Sound Projector (IMAGE) University of Sussex Caption The current version of Sussex's acoustic projector. The speaker is contained in the back, together with the tracking camera and one of the acoustic lenses. The part in white is the second acoustic lens in the telescope. Credit University of Sussex Usage Restrictions To be used in conjunction only with news story regarding University of Sussex research. License Licensed 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.