"o">+</span> <span class="n">win_len</span><span class="p">]</span> <span class="o">*</span> <span class="n">w</span><span class="o">.</span><span class="n">reshape</span><span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>

        <span class="k">if</span> <span class="n">fft_shift</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
            <span class="n">xi</span> <span class