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/* -*- 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 2005-2006 Christian Landone.
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 CONSTANTQ_H
#define CONSTANTQ_H
#include <vector>
#include "maths/MathAliases.h"
#include "maths/MathUtilities.h"
struct CQConfig{
unsigned int FS; // samplerate
double min; // minimum frequency
double max; // maximum frequency
unsigned int BPO; // bins per octave
double CQThresh; // threshold
};
class ConstantQ {
//public functions incl. sparsekernel so can keep out of loop in main
public:
void process( const double* FFTRe, const double* FFTIm,
double* CQRe, double* CQIm );
ConstantQ( CQConfig Config );
~ConstantQ();
double* process( const double* FFTData );
void sparsekernel();
double hamming(int len, int n) {
double out = 0.54 - 0.46*cos(2*PI*n/len);
return(out);
}
int getnumwin() { return m_numWin;}
double getQ() { return m_dQ;}
int getK() {return m_uK ;}
int getfftlength() { return m_FFTLength;}
int gethop() { return m_hop;}
private:
void initialise( CQConfig Config );
void deInitialise();
double* m_CQdata;
unsigned int m_FS;
double m_FMin;
double m_FMax;
double m_dQ;
double m_CQThresh;
unsigned int m_numWin;
unsigned int m_hop;
unsigned int m_BPO;
unsigned int m_FFTLength;
unsigned int m_uK;
struct SparseKernel {
std::vector<unsigned> is;
std::vector<unsigned> js;
std::vector<double> imag;
std::vector<double> real;
};
SparseKernel *m_sparseKernel;
};
#endif//CONSTANTQ_H
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