DIRECTIONAL SILICON CONDENSER MICROPHONE

摘要

Disclosed is a directional silicon condenser microphone comprising: a metal case which is formed with a front sound inlet hole for collecting front sound; a board which is formed with a rear sound inlet hole for collecting rear sound, the board being mounted with a MEMS microphone chip and an ASIC chip having a electric pressure pump and a buffer IC and being formed with a connecting pattern for joining with the metal case; a phase delayer for delaying the phase of sound collected through the front sound inlet hole or the rear sound inlet hole; a fixing means for fixing the metal case to the board; and an adhesive for applying to the whole circumference of the part where the metal case fixed to the board by the fixing means meets the board to bond the metal case to the board.