In today's rapidly advancing technology, the Massachusetts Institute of Technology (MIT) has recently introduced a groundbreaking new technology called AlterEgo. It is a non-invasive wearable AI device that allows users to communicate with the device without speaking, by capturing neuromuscular signals.
The working principle of AlterEgo is very unique. When users silently speak in their minds, the brain sends neural signals to related muscles in the throat, which generate weak electromyographic signals. AlterEgo captures these signals using multiple precision electrode sensors and converts them into recognizable language output.
The device is designed similarly to traditional headphones, worn on the head and face, with electrode sensors placed at key positions on the face and neck to ensure high-quality signal acquisition. To improve the stability and clarity of the signals, AlterEgo uses gold-plated silver electrodes and conductive paste.
The captured neuromuscular signals go through a series of complex signal processing steps to eliminate noise and interference. Specifically, the system uses a bias signal cancellation technique to eliminate AC power interference, and a Butterworth filter to remove high-frequency noise. After these processes, the signals are finally converted into Mel Frequency Cepstral Coefficients features.
Next, after being processed by a convolutional neural network (CNN), AlterEgo can classify silent speech signals into specific words with an accuracy of up to 92%. The results are fed back to the user through a bone conduction headphone, enabling bidirectional silent interaction.
This technology has a wide range of application scenarios. For example, users can silently perform numerical recognition, mathematical calculations, or smart home control. For people with speech disorders, AlterEgo is particularly useful; they only need to silently mouth words, and the device can help them express what they need, greatly facilitating communication.
The launch of AlterEgo is undoubtedly a major breakthrough in technological development, making silent communication possible. In the future, this new way of communication is expected to change how we interact with devices, bringing users a more convenient lifestyle experience.
Official website: https://www.alterego.io/
**Key Points:**
📡 AlterEgo is a non-invasive AI device that can capture users' neuromuscular signals to enable silent communication.
🧠 Through complex signal processing and convolutional neural networks, AlterEgo can accurately recognize and feedback silently spoken content.
💬 This device provides a new way of communication for people with speech disorders, greatly improving the convenience of communication.
