X xRimAzX New Member Nov 8, 2010 #1 I need help as i am doing a project based on capturing eeg signals that is between 0-30 Hz. Some Description: Theoretical Calculations fixed gain second order HPF Cut off for HPF => 0.502 Hz fixed gain second order LPF Cut off for LPF => 62.5 Hz Í put a 1.5 V reference to offset the output so that it lies in the range of 0 to 3V. Attachments Filter circuits.JPG 103.1 KB · Views: 251
I need help as i am doing a project based on capturing eeg signals that is between 0-30 Hz. Some Description: Theoretical Calculations fixed gain second order HPF Cut off for HPF => 0.502 Hz fixed gain second order LPF Cut off for LPF => 62.5 Hz Í put a 1.5 V reference to offset the output so that it lies in the range of 0 to 3V.
ericgibbs Well-Known Member Most Helpful Member Nov 8, 2010 #2 hi, Download this free Filter designer from TI, recommended. Active Filter Design Application - FILTERPRO - TI Software Folder
hi, Download this free Filter designer from TI, recommended. Active Filter Design Application - FILTERPRO - TI Software Folder
audioguru Well-Known Member Most Helpful Member Nov 8, 2010 #3 Although I did not calculate to see if the frequencies are correct, you made good Butterworth second-order highpass and lowpass Sallen and Key filters.
Although I did not calculate to see if the frequencies are correct, you made good Butterworth second-order highpass and lowpass Sallen and Key filters.
crutschow Well-Known Member Most Helpful Member Nov 8, 2010 #4 Is the filter not working? If so what are the symptoms.