Design of Digital Filter of Cancelling 50HZ Noise / 医疗卫生装备

ABSTRACT

Objective To design a bandstop digital filter for cancelling the 50HZ noise. Methods Procedure and FDATool method were used in processing. Results The filter was tested by a blended sine wave, the experimental result showed that the filter could cancel the 50HZ noise. Conclusion This filter may eliminate a random noise except the 50HZ noise by modifying the procedure simply.