For emilinating the interference introduced by 50Hz power transmission lines in the recording of ECG and EEG signals, a Notch Filter was selected because it removes the power-line noise only, figure 1. In the case when the frequency of noise is not constant at exactly 50Hz the use of the Notch Filer
For emilinating the interference introduced by 50Hz power transmission lines in the recording of ECG and EEG signals, a Notch Filter was selected because it removes the power-line noise only, figure 1. In the case when the frequency of noise is not constant at exactly 50Hz the use of the Notch Filer