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function [a,efinal]=ac2poly(R) %AC2POLY Convert autocorrelation sequence to prediction polynomial. % [A,Efinal]=AC2POLY(R) returns the prediction polynomial, A, and the final % prediction error, Efinal, based on the autocorrelation sequence, R. % % See also POLY2AC, POLY2RC, RC2POLY, RC2AC, AC2RC. % References: S. Kay, Modern Spectral Estimation, % Prentice Hall, N.J., 1987, Chapter 6. % % Author(s): A. Ramasubramanian % Copyright (c) 1988-98 by The MathWorks, Inc. % $Revision: 1.1 $ $Date: 1998/07/13 19:03:23 $ % Use levinson recursion for this. Note that matrix inversion % could be used for small orders. [a,efinal] = levinson(R); % [EOF] ac2poly.m