So. We don't necessarily want to find the  the pitch of the  of the sound but uh  Cuz I have a feeling that  when we look  when we look at the  just at the envelope there is no way you can tell if it 's voiced and unvoiced , if there is some  It 's  it 's easy in clean speech because voiced sound are more low frequency and. So there would be more ,
Yeah.
uh  there is the first formant , which is the larger and then voiced sound are more high frequencies cuz it 's frication and
Right.