c@225: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
c@225: 
c@225: /*
c@225:     QM DSP Library
c@225: 
c@225:     Centre for Digital Music, Queen Mary, University of London.
c@309:     This file 2005-2006 Christian Landone.
c@309: 
c@309:     This program is free software; you can redistribute it and/or
c@309:     modify it under the terms of the GNU General Public License as
c@309:     published by the Free Software Foundation; either version 2 of the
c@309:     License, or (at your option) any later version.  See the file
c@309:     COPYING included with this distribution for more information.
c@225: */
c@225: 
c@225: #ifndef CONSTANTQ_H
c@225: #define CONSTANTQ_H
c@225: 
c@225: #include <vector>
c@241: #include "maths/MathAliases.h"
c@241: #include "maths/MathUtilities.h"
c@225: 
c@225: struct CQConfig{
c@245:     unsigned int FS;   // samplerate
c@245:     double min;        // minimum frequency
c@245:     double max;        // maximum frequency
c@245:     unsigned int BPO;  // bins per octave
c@245:     double CQThresh;   // threshold
c@225: };
c@225: 
c@225: class ConstantQ {
c@225: 	
c@225: //public functions incl. sparsekernel so can keep out of loop in main
c@225: public:
c@257:     void process( const double* FFTRe, const double* FFTIm,
c@257:                   double* CQRe, double* CQIm );
c@225: 
c@225:     ConstantQ( CQConfig Config );
c@225:     ~ConstantQ();
c@225: 
c@257:     double* process( const double* FFTData );
c@225: 
c@225:     void sparsekernel();
c@225: 
c@225:     double hamming(int len, int n) {
c@225: 	double out = 0.54 - 0.46*cos(2*PI*n/len);
c@225: 	return(out);
c@225:     }
c@225: 	
c@225:     int getnumwin() { return m_numWin;}
c@225:     double getQ() { return m_dQ;}
c@225:     int getK() {return m_uK ;}
c@225:     int getfftlength() { return m_FFTLength;}
c@225:     int gethop() { return m_hop;}
c@225: 
c@225: private:
c@225:     void initialise( CQConfig Config );
c@225:     void deInitialise();
c@225: 	
c@225:     double* m_CQdata;
c@225:     unsigned int m_FS;
c@225:     double m_FMin;
c@225:     double m_FMax;
c@225:     double m_dQ;
c@225:     double m_CQThresh;
c@225:     unsigned int m_numWin;
c@225:     unsigned int m_hop;
c@225:     unsigned int m_BPO;
c@225:     unsigned int m_FFTLength;
c@225:     unsigned int m_uK;
c@276: 
c@276:     struct SparseKernel {
c@276:         std::vector<unsigned> is;
c@276:         std::vector<unsigned> js;
c@276:         std::vector<double> imag;
c@276:         std::vector<double> real;
c@276:     };
c@276: 
c@276:     SparseKernel *m_sparseKernel;
c@225: };
c@225: 
c@225: 
c@225: #endif//CONSTANTQ_H
c@225: