gusucode.com > 信号处理工具箱 - signal源码程序 > signal\signal\signal\poly2ac.m
function R=poly2ac(a,efinal) %POLY2AC Convert prediction polynomial to autocorrelation sequence. % R=POLY2AC(A,Efinal) returns the autocorrelation sequence, R, based on % the prediction polynomial, A, and the final prediction error, Efinal. % % If A(1) is not equal to 1, POLY2AC normalizes the prediction % polynomial by A(1). % % See also AC2POLY, 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: 1.2 $ $Date: 1998/07/16 15:57:35 $ R = rlevinson(a,efinal); % [EOF] poly2ac.m