diff dsp/tempotracking/TempoTrackV2.h @ 277:09bceb0aeff6

* Add Matthew's newer beat tracking implementation

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dsp/tempotracking/TempoTrackV2.h	Tue Jan 20 15:01:01 2009 +0000
@@ -0,0 +1,48 @@
+/* -*- 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 2008-2009 Matthew Davies and QMUL.
+    All rights reserved.
+*/
+
+
+#ifndef TEMPOTRACKV2_H
+#define TEMPOTRACKV2_H
+
+#include <vector>
+
+using std::vector;
+
+class TempoTrackV2  
+{
+public:
+    TempoTrackV2();
+    ~TempoTrackV2();
+
+    void calculateBeatPeriod(const vector<double> &df,
+                             vector<double> &beatPeriod);
+
+    void calculateBeats(const vector<double> &df,
+                        const vector<double> &beatPeriod,
+                        vector<double> &beats);
+
+private:
+    typedef vector<int> i_vec_t;
+    typedef vector<vector<int> > i_mat_t;
+    typedef vector<double> d_vec_t;
+    typedef vector<vector<double> > d_mat_t;
+
+    void adapt_thresh(d_vec_t &df);
+    double mean_array(const d_vec_t &dfin, int start, int end);
+    void filter_df(d_vec_t &df);
+    void get_rcf(const d_vec_t &dfframe, const d_vec_t &wv, d_vec_t &rcf);
+    void viterbi_decode(const d_mat_t &rcfmat, const d_vec_t &wv, d_vec_t &bp);
+    double get_max_val(const d_vec_t &df);
+    int get_max_ind(const d_vec_t &df);
+    void normalise_vec(d_vec_t &df);
+};
+
+#endif