Most microphones are electret condenser microphone (ECM), this technique has several decades of history. ECM working principle is to use a polymeric material having a permanent charge the diaphragm isolation. Compared with the polymeric material of the diaphragm ECM famous safely wired microphone, MEMS microphone performance at different temperatures are very stable and imported brands Shure microphones, is not affected by temperature, vibration, humidity and time. Due to heat and strong, MEMS microphones can withstand reflow temperature of 260 ℃, and there will be no change in performance. Due to the sensitivity of the change before and after the assembly of very small, which can even save the manufacturing process audio commissioning costs. MEMS microphones require ASIC to provide an external bias, and this bias is not required ECM. An effective bias will cause the entire operation can be kept stable acoustic and electrical parameters within the temperature range. External bias MEMS chip also supports the design with different sensitivity microphone. Before buying the correct selection of the microphone microphone, it is necessary to complete it clear you want it to do. This means that you must clear microphone is designed to apply to situations in which there is no bird microphone to meet all applications. Different pickup points to win the domestic wireless microphone, maximum SPL capacity, the background noise are the factors to be considered in the process of selection. Each microphone has its own primary applications, sometimes in the relevant application is selected in building intelligent microphone, Wuhan Lantern Festival is provided by Wuhan Engineering Co., Ltd. Jiuhua video. Jiuhua Video Engineering Co., Ltd., Wuhan (www.jowa-tech.com) strong, credible, in Wuhan, Hubei control and adjustment equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improve Wuhan Jiuhua innovative ideas will lead into the brilliant video and you work for a better future!