</span>

<span class="sd">    win_beta : int</span>
<span class="sd">        exponent of sin^beta window</span>

<span class="sd">    Fs : int</span>
<span class="sd">        Sampling rate of audio signals x and y</span>

<span class="sd">    filt_len : int</span>
<span class="sd">        number of samples for envelope modifying function</span>

<span class="sd">    Returns</span>
<span class="sd">    -------</span>
<span class="sd">    y_spec_env_X : np.ndarray [shape=(N,)], real - valued</span>
<span clas