scipy.signal._short_time_fft:ShortTimeFFT.from_window

Parameters

win_param: Union[str, tuple, float],

Parameters passed to get_window. For windows with no parameters, it may be a string (e.g., 'hann'), for parametrized windows a tuple, (e.g., ('gaussian', 2.)) or a single float specifying the shape parameter of a kaiser window (i.e. 4. and ('kaiser', 4.) are equal. See get_window for more details.

fs : float

Sampling frequency of input signal. Its relation to the sampling interval T is T = 1 / fs.

nperseg: int

Window length in samples, which corresponds to the m_num.

noverlap: int

Window overlap in samples. It relates to the hop increment by hop = npsereg - noverlap.

symmetric_win: bool

If True then a symmetric window is generated, else a periodic window is generated (default). Though symmetric windows seem for most applications to be more sensible, the default of a periodic windows was chosen to correspond to the default of get_window. This parameter is ignored, if the window name in the window parameter has a suffix '_periodic' or '_symmetric' appended to it (e.g., 'hann_symmetric').

fft_mode : 'twosided', 'centered', 'onesided', 'onesided2X'

Mode of FFT to be used (default 'onesided'). See property fft_mode for details.

mfft: int | None

Length of the FFT used, if a zero padded FFT is desired. If None (default), the length of the window win is used.

scale_to : 'magnitude', 'psd' | None

If not None (default) the window function is scaled, so each STFT column represents either a 'magnitude' or a power spectral density ('psd') spectrum. This parameter sets the property scaling to the same value. See method scale_to for details.

phase_shift : int | None

If set, add a linear phase phase_shift / mfft * f to each frequency f. The default value 0 ensures that there is no phase shift on the zeroth slice (in which t=0 is centered). See property phase_shift for more details.