// Constructor // Sets time constant to unity and the order to unity public LowPassPassive() { super("Passive Low Pass Filter"); super.setSnumer(new ComplexPoly(1.0D)); super.setSdenom(new ComplexPoly(1.0D, 1.0D)); super.setZtransformMethod(1); super.addDeadTimeExtras(); this.timeConstant = 1.0D; }