n class="ident">denf</span></span>(<span>R, na)</span>
</code></dt>
<dd>
<div class="desc"><p>Compute order NA denominator A from covariances R(0)&hellip;R(nr).</p></div>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">def denf(R, na):
    &#34;&#34;&#34;Compute order NA denominator A from covariances R(0)...R(nr).&#34;&#34;&#34;
    nr = np.max(np.size(R))
    Rm = toeplitz(R[na:nr - 1], R[na:0:-1])
    Rhs = - R[na + 1:nr]
    A = np.concatenate(
   