So it has , like  the spectrogram has , like  Uh , it actually , uh , enhances the onset and offset of  I mean , the  the begin and the end of the speech. So it 's  there seems to be , like , deep valleys in the begin and the end of , like , high - energy regions ,
Mm - hmm.
because the filter has , like , a sort of Mexican - hat type structure.
Mm - hmm.