 with shape (L, N) when L is the number of channels or leads and N is the number of samples.</p>
</dd>
</dl>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">filtered_ecg_rec</span> <span class="o">=</span> <span class="n">pre</span><span class="o">.</span><span class="n">notch</span><span class="p">(</span><span class="n">n_freq</span><span class="o">=</span><span class="mi">60</span><span class="p">)</span>
</pre></div>
</div>
</dd></dl>

<dl class="py met