Show HN: Subvocal – Talk to your computer without making noise

Aarush and Arnav, co-founders of The Subvocal Company, are developing smart glasses that enable users to communicate silently with their computers. Their innovative technology allows individuals to silently mouth words, and the glasses decode these sounds into text at the speed of speech, all without the user having to open their mouth or move their lips.

This technology is achieved by utilizing radio waves that pass through facial features and are modulated by the user's silent speech patterns, which are then decoded by foundation models. Despite initial setbacks due to challenges with EMG technology and the physical placement of sensors, the founders successfully developed a low-noise RF sensing stack and designed an effective head rig to hold the antennas in place.

To ensure cross-user generalization, they scaled their pretraining data by having people wear the glasses while reading prompts in their office, which resulted in a significant improvement in performance. The company is currently working on refining their product and aims to ship their glasses to customers in Q1 2027. They are also accepting preorders for the first batch of 500 units, with a $200 discount off the final price.