def update_response(self):
""" Update the response plot """
speaker = VentedSpeaker(self.current_driver, self.current_box)
freqs, amplitude = speaker.frequency_response()
self.amplitude_line.set_xdata(freqs)
self.amplitude_line.set_ydata(amplitude)
manufacturer = self.current_driver.manufacturer
model = self.current_driver.model
box_volume = 1e3*self.current_box.Vab
box_tuning = self.current_box.fb
label = '{0} {1} in {2:2g}l / {3}Hz'.format(
manufacturer, model, box_volume, box_tuning)
self.amplitude_line.set_label(label)
self.amplitude_axes.legend(loc='lower right')
self.canvas.draw()
def add_new_response(self):
""" Add an additional response to the plot """
speaker = VentedSpeaker(self.current_driver, self.current_box)
freqs, amplitude = speaker.frequency_response()
self.amplitude_line, = self.amplitude_axes.semilogx(
freqs, amplitude)
manufacturer = self.current_driver.manufacturer
model = self.current_driver.model
box_volume = 1e3*self.current_box.Vab
box_tuning = self.current_box.fb
label = '{0} {1} in {2:2g}l / {3}Hz'.format(
manufacturer, model, box_volume, box_tuning)
self.amplitude_line.set_label(label)
self.amplitude_axes.legend(loc='lower right')
self.set_plot_options()
self.canvas.draw()
def test_cutoff_calculation(self):
driver_db = driver_database.DriverDB.from_file('driver_db.json')
driver = driver_db[0]
box = vented_box.VentedBox(Vab=90.0, fb=43.0, Ql=20.0)
speaker = VentedSpeaker(driver, box)
self.assertAlmostEqual(speaker.f_3(), 36.9606852)
