armcov This function uses the modified covariance method to fit a pth-order autoregressive (AR) model to the input signal x a=armcov(x,p) [a,e] = armcov(x,p) x: input signal p: order a: output of an AR system driven by white noise e: variance estimate This function uses the modified covariance method to fit a pth-order autoregressive (AR) model to the input signal x.