def create_spec(filename,input):
    plt.interactive(False)
    clip, sample_rate = librosa.load(input+filename + '.m4a', sr=None)
    fig = plt.figure(figsize=[0.72,0.72])
    ax = fig.add_subplot(111)
    ax.axes.get_xaxis().set_visible(False)
    ax.axes.get_yaxis().set_visible(False)
    ax.set_frame_on(False)
    S = librosa.feature.melspectrogram(y=clip, sr=sample_rate)
    librosa.display.specshow(librosa.power_to_db(S, ref=np.max))
    plt.savefig(input+filename+ '.png', dpi=400, bbox_inches='tight',pad_inches=0)
    plt.close()
    fig.clf()
    plt.close(fig)
    plt.close('all')