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