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This paper describes a technique that generates speech acoustics from articulator movements. Our motivation is to help people who can no longer speak following laryngectomy, a procedure that is carried out tens of thousands of times per year in the Western world. Our method for sensing articulator movement, permanent magnetic articulography, relies on small, unobtrusive magnets attached to the lips...
There are three basic techniques commonly employed to extract data from an undersea sensor: 1. via a fixed wired link to a surface expression. 2. via a pop-up buoy, usually incorporating an RF link. 3. via wireless undersea communications. We suggest that the first is impractical in deep or rough conditions (consider the recent oil platform disaster in the Gulf of Mexico). The second consumes considerable...
At present, the realities of acoustic communications and undersea networks differ substantially from the expectations arising from academic theory and investigation. The issue is not that the fundamentals of communications theory do not apply, but rather the fact that the difficulties of the acoustic channel do not necessarily fit the assumptions underlying conventional applications of that theory...
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