It is quite common to come accross STFT obtained as a FFT of the windowed part without the circshift peak alignment which is othervise done for the 'timeinv' convention. The effect of the missing circshift is that there is a coefficient modulation. If the missing circshift is exactly half of the FFT length, the modulation is by pi which is just a series of sign changes 1,-1,1,-1,1,...
Introduce the LTFAT_POPULAR phase convention in order to be compatible with the existing libraries.
It is quite common to come accross STFT obtained as a FFT of the windowed part without the circshift peak alignment which is othervise done for the 'timeinv' convention. The effect of the missing circshift is that there is a coefficient modulation. If the missing circshift is exactly half of the FFT length, the modulation is by pi which is just a series of sign changes 1,-1,1,-1,1,...
Introduce the LTFAT_POPULAR phase convention in order to be compatible with the existing libraries.