An interface system including a manipulandum adapted to be moveable according to a manual gesture imparted by the user; a sensor adapted to detect a characteristic of the manual gesture imparted to the manipulandum and to generate a sensor signal representing the detected characteristic of the manual gesture; a microphone adapted to detect a characteristic of an utterance spoken by the user and to generate an audio signal representing the detected characteristic of the spoken utterance; and a control system adapted receive the generated sensor and audio signals and to transmit a command signal to an electronic device via a communication link, the command signal being based on the generated sensor and audio signals and the time synchronization between them.