Internal function for calculating the PSD using Welch's method
welch_fft(data, seg_length, n_fft, noverlap, n_sig, srate)
| data | Object to perform FFT on. |
|---|---|
| seg_length | length of each segment of data. |
| n_fft | length of FFT. |
| noverlap | overlap between segments. |
| n_sig | number of samples total. |
| srate | Sampling rate of the data. |