         modulatingMultiplier: Float = 1,
         modulationIndex: Float = 1,
         amplitude: Float = 1) {
-            
+
         self.baseFrequency = baseFrequency
         self.carrierMultiplier = carrierMultiplier
         self.modulatingMultiplier = modulatingMultiplier

                }
            }
        }

    }
}

        }

        guard let tree = internalAU?.parameterTree else { return }
            
        baseFrequencyParameter        = tree.valueForKey("baseFrequency")        as? AUParameter
        carrierMultiplierParameter    = tree.valueForKey("carrierMultiplier")    as? AUParameter
        modulatingMultiplierParameter = tree.valueForKey("modulatingMultiplier") as? AUParameter
