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金沙城娱乐手机app安卓版:Disguised sea sounds give intruders away

点击量:   时间:2019-03-02 13:08:01

By Paul Marks THE sound of the ocean is being harnessed to create a covert message system for warning ports of intruders. The system cuts out chunks of the ocean’s natural background noise to create digital codes. Dennis Jones and his colleagues at Defence R&D Canada, a naval research lab in Dartmouth, Nova Scotia,