Why does the LEVINSON function not require the auto-correlation value R(0) in Signal Processing Toolbox 6.9 (R2008a)?
The "Algorithm" section of the documentation for the LEVINSON function says: levinson solves the symmetric Toeplitz system of linear equations ... where r = [r(1) ... r(n+1)] is the input auto-correlation vector Clearly, the zeroth lag correlation value should be a part of the calculation, but it does not appear in the input vector "r".
Neeta Dsouza answered .
2025-11-20
help levinson at the MATLAB prompt, as the following text is displayed: Input R is typically a vector of auto-correlation coefficients with lag 0 as the first element.