MIT has unveiled a groundbreaking wearable AI device called AlterEgo, enabling users to communicate with technology without speaking aloud. This non-invasive, head-mounted device captures subtle neuromuscular signals generated when a person silently mouths words, allowing for seamless, silent interaction. The technology works by detecting minute electrical signals sent from the brain to the muscles in the throat and face during internal speech. AlterEgo uses an array of precision electrodes placed on the user’s face and neck to pick up these signals. The device resembles a lightweight headset, with gold-plated silver electrodes and conductive gel used to ensure high-fidelity signal acquisition. To enhance signal clarity, the system employs advanced noise reduction techniques. It uses bias signal cancellation to eliminate interference from ambient electrical fields and applies a Butterworth filter to remove high-frequency noise. The cleaned signals are then converted into Mel-frequency cepstral coefficients (MFCCs), a standard feature representation in speech processing. These features are fed into a convolutional neural network (CNN), which classifies the silent speech patterns into specific words with an accuracy rate of up to 92%. The recognized output is then delivered back to the user through bone-conduction audio, enabling real-time, two-way silent communication. The potential applications of AlterEgo are vast. Users can perform tasks such as number recognition, mental math, or controlling smart home devices—all without uttering a word. For individuals with speech impairments, the device offers a transformative way to express thoughts and needs, significantly improving accessibility and independence in daily life. As a major leap in human-computer interaction, AlterEgo redefines how we engage with technology. By turning silent thoughts into actionable commands, it opens new possibilities for communication, productivity, and inclusion. The device represents a significant step toward more intuitive, natural interfaces between humans and AI. For more information, visit: https://www.alterego.io Key highlights: - AlterEgo is a non-invasive AI wearable that detects neuromuscular signals for silent communication. - It uses advanced signal processing and a convolutional neural network to translate internal speech with up to 92% accuracy. - The technology offers a powerful new communication tool, especially for people with speech disabilities.