Polarization voltage setting of microphones

The invention relates to a comprises at least microphone shell (9) capacitor microphone. The invention end of the capacitor microphone for adjusting the polarizing voltage circuit comprises at least one, is provided with a polarizing voltage adjusting circuit is provided with the is not can the voltage and an adjusting circuit (48), and a digital regulation circuit (47); the digital regulation circuit (47) comprises for of the micro control or a CPLD control electronic device (39); (48) providing a polarizing voltage of the analogue adjusting loop the expected value; and correction factor computational expected value; and columns from the volume of feedback, wherein an adjusting circuit (48) and (39) is connected with a control electronic device.