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AI Wearable Restores Speech After Stroke
1 Feb
Summary
- Wearable device Revoice helps stroke survivors regain natural speech.
- It uses AI to translate subtle throat vibrations into fluent speech.
- Patients reported a 55% increase in communication satisfaction.

Scientists at the University of Cambridge have developed a novel wearable device called Revoice, designed to assist individuals who have lost the ability to speak clearly following a stroke. This innovative technology aims to restore natural communication without the need for surgery or brain implants.
The device, resembling a soft choker, is equipped with sensitive textile strain sensors and a wireless circuit board. It detects minute vibrations in the throat as the user silently mouths words. Simultaneously, it monitors pulse signals to gauge emotional state, processing this data through two artificial intelligence agents.
Unlike previous silent speech systems, Revoice avoids significant delays, offering near-instantaneous responses. Its efficient AI-driven throat sensor system and lightweight language model ensure low power consumption, with a battery expected to last a full day. In trials with five stroke patients suffering from dysarthria, participants reported a remarkable 55% increase in communication satisfaction.




