Reinforcing the Sound Barrier (IMAGE) Nanyang Technological University Caption Developed by NTU Singapore, the noise cancellation device can reduce noise pollution entering buildings by 50 per cent even while windows are wide open. Credit NTU Singapore Usage Restrictions None 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.