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diff --git a/muse2/plugins/doublechorus/simplechorusmodel.h b/muse2/plugins/doublechorus/simplechorusmodel.h
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+//===========================================================================
+//
+//    simplechorus
+//
+//    Version 0.0.1
+//
+//
+//
+//
+//  Copyright (c) 2006 Nil Geisweiller
+//
+//
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA or point your web browser to http://www.gnu.org.
+//===========================================================================
+
+#ifndef __SIMPLECHORUSMODEL_H
+#define __SIMPLECHORUSMODEL_H
+
+#define MAXBUFFERLENGTH 192000
+#define MAXSINUSRESOLUTION 192000
+#define MINFREQ 0.05 //in Hz
+#define MAXFREQ 5.0 //in Hz
+#define EARSDISTANCE 0.12 //in meter
+#define MIDSOURCEDISTANCE 2.0 //in meter
+#define MAXDEPTH 1.0 //in meter, radius
+#define SOUNDSPEED 330.0 //in meter per second
+#define MINDELAYSEC 0.01 //in second
+#define MAXDELAYSEC 1.0 //in second
+#define COEFFILTER 0.97576 //0.26795
+#define PANAMP 0.75
+//with cutoff = samplerate/256
+//following (2-cos(x)) - sqrt((2-cos(x))^2 - 1) with x = 2*pi*cutoff/samplerate
+//#define M_PI 3.14159265358979
+
+class SimpleChorusModel {
+ private :
+  //parameters
+  float _pan;
+  float _LFOFreq;
+  float _depth;
+  //parameter state
+  float _sampleRate;
+  float _depthAmp; 
+  float _leftAmp;
+  float _rightAmp;
+  float _filterCoef1;
+  float _filterCoef2;
+  int _leftMidDistance; //distance of the left micro in samples
+  int _rightMidDistance; //distance of the right micro in samples
+  //state
+  float _inct;
+  float _index; //time at the scale of sampleRate
+  float _leftBuffer[MAXBUFFERLENGTH];
+  float _rightBuffer[MAXBUFFERLENGTH];
+  float _ocsDistance; //in sample, distance of the micro with initial position 
+  int _past_position_left;
+  int _past_position_right;
+  int _position;
+ public :
+  static int useCount;
+  static float sinus[MAXSINUSRESOLUTION];
+
+
+  void process_chorus(float leftInput, float rightInput,
+		      float* leftOutput, float* rightOutput);
+
+  void setPan(float);
+  void setLFOFreq(float);
+  void setDepth(float);
+  void setSampleRate(float);
+  float getPan();
+  float getLFOFreq();
+  float getDepth();
+
+  void setChorus();
+
+  SimpleChorusModel(float samplerate);
+  ~SimpleChorusModel();
+  
+};
+
+#endif