n class="sd">    Returns</span>
<span class="sd">    -------</span>
<span class="sd">    y : np.ndarray [shape=(L,1)], real - valued</span>
<span class="sd">        The time-domain signal.</span>
<span class="sd">    &quot;&quot;&quot;</span>

    <span class="c1"># Pre-calculations</span>
    <span class="n">num_of_frames</span> <span class="o">=</span> <span class="n">spec</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>

 