public void stateChanged(ChangeEvent e) {
JSlider sliderCutoff = (JSlider) e.getSource();
int cutoff = (int) sliderCutoff.getValue();
filter.setCutoff((double) cutoff / 4000.0d);
}
public void stateChanged(ChangeEvent e) {
JSlider sliderResonance = (JSlider) e.getSource();
int ripple = (int) sliderResonance.getValue();
filter.setRipple((double) ripple / 2.0d);
}
public void actionPerformed(ActionEvent e) {
String actionCommand = e.getActionCommand();
if (actionCommand == "Low-pass") filter.setLowpass(true);
else if (actionCommand == "High-pass") filter.setLowpass(false);
}