uot;</span><span class="p">)</span>
<span class="n">ax0</span><span class="o">.</span><span class="n">set_title</span><span class="p">(</span><span class="s2">&quot;Pure noise&quot;</span><span class="p">)</span>

<span class="n">ax1</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="n">noisy_signals</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>
<span class="n">ax1</span><span class="o">.</span><span class="n">plot</span><span cla