Wearable Voice Device Schematic (IMAGE) University of California - Los Angeles Caption The two components — and five layers — of the device allow it to turn muscle movement into electrical signals which, with the help of machine learning, are ultimtately converted into speech signals and audible vocal expression. Credit Jun Chen Lab/UCLA Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.