eelbrain.psd_welch

eelbrain.psd_welch(ndvar, fmin=0, fmax=inf, n_fft=256, n_overlap=0, n_per_seg=None)

Power spectral density with Welch’s method

Parameters:

ndvar (NDVar (..., time, ...)) – Data with time dimension.
fmin (scalar) – Lower bound of the frequencies of interest.
fmax (scalar) – Upper bound of the frequencies of interest.
n_fft (int) – Length of the FFT in samples (default 256).
n_overlap (int) – Overlap between segments in samples (default 0).
n_per_seg (int | None) – Length of each Welch segment in samples. Smaller n_per_seg result in smoother PSD estimates (default n_fft).

Returns:

psd – Power spectral density.

Return type:

NDVar (…, frequency)

Notes