interval. Default: 1.</p></li>
<li><p><strong>start_freq</strong> (float, optional): The starting frequency in Hz. Default: 31.25.</p></li>
<li><p><strong>end_freq</strong> (float, optional): The ending frequency in Hz. Default: 16000.</p></li>
</ul>
</dd>
<dt><strong>Returns</strong>:</dt><dd><ul class="simple">
<li><p>tuple: A tuple containing the center frequencies and shelving crossover frequencies in Hz.</p></li>
</ul>
</dd>
</dl>
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="f