This wearable is sort of like an automated lip reader. You don’t have to speak the commands loudly. Via TechXplore:
Cheng Zhang, assistant professor of information science in the Cornell Ann S. Bowers College of Computing and Information Science, and doctoral student Ruidong Zhang have an answer: SpeeChin, a silent-speech recognition (SSR) device that can identify silent commands using images of skin deformation in the neck and face captured by a neck-mounted infrared (IR) camera.
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