PrivacyScanData/target/visualize/audio_visualize_1.py

def audio_visualize_1d(self):
    xf = np.linspace(20, self.rate / 2, self.window)
    fig, ax = plt.subplots(figsize=(14, 5))
    lf, = ax.semilogx(xf, np.zeros(self.window), lw=1, color='lightblue')
    ax.set_ylim(-0.5, 1.5)
    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)
        y_detrend = detrend(data_int)
        box = np.ones(self.fwhm) / self.fwhm
        y_smooth = np.convolve(y_detrend, box, mode='same')
        yft = np.abs(np.fft.fft(y_smooth))
        y_vals = yft[:self.window] / (64 * self.window)
        ind = np.where(y_vals > (np.max(y_vals) + np.min(y_vals)) / 2)
        y_vals[ind[0]] *= 4

        lf.set_ydata(y_vals)

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