Convert reflection coefficients to autocorrelation sequence
r = rc2ac(k,r0)
r = rc2ac(k,r0) finds the autocorrelation coefficients, r, of the output of the discrete-time prediction error filter from the lattice-form reflection coefficients k and initial zero-lag autocorrelation r0.
Determine the autocorrelation sequence that corresponds to a given vector, k, of reflection coefficients and an initial zero-lag autocorrelation given by r0.
k = [0.3090 0.9800 0.0031 0.0082 -0.0082]; r0 = 0.1; a = rc2ac(k,r0)
a = 0.1000 -0.0309 -0.0791 0.0787 0.0294 -0.0950