Internal function for calculating the PSD using Welch's method. Hardcoded to
use Hamming window.
welch_fft(data, seg_length, n_fft, noverlap, n_sig, srate)
Arguments
- 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.