dsig octdown xsig, iocts, isamps[, idisprd]
wsig noctdft dsig, iprd, ifrqs, iq[, ihann, idbout, idsines]
wsig specaddm wsig1, wsig2[, imul2]
wsig specdiff wsigin
wsig specscal wsigin, ifscale, ifthresh
wsig spechist wsigin,
wsig specfilt wsigin, ifhtim
koct specptrk wsigin, inptls, irollof, iodd,[,interp, ifprd, iwtflg]
ksum specsum wsig[, interp]
specdisp wsig, iprd[, iwtflg]