Signal feature extraction (DE and PSD)

Code for extracting DE (differential entropy) and PSD (power spectral density) feature of signals.

Matlab and python versions are provided.

input:  data [n*m]          n electrodes, m time points
        stft_para.stftn     frequency domain sampling rate
        stft_para.fStart    start frequency of each frequency band
        stft_para.fEnd      end frequency of each frequency band
        stft_para.window    window length of each sample point(seconds)
        stft_para.fs        original frequency
output: psd,DE [n*l*k]        n electrodes, l windows, k frequency bands