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diff --git a/libs/vamp-pyin/MonoNoteParameters.h b/libs/vamp-pyin/MonoNoteParameters.h
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+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    pYIN - A fundamental frequency estimator for monophonic audio
+    Centre for Digital Music, Queen Mary, University of London.
+    
+    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.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef _MONONOTEPARAMETERS_H_
+#define _MONONOTEPARAMETERS_H_
+
+#include <iostream>
+#include <vector>
+#include <exception>
+
+using std::vector;
+
+class MonoNoteParameters
+{
+public:
+    MonoNoteParameters();
+    virtual ~MonoNoteParameters();
+    
+    // model architecture parameters
+    size_t minPitch; // lowest pitch in MIDI notes
+    size_t nPPS; // number of pitches per semitone
+    size_t nS; // number of semitones
+    size_t nSPP; // number of states per pitch
+    size_t n; // number of states (will be calcualted from other parameters)
+    
+    // initial state probabilities
+    vector<double> initPi; 
+    
+    // transition parameters
+    double pAttackSelftrans;
+    double pStableSelftrans;
+    double pStable2Silent;
+    double pSilentSelftrans;
+    double sigma2Note; // standard deviation of next note Gaussian distribution
+    double maxJump;
+    double pInterSelftrans;
+    
+    double priorPitchedProb;
+    double priorWeight;
+
+    double minSemitoneDistance; // minimum distance for a transition
+    
+    double sigmaYinPitchAttack;
+    double sigmaYinPitchStable;
+    double sigmaYinPitchInter;
+    
+    double yinTrust;
+    
+};
+
+#endif