n.</p>
<p><strong>Parameters</strong></p>
<dl class="simple">
<dt>x<span class="classifier">MTSpec class</span></dt><dd><p>variable with the multitaper information (yk’s)</p>
</dd>
<dt>y<span class="classifier">MTSpec class, optional</span></dt><dd><p>similar to x for a second time series
if y is None, auto-dual frequency is calculated.</p>
</dd>
<dt>fmin<span class="classifier">float, optional</span></dt><dd><p>minimum frequency to calculate the DF spectrum</p>
</dd>
<dt>fmax<span class="classifier">floa