4Jing F,Xuemin W,Mingshi W,et al. Noninvasive Acoustical Anal-ysis System of Coronary Heart Disease [ C ] //BiomedicalEngineering Conference 1997.Biloxi:IEEE, 1997;239-241.
5Ray-Hua H,Zong-Ying L, Yu-Ning J,et al. A Study of High Sensi-tive Diaphragm for Silicon Microphone Applications [ C ]//Micr-osystem ,Packaging, Assembly Conference Taiwan 2006, Taipei :IEEE ,2006:1-4.