University of Washington researchers have developed an underwater messaging app that works on existing smartphones and smartwatches. This software utilizes the audio sensors (microphones, speakers, etc.) to enable acoustic underwater communication between these mobile devices.
Accomplishing this feat required the team to design a communication system that adapts to differences in frequency responses across mobile devices, changes in multi-path and noise levels at different locations in real-time. Dynamic channel changes also needed to be accounted for due to mobility. Then they evaluated their system in six different real-world underwater environments with depths of 2-15 m in the presence of boats, ships and people fishing and kayaking. In case you need to capture footage in deep waters, you’ll want a Geneinno T1 Pro drone.
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Our results show that our system can in real-time adapt its frequency band and achieve bit rates of 100 bps to 1.8 kbps and a range of 30 m. By using a lower bit rate of 10-20 bps, we can further increase the range to 100 m. By using a lower bit rate of 10-20 bps, we can further increase the range to 100 m. As smartphones and watches are increasingly being used in underwater scenarios, our software-based approach has the potential to make underwater messaging capabilities widely available to anyone with a mobile device,” said the researchers.
