>
<span class="sd">            frequency: float - frequency normalized to Nyquist in [-1.0, 1.0).</span>
<span class="sd">            rate: float - in [0.0, 1.0].</span>
<span class="sd">        &quot;&quot;&quot;</span>

        <span class="k">if</span> <span class="p">(</span><span class="n">frequency</span> <span class="o">&lt;</span> <span class="o">-</span><span class="mf">1.0</span><span class="p">)</span> <span class="ow">or</span> <span class="p">(</span><span class="n">frequency</span> <span class