


converts AR-polynomial into reflection coefficients
[RC,R0] = poly2rc(A [,Efinal])
INPUT:
A AR polynomial, each row represents one polynomial
Efinal is the final prediction error variance (default value 1)
OUTPUT
RC reflection coefficients
R0 is the variance (autocovariance at lag=0) based on the
prediction error
see also ACOVF ACORF AR2RC RC2AR DURLEV AC2POLY, POLY2RC, RC2POLY, RC2AC, AC2RC, POLY2AC