mne_denoise.qa.geometric_mean_psd_ratio

mne_denoise.qa.geometric_mean_psd_ratio(freqs: ndarray, psd_before: ndarray, psd_after: ndarray, fmin: float = 1.0, fmax: float = 45.0) → ndarray

Compute the geometric mean of psd_after / psd_before over a frequency range.

Parameters:

freqsndarray, shape (n_freqs,)

Frequency vector in Hz.

psd_before, psd_afterndarray, shape (n_freqs,) or (n_channels, n_freqs)

PSDs before and after cleaning.

fmin, fmaxfloat, default=1.0, 45.0

Inclusive frequency bounds in Hz.

Returns:

float or ndarray

Scalar for 1-D input, otherwise one value per channel. Values below one indicate net attenuation; an empty mask returns one. PSDs are floored at 1e-30 before logarithms.