be picking upside tones from something else or anything in the environment. and without having any other parameters in addition to the frequency, there is other characteristics to the signal that would identify uniquely as coming from the box, it s really difficult to say exactly what they heard. unfortunately, from what i gather, they did not record it. paul? exactly. this is what we ve been talking about earlier. the water, the medium through which the wave is transmitted can distort the signal such that even if the frequency is correct at the receiver, there may be some doubt as to what it is that they re receiving. and mary schiavo, you ve been keeping abreast of the latest information here. you heard what matthew chance reported, that angus houston is going to give a press conference in about two hours.