comparison dsp/tonal/ChangeDetectionFunction.h @ 225:49844bc8a895

* Queen Mary C++ DSP library

+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    QM DSP Library
+
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2006 Martin Gasser.
+    All rights reserved.
+*/
+
+#ifndef _CHANGEDETECTIONFUNCTION_
+#define _CHANGEDETECTIONFUNCTION_
+
+#define DEBUG_CHANGE_DETECTION_FUNCTION 1
+
+#include "TCSgram.h"
+
+#include <valarray>
+using std::valarray;
+
+typedef	valarray<double> ChangeDistance;
+
+struct ChangeDFConfig
+{
+	int smoothingWidth;
+};
+
+class ChangeDetectionFunction
+{
+public:
+	ChangeDetectionFunction(ChangeDFConfig);
+	~ChangeDetectionFunction();
+	ChangeDistance process(const TCSGram& rTCSGram);
+private:
+	void setFilterWidth(const int iWidth);
+	
+private:
+	valarray<double> m_vaGaussian;
+	double m_dFilterSigma;
+	int m_iFilterWidth;
+};
+
+#endif // _CHANGDETECTIONFUNCTION_