Bidirectional Silent Human Communication System Using Subvocal EMG, Secure NFMI Mesh Networking, and Transcutaneous Perceptual Stimulation

This whitepaper presents a novel, integrated system for bidirectional, silent, and secure human-to-human communication. The architecture synergistically combines three core technologies: 1. Subvocal Electromyography (sEMG): For capturing and classifying silent speech intentions with ≥85% accuracy using a Temporal Convolutional Network (TCN). 2. Secure NFMI Mesh Networking: A Near-Field Magnetic Induction protocol operating at 13.56 MHz with TDMA-FHSS scheduling, AES-128 encryption, and ECDH key exchange, providing inherent Low Probability of Intercept/Detection (LPI/LPD) within a 2-meter range. 3. Transcutaneous Non-Acoustic Perceptual Stimulation: Utilizing bistable electromagnetic actuators and piezoelectric bone conductors to deliver silent, tactile feedback to the user. The system is characterized by its ultra-low power consumption (~41 mW average), enabling over 24 hours of operation, and full compliance with ICNIRP 2020 and IEC 60601 safety standards. It is designed for reliability in electromagnetically contested environments. This publication aims to establish prior art and foster open innovation in wearable communication, with direct applications in critical care (e.g., post-laryngectomy communication), tactical operations, and high-noise industrial settings. By openly sharing this architecture, we intend to prevent patent exclusivity on the core concept and encourage the global research community to advance this technology for beneficial use cases.