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|None Control verbosity of the logging output. If
None, use the default verbosity level. See the logging documentation andmne.verbose()for details. Should only be passed as a keyword argument.
- x
- Returns
- X
array, shape (n_signals, wsize // 2 + 1, n_step) STFT coefficients for positive frequencies with
n_step = ceil(T / tstep).
- X