ecms (electret condenser microphones) with widely-ranged electro-acoustic applications are manufactured based on the stare-of-the-are technology and have been widely adopted in many areas (e.g. cell phone, smart phone, smart tv, pda, digital still camera, ic recorder, laptop pc, notebook, robot cleaner, refrigerator, table pc, etc.) thanks to their high quality, high efficiency and stron competitiveness. a broad line of products offered by BSE include round ecm (Ø9.7~Ø3 series), round analog smd(Ø6~Ø3 series), square analog smd, high snr, and so forth. in particular, BSE has successfully launched such pin-to-pin type a-smd (asmo_c110t-3p) model comparable to a mems microphone for better customer satisfaction