Remove-DC-Offset-Before-FFT
Last Update: 2/3/2015
Two methods to remove DC offset from the original signal before performing FFT:
stats col(b);
col(b)-stats.mean
If you need to get the DC offset, open the dialog mentioned in method one, then use the low-pass filter, and set Cutoff Frequency to zero, or use the Mean function to calculate the mean of the signal:
DCOffset = Mean(col(B));
Keywords:DC, FFT, cutoff frequency, low-pass