mne.time_frequency.stft¶
- mne.time_frequency.stft(x, wsize, tstep=None, verbose=None)[source]¶
STFT Short-Term Fourier Transform using a sine window.
The transformation is designed to be a tight frame that can be perfectly inverted. It only returns the positive frequencies.
- Parameters
- x
array, shape (n_signals, n_times) Containing multi-channels signal.
- wsize
int Length of the STFT window in samples (must be a multiple of 4).
- tstep
int Step between successive windows in samples (must be a multiple of 2, a divider of wsize and smaller than wsize/2) (default: wsize/2).
- verbosebool,
str,int, orNone If not None, override default verbose level (see
mne.verbose()and Logging documentation for more). If used, it should be passed as a keyword-argument only.
- x
- Returns
- X
array, shape (n_signals, wsize // 2 + 1, n_step) STFT coefficients for positive frequencies with
n_step = ceil(T / tstep).
- X