butter\achButterworth_lowpassimg.m
......\achiButterworth_highpassimgr.m
......\bafrmhiiifirnumbpass_imphas.m
......\basfreqmethifirnumhpass_implhas.m
......\bilinearzshift_numfil.m
......\buttordsmul_passbfreqz.m
......\chebypmusic_spr.m
......\chebyunifasym_finulopass.m
......\datestbutter_pburg.m
......\datestbutter_pburgXN.spt
......\datestfilter_designm.m
......\digitalfilbutterord_phfreq.m
butter