mne.time_frequency.morlet

mne.time_frequency.morlet(sfreq, freqs, n_cycles=7.0, sigma=None, zero_mean=False)

Compute Morlet wavelets for the given frequency range.

Parameters

sfreqfloat

The sampling Frequency.

freqsarray

Frequency range of interest (1 x Frequencies).

n_cyclesfloat | array of float, default 7.0

Number of cycles. Fixed number or one per frequency.

sigmafloat, default None

It controls the width of the wavelet ie its temporal resolution. If sigma is None the temporal resolution is adapted with the frequency like for all wavelet transform. The higher the frequency the shorter is the wavelet. If sigma is fixed the temporal resolution is fixed like for the short time Fourier transform and the number of oscillations increases with the frequency.

zero_meanbool, default False

Make sure the wavelet has a mean of zero.

Returns

Wslist of array

The wavelets time series.

Examples using mne.time_frequency.morlet

Background information on filtering

mne.time_frequency.dpss_windows mne.time_frequency.stft