Communications of the ACM
Researchers Bring Underwater Messaging App to Smartphones
The team created an algorithm that allows AquaApp to optimize, in real time, the bitrate and acoustic frequencies of each transmission based on certain parameters, including distance, noise, and variations in frequency response across devices.
Credit: University of Washington
The AquaApp mobile interface developed by University of Washington (UW) researchers facilitates underwater messaging using acoustic signals.
"With AquaApp, we demonstrate underwater messaging using the speaker and microphone widely available on smartphones and watches," said UW's Tuochao Chen.
AquaApp users can choose among 240 preset messages corresponding to hand signals employed by divers, with the 20 most-used signals displayed for easy access; they also can screen messages through categories such as directional indicators, environmental factors, and equipment status.
AquaApp features an algorithm that optimizes the bitrate and acoustic frequencies of each transmission based on certain parameters in real time, while a networking protocol shares access to an underwater network.
From Allen School News (University of Washington)
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