Meta-silencer with designable timbre (IMAGE) International Journal of Extreme Manufacturing Caption (a) Meta-silencer’s configuration and manufacturing. (b) Schematic diagram of transmission loss (TL) property as a function of mode density and frequency. (c) Designable timbre via a meta-silencer. Credit By Nengyin Wang, Chengcheng Zhou, Sheng Qiu, Sibo Huang, Bin Jia, Shanshan Liu, Junmei Cao, Zhiling Zhou, Hua Ding, Jie Zhu and Yong Li. Usage Restrictions Credit must be given to the creator. License CC BY 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.