an class="p">(</span><span class="n">dp</span><span class="p">),</span><span class="w"> </span><span class="k">dimension</span><span class="p">(</span><span class="n">size</span><span class="p">(</span><span class="nb">signal</span><span class="p">,</span><span class="w"> </span><span class="mi">1</span><span class="p">),</span><span class="w"> </span><span class="n">size</span><span class="p">(</span><span class="nb">signal</span><span class="p">,</span><span class="w"> </span><span class="mi">2</span><spa