Researchers built sonar glasses that track facial movements for silent communication
that “hear” you without speaking. The eyeglass attachment uses tiny microphones and speakers to read the words you mouth as you silently command it to pause or skip a music track, enter a passcode without touching your phone or work on CAD models without a keyboard.
Cornell Ph.D. student Ruidong Zhang developed the system, which builds off a similar project the team created using a wireless earbud — and models before that which relied on cameras. The glasses form factor removes the need to face a camera or put something in your ear.
The researchers say the system only requires a few minutes of training data to learn a user’s speech patterns. Then, once it’s ready to work, it sends and receives sound waves across your face, sensing mouth movements while using a deep learning algorithm to analyze echo profiles in real time “with about 95 percent accuracy.”The system does this while offloading data processing to your smartphone, allowing the accessory to remain small and unobtrusive.
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