(d,m,n): return the polynomial , which is constructed from .__D1GetPy__

Actually, , the first n-term of the Taylor expandsion.(d,m,n,digits:=15): return a mask of the form: with__D1ComplexTight__

n must be odd, for n > 5, return a numerical values mask, use digits to control the precision of the mask.(d,n): A special case for D1ComplexTight(d,n,n-1) with n even. return (poly,Pb,az) where__D1ComplexTightOne__

poly is the mask, az is a symmetric polynomial, Pb is constructed from the polyphase of poly so that it is paraunitary. Then one can

use Pb and matrix extension to obtain the high-pass filters so that together with the low-pass filter they form a tightframelet filter bank.

**List of Commands**