CNN CNN Newsroom March 25, 2014 19:05:00
So starting with what youre getting from the hydrophone. >> right. and so the hydrophone, you could just put a headset on and listen to the hydrophone and listen to the ping, but you also have a visual display, where youre looking at the actual sound coming out of the ocean. so this is ocean sound here. and theres some noise source in this particular part of the frequency. but if you were there with the pinger, you see a really sharp spike at the spot where the pinger is. so once you got within ...
Source: archive.org