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+/***************************************************/
+/*! \class NRev
+    \brief CCRMA's NRev reverberator class.
+
+    This class is derived from the CLM NRev
+    function, which is based on the use of
+    networks of simple allpass and comb delay
+    filters.  This particular arrangement consists
+    of 6 comb filters in parallel, followed by 3
+    allpass filters, a lowpass filter, and another
+    allpass in series, followed by two allpass
+    filters in parallel with corresponding right
+    and left outputs.
+
+    by Perry R. Cook and Gary P. Scavone, 1995 - 2005.
+*/
+/***************************************************/
+
+#ifndef STK_NREV_H
+#define STK_NREV_H
+
+#include "Effect.h" 
+#include "Delay.h" 
+
+namespace Nyq
+{
+
+class NRev : public Effect
+{
+ public:
+  //! Class constructor taking a T60 decay time argument (one second default value).
+  NRev( StkFloat T60 = 1.0 );
+
+  //! Class destructor.
+  ~NRev();
+
+  //! Reset and clear all internal state.
+  void clear();
+
+  //! Set the reverberation T60 decay time.
+  void setT60( StkFloat T60 );
+
+ protected:
+
+  StkFloat computeSample( StkFloat input );
+
+  Delay allpassDelays_[8];
+  Delay combDelays_[6];
+  StkFloat allpassCoefficient_;
+  StkFloat combCoefficient_[6];
+	StkFloat lowpassState_;
+
+};
+
+} // namespace Nyq
+
+#endif
+