A gesture recognition apparatus includes a sensor unit configured to be worn by a user on a user's body part. The sensor unit includes one or more sensors, a processor unit, the processor unit and the sensor unit are arranged in communication with each other, the processor unit receiving acoustic data from the one or more sensors, wherein the acoustic data corresponds to a gesture performed by a user, and the processor unit is configured to process the acoustic data received from the one or more sensors to determine a gesture performed by the user.