Low-Cost, Tiny-Sized MEMS Hydrophone Sensor for Water Pipeline Leak Detection. - Jinghui Xu; Kevin Tshun-Chuan Chai; Guoqiang Wu; Beibei Han; Eva Leong-Ching Wai; Wei Li; Jason Yeo; Edwin Nijhof; Yuandong Gu (IEEE Trans. Ind. Electron., 2019)