| 31. | On July 10, 1973, explosions from Vailulu'u were recorded by SOFAR ( hydrophone records of underwater acoustic signals ).
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| 32. | It has been suggested that a small black hole passing through the Earth would produce a detectable acoustic signal.
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| 33. | While acoustic signals at sea travel through water, on land, they can be assumed to come through the air.
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| 34. | Travel time instruments determine water velocity by at least two acoustic signals, one up stream and one down stream.
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| 35. | Every time a vehicle equipped with an OBU passes through a tolling facility, the OBU gives a single acoustic signal.
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| 36. | Acoustic signals may be of greater prevalence amongst perching species, particularly those that live on low vegetation in Australia's tropics.
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| 37. | This powerful new service uses a directional ultrasonic detector which precisely analyses an acoustic signal from each network asset in turn.
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| 38. | Previously, acoustic signals locating the " black boxes " were found, but the storms moved in before they could be recovered.
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| 39. | Variations arise from differences in people's ear canal resonance, the frequency of the harmful acoustic signal, and the length of exposure.
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| 40. | The motor theory is based upon the premise that speech sounds are encoded in the acoustic signal rather than enciphered in it.
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