def audio_visualize_3d(self):
    t = np.linspace(0, 2. * np.pi, self.window * 2)
    xf = np.cos(t)
    yf = np.sin(t)
    fig = plt.figure()
    ax = fig.gca(projection='3d')
    lf, = ax.plot(xf, yf, np.zeros(self.window * 2), lw=1, color='lightblue')
    ax.set_zlim(-0.2, 1.2)
    ax.set_axis_off()
    plt.show(block=False)
    plt.pause(self.record_delay)

    while self.stream.is_active():
        data = self.stream.read(self.window)
        data_int = struct.unpack(str(self.window * 2) + 'B', data)
        z_detrend = detrend(data_int)
        zf = np.abs(np.fft.fft(z_detrend))
        z_vals = zf / (64 * self.window)
        ind = np.where(z_vals > (np.max(z_vals) + np.min(z_vals)) / 2)
        z_vals[ind[0]] *= 4

        lf.set_xdata(xf)
        lf.set_ydata(yf)
        lf.set_3d_properties(z_vals)

        try:
            ax.figure.canvas.draw()
            ax.figure.canvas.flush_events()
        except TclError:
            self.stream.stop_stream()
            self.stream.close()
            break