ilt function applies a bandpass filter between [0.67, 100] Hz,
this function uses a zero-phase Butterworth filter with 75 coefficients.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns</dt>
<dd class="field-odd"><p>The filtered ECG signal, 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> 