PSDE - PERIODOGRAM POWER SPECTRAL DENSITY ESTIMATION Computes the power spectrum density of a data set by dividing the data into a specified number of segments, applying the time window on every segment, computing the periodogram for every segment and then average all resulting periodograms. PARAMETERS: SIGNAL Input one dimensional signal to be analysed. SEGMENT LENGTH The length of each segment the input data is to be divided into. The peiodogram will be computed for each segment. FFT LENGTH The length of the FFT. If this is not radix two in will be shifted up to the next radix two number. OVERLAP The size of the overlap between the segments. WINDOW TYPE The window type can by hamm, hann, bart or rect. The length of window is determined by the segment length.