PERANCANGAN FILTER DIGITAL PADA FETAL DOPPLER

Abstract

Fetal Doppler is a device  that can be used to detect fetal heart rate with age of 1112 weeks. The presence of noise at the output of an effect on fetal doppler fetal doppler reading of the results. So that the digital filter should be added to obtain fetal heart signal better.

Has created digital filtering algorithms Band Pass Filters applied to the aircraft fetal doppler to determine the frequency content of the signal at any point of time in fetal heart rate signal.

Output from the Fetal Doppler which has undergone a digital filter of signals that have not undergone filtering, gained a lot of visible frequencies above 100 Hz. Output frequency of the signal that has undergone filtration, lots of visible frequencies 2-3 Hz.