             delayAU.lowPassCutoff = Float(lowPassCutoff)
             delayAU.wetDryMix = Float(dryWetMix)
     }
+    
+    /// Function to start, play, or activate the node, all do the same thing
+    public func start() {
+        if isStopped {
+            self.avAudioNode = delayAU
+            isStarted = true
+        }
+    }
+    
+    /// Function to start, play, or activate the node, all do the same thing
+    public func play() {
+        start()
+    }
+    
+    /// Function to stop or bypass the node, both are equivalent
+    public func stop() {
+        if isPlaying {
+            self.avAudioNode = self.input!.avAudioNode
+            isStarted = false
+        }
+    }
+    
+    /// Function to stop or bypass the node, both are equivalent
+    public func bypass() {
+        stop()
+    }
 }

        }
    }
    
    /// Initialize the delay node 
    ///
    /// - parameter input: Input audio AKNode to process

        lowPassCutoff: Double = 15000,
        dryWetMix: Double = 50) {
            
            self.input = input
            self.time = NSTimeInterval(Double(time))
            self.feedback = feedback
            self.lowPassCutoff = lowPassCutoff
