scale_to#
- ShortTimeFFT.scale_to(scaling)[source]#
Scale window to obtain ‘magnitude’ or ‘psd’ scaling for the STFT.
The window of a ‘magnitude’ spectrum has an integral of one, i.e., unit area for non-negative windows. This ensures that absolute the values of spectrum does not change if the length of the window changes (given the input signal is stationary).
To represent the power spectral density (‘psd’) for varying length windows the area of the absolute square of the window needs to be unity.
The
scaling
property shows the current scaling. The propertiesfac_magnitude
andfac_psd
show the scaling factors required to scale the STFT values to a magnitude or a psd spectrum.This method is called, if the initializer parameter
scale_to
is set.See also
fac_magnitude
Scaling factor for to a magnitude spectrum.
fac_psd
Scaling factor for to a power spectral density spectrum.
fft_mode
Mode of utilized FFT
scaling
Normalization applied to the window function.
ShortTimeFFT
Class this method belongs to.