Page 8 - Human Ear News Today : Breaking News, Live Updates & Top Stories | Vimarsana

It's a frequency designed to be heard not by the human ear, but by acoustic listeners. those acoustic listeners will then provide both a visual reference point, a wave form, and an audio sound which can be heard then by the ear. the pinger is not only designed for the 37.5, but the rhythmic one-second pings. there's many noises in the ocean. some of them are mammal made. others could be from other machinery. the sound -- we learned last night and over the last few days sound travels far, especially if it gets into the deep sea sound channel. but the pinger, the very noise of the pinger is desi...

>> no questions? >> no. >> everyone agree? >> my question to paul would be what is the receiver -- they're getting this on receiver. so you wouldn't actually hear this -- would this be something to the human ear? >> that's interesting. you said you can hear it, but it also has a visible -- >> well, you can hear my example. my example was one thousand cycles, well within hearing range. but in actuality, we're looking for something that is about double the human's highest limit of hearing when you're a baby. and it decreases after that. so you would not hear it. but you would see the wave form o...

There's one of these on the cockpit voice recorder and data recorder. two boxes, that's the battery. this battery does not keep the memory in it, the memory's already stored, it's solid. even after this goes off, the data is still stored in here. i've had that question. >> this battery is for the actual pinging sound? >> that's correct. and we have a thing of water here. how does it work? >> i'll place it in there in a second. >> what's going to happen, we have 37 kilo hertz. which is higher that the human ear can hear. but it moves through water pretty well. what we have here is the connecter...

And director of special projects is with us. former transportation general mary schiavo, and analyst and veteran pilot miles o'brien. david, you have the pinger, explain how it works. >> this is the pinger, it gets replaced on the c check. there's one of these on the cockpit voice recorder and data recorder. two boxes, that's the battery. this battery does not keep the memory in it, the memory's already stored, it's solid. even after this goes off, the data is still stored in here. i've had that question. >> this battery is for the actual pinging sound? >> krast -- that's correct. and we have ...

Have expect it to be when you consider that and how deep the water is and the competing noises in the ocean when the waves are smacking around it illustrates how difficult this job is. you have to be in a two-mile radius to pick this up. you don't usually hear with the the human ear. they have special equipment that is designed to detect that snapping sound. >> and searchers have, you know, they said that there are pieces that are floating. the pieces that are floating today may not be floating tomorrow. >> absolutely. and we do know today nasa is stepping in to help. they will target their sp...