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-rw-r--r--libs/qm-dsp/dsp/tempotracking/TempoTrack.cpp1729
1 files changed, 865 insertions, 864 deletions
diff --git a/libs/qm-dsp/dsp/tempotracking/TempoTrack.cpp b/libs/qm-dsp/dsp/tempotracking/TempoTrack.cpp
index c36385f250..389403edaa 100644
--- a/libs/qm-dsp/dsp/tempotracking/TempoTrack.cpp
+++ b/libs/qm-dsp/dsp/tempotracking/TempoTrack.cpp
@@ -1,869 +1,870 @@
-/* -*- 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 2005-2006 Christian Landone.and Matthew Davies.
+/* -*- 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 2005-2006 Christian Landone.and Matthew Davies.
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.
-*/
-
-#include "TempoTrack.h"
-
-#include "maths/MathAliases.h"
-#include "maths/MathUtilities.h"
-
-#include <iostream>
-
-#include <cassert>
-
-//#define DEBUG_TEMPO_TRACK 1
-
-
-#define RAY43VAL
-
-//////////////////////////////////////////////////////////////////////
-// Construction/Destruction
-//////////////////////////////////////////////////////////////////////
-
-TempoTrack::TempoTrack( TTParams Params )
-{
- m_tempoScratch = NULL;
- m_rawDFFrame = NULL;
- m_smoothDFFrame = NULL;
- m_frameACF = NULL;
- m_smoothRCF = NULL;
-
- m_dataLength = 0;
- m_winLength = 0;
- m_lagLength = 0;
-
- m_rayparam = 0;
- m_sigma = 0;
- m_DFWVNnorm = 0;
-
- initialise( Params );
-}
-
-TempoTrack::~TempoTrack()
-{
- deInitialise();
-}
-
-void TempoTrack::initialise( TTParams Params )
-{
- m_winLength = Params.winLength;
- m_lagLength = Params.lagLength;
-
- m_rayparam = 43.0;
- m_sigma = sqrt(3.9017);
- m_DFWVNnorm = exp( ( log( 2.0 ) / m_rayparam ) * ( m_winLength + 2 ) );
-
- m_rawDFFrame = new double[ m_winLength ];
- m_smoothDFFrame = new double[ m_winLength ];
- m_frameACF = new double[ m_winLength ];
- m_tempoScratch = new double[ m_lagLength ];
- m_smoothRCF = new double[ m_lagLength ];
-
-
- unsigned int winPre = Params.WinT.pre;
- unsigned int winPost = Params.WinT.post;
-
- m_DFFramer.configure( m_winLength, m_lagLength );
-
- m_DFPParams.length = m_winLength;
- m_DFPParams.AlphaNormParam = Params.alpha;
- m_DFPParams.LPOrd = Params.LPOrd;
- m_DFPParams.LPACoeffs = Params.LPACoeffs;
- m_DFPParams.LPBCoeffs = Params.LPBCoeffs;
- m_DFPParams.winPre = Params.WinT.pre;
- m_DFPParams.winPost = Params.WinT.post;
- m_DFPParams.isMedianPositive = true;
-
- m_DFConditioning = new DFProcess( m_DFPParams );
-
-
- // these are parameters for smoothing m_tempoScratch
- m_RCFPParams.length = m_lagLength;
- m_RCFPParams.AlphaNormParam = Params.alpha;
- m_RCFPParams.LPOrd = Params.LPOrd;
- m_RCFPParams.LPACoeffs = Params.LPACoeffs;
- m_RCFPParams.LPBCoeffs = Params.LPBCoeffs;
- m_RCFPParams.winPre = Params.WinT.pre;
- m_RCFPParams.winPost = Params.WinT.post;
- m_RCFPParams.isMedianPositive = true;
-
- m_RCFConditioning = new DFProcess( m_RCFPParams );
-
-}
-
-void TempoTrack::deInitialise()
-{
- delete [] m_rawDFFrame;
-
- delete [] m_smoothDFFrame;
-
- delete [] m_smoothRCF;
-
- delete [] m_frameACF;
-
- delete [] m_tempoScratch;
-
- delete m_DFConditioning;
-
- delete m_RCFConditioning;
-
-}
-
-void TempoTrack::createCombFilter(double* Filter, unsigned int winLength, unsigned int TSig, double beatLag)
-{
- unsigned int i;
-
- if( beatLag == 0 )
- {
- for( i = 0; i < winLength; i++ )
- {
- Filter[ i ] = ( ( i + 1 ) / pow( m_rayparam, 2.0) ) * exp( ( -pow(( i + 1 ),2.0 ) / ( 2.0 * pow( m_rayparam, 2.0))));
- }
- }
- else
- {
- m_sigma = beatLag/4;
- for( i = 0; i < winLength; i++ )
- {
- double dlag = (double)(i+1) - beatLag;
- Filter[ i ] = exp(-0.5 * pow(( dlag / m_sigma), 2.0) ) / (sqrt( 2 * PI) * m_sigma);
- }
- }
-}
-
-double TempoTrack::tempoMM(double* ACF, double* weight, int tsig)
-{
-
- double period = 0;
- double maxValRCF = 0.0;
- unsigned int maxIndexRCF = 0;
-
- double* pdPeaks;
-
- unsigned int maxIndexTemp;
- double maxValTemp;
- unsigned int count;
-
- unsigned int numelem,i,j;
- int a, b;
-
- for( i = 0; i < m_lagLength; i++ )
- m_tempoScratch[ i ] = 0.0;
-
- if( tsig == 0 )
- {
- //if time sig is unknown, use metrically unbiased version of Filterbank
- numelem = 4;
- }
- else
- {
- numelem = tsig;
- }
-
-#ifdef DEBUG_TEMPO_TRACK
- std::cerr << "tempoMM: m_winLength = " << m_winLength << ", m_lagLength = " << m_lagLength << ", numelem = " << numelem << std::endl;
-#endif
-
- for(i=1;i<m_lagLength-1;i++)
- {
- //first and last output values are left intentionally as zero
- for (a=1;a<=numelem;a++)
- {
- for(b=(1-a);b<a;b++)
- {
- if( tsig == 0 )
- {
- m_tempoScratch[i] += ACF[a*(i+1)+b-1] * (1.0 / (2.0 * (double)a-1)) * weight[i];
- }
- else
- {
- m_tempoScratch[i] += ACF[a*(i+1)+b-1] * 1 * weight[i];
- }
- }
- }
- }
-
-
- //////////////////////////////////////////////////
- // MODIFIED BEAT PERIOD EXTRACTION //////////////
- /////////////////////////////////////////////////
-
- // find smoothed version of RCF ( as applied to Detection Function)
- m_RCFConditioning->process( m_tempoScratch, m_smoothRCF);
-
- if (tsig != 0) // i.e. in context dependent state
- {
-// NOW FIND MAX INDEX OF ACFOUT
- for( i = 0; i < m_lagLength; i++)
- {
- if( m_tempoScratch[ i ] > maxValRCF)
- {
- maxValRCF = m_tempoScratch[ i ];
- maxIndexRCF = i;
- }
- }
- }
- else // using rayleigh weighting
- {
- vector <vector<double> > rcfMat;
-
- double sumRcf = 0.;
-
- double maxVal = 0.;
- // now find the two values which minimise rcfMat
- double minVal = 0.;
- int p_i = 1; // periodicity for row i;
- int p_j = 1; //periodicity for column j;
-
-
- for ( i=0; i<m_lagLength; i++)
- {
- m_tempoScratch[i] =m_smoothRCF[i];
- }
-
- // normalise m_tempoScratch so that it sums to zero.
- for ( i=0; i<m_lagLength; i++)
- {
- sumRcf += m_tempoScratch[i];
- }
-
- for( i=0; i<m_lagLength; i++)
- {
- m_tempoScratch[i] /= sumRcf;
- }
-
- // create a matrix to store m_tempoScratchValues modified by log2 ratio
- for ( i=0; i<m_lagLength; i++)
- {
- rcfMat.push_back ( vector<double>() ); // adds a new row...
- }
-
- for (i=0; i<m_lagLength; i++)
- {
- for (j=0; j<m_lagLength; j++)
- {
- rcfMat[i].push_back (0.);
- }
- }
-
- // the 'i' and 'j' indices deliberately start from '1' and not '0'
- for ( i=1; i<m_lagLength; i++)
- {
- for (j=1; j<m_lagLength; j++)
- {
- double log2PeriodRatio = log( static_cast<double>(i)/static_cast<double>(j) ) / log(2.0);
- rcfMat[i][j] = ( abs(1.0-abs(log2PeriodRatio)) );
- rcfMat[i][j] += ( 0.01*( 1./(m_tempoScratch[i]+m_tempoScratch[j]) ) );
- }
- }
-
- // set diagonal equal to maximum value in rcfMat
- // we don't want to pick one strong middle peak - we need a combination of two peaks.
-
- for ( i=1; i<m_lagLength; i++)
- {
- for (j=1; j<m_lagLength; j++)
- {
- if (rcfMat[i][j] > maxVal)
- {
- maxVal = rcfMat[i][j];
- }
- }
- }
-
- for ( i=1; i<m_lagLength; i++)
- {
- rcfMat[i][i] = maxVal;
- }
-
- // now find the row and column number which minimise rcfMat
- minVal = maxVal;
-
- for ( i=1; i<m_lagLength; i++)
- {
- for ( j=1; j<m_lagLength; j++)
- {
- if (rcfMat[i][j] < minVal)
- {
- minVal = rcfMat[i][j];
- p_i = i;
- p_j = j;
- }
- }
- }
-
-
- // initially choose p_j (arbitrary) - saves on an else statement
- int beatPeriod = p_j;
- if (m_tempoScratch[p_i] > m_tempoScratch[p_j])
- {
- beatPeriod = p_i;
- }
-
- // now write the output
- maxIndexRCF = static_cast<int>(beatPeriod);
- }
-
-
- double locked = 5168.f / maxIndexRCF;
- if (locked >= 30 && locked <= 180) {
- m_lockedTempo = locked;
- }
-
-#ifdef DEBUG_TEMPO_TRACK
- std::cerr << "tempoMM: locked tempo = " << m_lockedTempo << std::endl;
-#endif
-
- if( tsig == 0 )
- tsig = 4;
-
-
-#ifdef DEBUG_TEMPO_TRACK
-std::cerr << "tempoMM: maxIndexRCF = " << maxIndexRCF << std::endl;
-#endif
-
- if( tsig == 4 )
- {
-#ifdef DEBUG_TEMPO_TRACK
- std::cerr << "tsig == 4" << std::endl;
-#endif
-
- pdPeaks = new double[ 4 ];
- for( i = 0; i < 4; i++ ){ pdPeaks[ i ] = 0.0;}
-
- pdPeaks[ 0 ] = ( double )maxIndexRCF + 1;
-
- maxIndexTemp = 0;
- maxValTemp = 0.0;
- count = 0;
-
- for( i = (2 * maxIndexRCF + 1) - 1; i < (2 * maxIndexRCF + 1) + 2; i++ )
- {
- if( ACF[ i ] > maxValTemp )
- {
- maxValTemp = ACF[ i ];
- maxIndexTemp = count;
- }
- count++;
- }
- pdPeaks[ 1 ] = (double)( maxIndexTemp + 1 + ( (2 * maxIndexRCF + 1 ) - 2 ) + 1 )/2;
-
- maxIndexTemp = 0;
- maxValTemp = 0.0;
- count = 0;
-
- for( i = (3 * maxIndexRCF + 2 ) - 2; i < (3 * maxIndexRCF + 2 ) + 3; i++ )
- {
- if( ACF[ i ] > maxValTemp )
- {
- maxValTemp = ACF[ i ];
- maxIndexTemp = count;
- }
- count++;
- }
- pdPeaks[ 2 ] = (double)( maxIndexTemp + 1 + ( (3 * maxIndexRCF + 2) - 4 ) + 1 )/3;
-
- maxIndexTemp = 0;
- maxValTemp = 0.0;
- count = 0;
-
- for( i = ( 4 * maxIndexRCF + 3) - 3; i < ( 4 * maxIndexRCF + 3) + 4; i++ )
- {
- if( ACF[ i ] > maxValTemp )
- {
- maxValTemp = ACF[ i ];
- maxIndexTemp = count;
- }
- count++;
- }
- pdPeaks[ 3 ] = (double)( maxIndexTemp + 1 + ( (4 * maxIndexRCF + 3) - 9 ) + 1 )/4 ;
-
-
- period = MathUtilities::mean( pdPeaks, 4 );
- }
- else
- {
-#ifdef DEBUG_TEMPO_TRACK
- std::cerr << "tsig != 4" << std::endl;
-#endif
-
- pdPeaks = new double[ 3 ];
- for( i = 0; i < 3; i++ ){ pdPeaks[ i ] = 0.0;}
-
- pdPeaks[ 0 ] = ( double )maxIndexRCF + 1;
-
- maxIndexTemp = 0;
- maxValTemp = 0.0;
- count = 0;
-
- for( i = (2 * maxIndexRCF + 1) - 1; i < (2 * maxIndexRCF + 1) + 2; i++ )
- {
- if( ACF[ i ] > maxValTemp )
- {
- maxValTemp = ACF[ i ];
- maxIndexTemp = count;
- }
- count++;
- }
- pdPeaks[ 1 ] = (double)( maxIndexTemp + 1 + ( (2 * maxIndexRCF + 1 ) - 2 ) + 1 )/2;
-
- maxIndexTemp = 0;
- maxValTemp = 0.0;
- count = 0;
-
- for( i = (3 * maxIndexRCF + 2 ) - 2; i < (3 * maxIndexRCF + 2 ) + 3; i++ )
- {
- if( ACF[ i ] > maxValTemp )
- {
- maxValTemp = ACF[ i ];
- maxIndexTemp = count;
- }
- count++;
- }
- pdPeaks[ 2 ] = (double)( maxIndexTemp + 1 + ( (3 * maxIndexRCF + 2) - 4 ) + 1 )/3;
-
-
- period = MathUtilities::mean( pdPeaks, 3 );
- }
-
- delete [] pdPeaks;
-
- return period;
-}
-
-void TempoTrack::stepDetect( double* periodP, double* periodG, int currentIdx, int* flag )
-{
- double stepthresh = 1 * 3.9017;
-
- if( *flag )
- {
- if(abs(periodG[ currentIdx ] - periodP[ currentIdx ]) > stepthresh)
- {
- // do nuffin'
- }
- }
- else
- {
- if(fabs(periodG[ currentIdx ]-periodP[ currentIdx ]) > stepthresh)
- {
- *flag = 3;
- }
- }
-}
-
-void TempoTrack::constDetect( double* periodP, int currentIdx, int* flag )
-{
- double constthresh = 2 * 3.9017;
-
- if( fabs( 2 * periodP[ currentIdx ] - periodP[ currentIdx - 1] - periodP[ currentIdx - 2] ) < constthresh)
- {
- *flag = 1;
- }
- else
- {
- *flag = 0;
- }
-}
-
-int TempoTrack::findMeter(double *ACF, unsigned int len, double period)
-{
- int i;
- int p = (int)MathUtilities::round( period );
- int tsig;
-
- double Energy_3 = 0.0;
- double Energy_4 = 0.0;
-
- double temp3A = 0.0;
- double temp3B = 0.0;
- double temp4A = 0.0;
- double temp4B = 0.0;
-
- double* dbf = new double[ len ]; int t = 0;
- for( unsigned int u = 0; u < len; u++ ){ dbf[ u ] = 0.0; }
-
- if( (double)len < 6 * p + 2 )
- {
- for( i = ( 3 * p - 2 ); i < ( 3 * p + 2 ) + 1; i++ )
- {
- temp3A += ACF[ i ];
- dbf[ t++ ] = ACF[ i ];
- }
-
- for( i = ( 4 * p - 2 ); i < ( 4 * p + 2 ) + 1; i++ )
- {
- temp4A += ACF[ i ];
- }
-
- Energy_3 = temp3A;
- Energy_4 = temp4A;
- }
- else
- {
- for( i = ( 3 * p - 2 ); i < ( 3 * p + 2 ) + 1; i++ )
- {
- temp3A += ACF[ i ];
- }
-
- for( i = ( 4 * p - 2 ); i < ( 4 * p + 2 ) + 1; i++ )
- {
- temp4A += ACF[ i ];
- }
-
- for( i = ( 6 * p - 2 ); i < ( 6 * p + 2 ) + 1; i++ )
- {
- temp3B += ACF[ i ];
- }
-
- for( i = ( 2 * p - 2 ); i < ( 2 * p + 2 ) + 1; i++ )
- {
- temp4B += ACF[ i ];
- }
-
- Energy_3 = temp3A + temp3B;
- Energy_4 = temp4A + temp4B;
- }
-
- if (Energy_3 > Energy_4)
- {
- tsig = 3;
- }
- else
- {
- tsig = 4;
- }
-
-
- return tsig;
-}
-
-void TempoTrack::createPhaseExtractor(double *Filter, unsigned int winLength, double period, unsigned int fsp, unsigned int lastBeat)
-{
- int p = (int)MathUtilities::round( period );
- int predictedOffset = 0;
-
-#ifdef DEBUG_TEMPO_TRACK
- std::cerr << "TempoTrack::createPhaseExtractor: period = " << period << ", p = " << p << std::endl;
-#endif
-
- if (p > 10000) {
- std::cerr << "TempoTrack::createPhaseExtractor: WARNING! Highly implausible period value " << p << "!" << std::endl;
- period = 5168 / 120;
- }
-
- double* phaseScratch = new double[ p*2 + 2 ];
- for (int i = 0; i < p*2 + 2; ++i) phaseScratch[i] = 0.0;
-
-
- if( lastBeat != 0 )
- {
- lastBeat = (int)MathUtilities::round((double)lastBeat );///(double)winLength);
-
- predictedOffset = lastBeat + p - fsp;
-
- if (predictedOffset < 0)
- {
- lastBeat = 0;
- }
- }
-
- if( lastBeat != 0 )
- {
- int mu = p;
- double sigma = (double)p/8;
- double PhaseMin = 0.0;
- double PhaseMax = 0.0;
- unsigned int scratchLength = p*2;
- double temp = 0.0;
-
- for( int i = 0; i < scratchLength; i++ )
- {
- phaseScratch[ i ] = exp( -0.5 * pow( ( i - mu ) / sigma, 2 ) ) / ( sqrt( 2*PI ) *sigma );
- }
-
- MathUtilities::getFrameMinMax( phaseScratch, scratchLength, &PhaseMin, &PhaseMax );
-
- for(int i = 0; i < scratchLength; i ++)
- {
- temp = phaseScratch[ i ];
- phaseScratch[ i ] = (temp - PhaseMin)/PhaseMax;
- }
-
-#ifdef DEBUG_TEMPO_TRACK
- std::cerr << "predictedOffset = " << predictedOffset << std::endl;
-#endif
-
- unsigned int index = 0;
- for (int i = p - ( predictedOffset - 1); i < p + ( p - predictedOffset) + 1; i++)
- {
-#ifdef DEBUG_TEMPO_TRACK
- std::cerr << "assigning to filter index " << index << " (size = " << p*2 << ")" << " value " << phaseScratch[i] << " from scratch index " << i << std::endl;
-#endif
- Filter[ index++ ] = phaseScratch[ i ];
- }
- }
- else
- {
- for( int i = 0; i < p; i ++)
- {
- Filter[ i ] = 1;
- }
- }
-
- delete [] phaseScratch;
-}
-
-int TempoTrack::phaseMM(double *DF, double *weighting, unsigned int winLength, double period)
-{
- int alignment = 0;
- int p = (int)MathUtilities::round( period );
-
- double temp = 0.0;
-
- double* y = new double[ winLength ];
- double* align = new double[ p ];
-
- for( int i = 0; i < winLength; i++ )
- {
- y[ i ] = (double)( -i + winLength )/(double)winLength;
- y[ i ] = pow(y [i ],2.0); // raise to power 2.
- }
-
- for( int o = 0; o < p; o++ )
- {
- temp = 0.0;
- for(int i = 1 + (o - 1); i< winLength; i += (p + 1))
- {
- temp = temp + DF[ i ] * y[ i ];
- }
- align[ o ] = temp * weighting[ o ];
- }
-
-
- double valTemp = 0.0;
- for(int i = 0; i < p; i++)
- {
- if( align[ i ] > valTemp )
- {
- valTemp = align[ i ];
- alignment = i;
- }
- }
-
- delete [] y;
- delete [] align;
-
- return alignment;
-}
-
-int TempoTrack::beatPredict(unsigned int FSP0, double alignment, double period, unsigned int step )
-{
- int beat = 0;
-
- int p = (int)MathUtilities::round( period );
- int align = (int)MathUtilities::round( alignment );
- int FSP = (int)MathUtilities::round( FSP0 );
-
- int FEP = FSP + ( step );
-
- beat = FSP + align;
-
- m_beats.push_back( beat );
-
- while( beat + p < FEP )
- {
- beat += p;
-
- m_beats.push_back( beat );
- }
-
- return beat;
-}
-
-
-
-vector<int> TempoTrack::process( vector <double> DF,
- vector <double> *tempoReturn )
-{
- m_dataLength = DF.size();
-
- m_lockedTempo = 0.0;
-
- double period = 0.0;
- int stepFlag = 0;
- int constFlag = 0;
- int FSP = 0;
- int tsig = 0;
- int lastBeat = 0;
-
- vector <double> causalDF;
-
- causalDF = DF;
-
- //Prepare Causal Extension DFData
- unsigned int DFCLength = m_dataLength + m_winLength;
-
- for( unsigned int j = 0; j < m_winLength; j++ )
- {
- causalDF.push_back( 0 );
- }
-
-
- double* RW = new double[ m_lagLength ];
- for( unsigned int clear = 0; clear < m_lagLength; clear++){ RW[ clear ] = 0.0;}
-
- double* GW = new double[ m_lagLength ];
- for(unsigned int clear = 0; clear < m_lagLength; clear++){ GW[ clear ] = 0.0;}
-
- double* PW = new double[ m_lagLength ];
- for(unsigned clear = 0; clear < m_lagLength; clear++){ PW[ clear ] = 0.0;}
-
- m_DFFramer.setSource( &causalDF[0], m_dataLength );
-
- unsigned int TTFrames = m_DFFramer.getMaxNoFrames();
-
-#ifdef DEBUG_TEMPO_TRACK
- std::cerr << "TTFrames = " << TTFrames << std::endl;
-#endif
-
- double* periodP = new double[ TTFrames ];
- for(unsigned clear = 0; clear < TTFrames; clear++){ periodP[ clear ] = 0.0;}
-
- double* periodG = new double[ TTFrames ];
- for(unsigned clear = 0; clear < TTFrames; clear++){ periodG[ clear ] = 0.0;}
-
- double* alignment = new double[ TTFrames ];
- for(unsigned clear = 0; clear < TTFrames; clear++){ alignment[ clear ] = 0.0;}
-
- m_beats.clear();
-
- createCombFilter( RW, m_lagLength, 0, 0 );
-
- int TTLoopIndex = 0;
-
- for( unsigned int i = 0; i < TTFrames; i++ )
- {
- m_DFFramer.getFrame( m_rawDFFrame );
-
- m_DFConditioning->process( m_rawDFFrame, m_smoothDFFrame );
-
- m_correlator.doAutoUnBiased( m_smoothDFFrame, m_frameACF, m_winLength );
-
- periodP[ TTLoopIndex ] = tempoMM( m_frameACF, RW, 0 );
-
- if( GW[ 0 ] != 0 )
- {
- periodG[ TTLoopIndex ] = tempoMM( m_frameACF, GW, tsig );
- }
- else
- {
- periodG[ TTLoopIndex ] = 0.0;
- }
-
- stepDetect( periodP, periodG, TTLoopIndex, &stepFlag );
-
- if( stepFlag == 1)
- {
- constDetect( periodP, TTLoopIndex, &constFlag );
- stepFlag = 0;
- }
- else
- {
- stepFlag -= 1;
- }
-
- if( stepFlag < 0 )
- {
- stepFlag = 0;
- }
-
- if( constFlag != 0)
- {
- tsig = findMeter( m_frameACF, m_winLength, periodP[ TTLoopIndex ] );
-
- createCombFilter( GW, m_lagLength, tsig, periodP[ TTLoopIndex ] );
-
- periodG[ TTLoopIndex ] = tempoMM( m_frameACF, GW, tsig );
-
- period = periodG[ TTLoopIndex ];
-
-#ifdef DEBUG_TEMPO_TRACK
- std::cerr << "TempoTrack::process: constFlag == " << constFlag << ", TTLoopIndex = " << TTLoopIndex << ", period from periodG = " << period << std::endl;
-#endif
-
- createPhaseExtractor( PW, m_winLength, period, FSP, 0 );
-
- constFlag = 0;
-
- }
- else
- {
- if( GW[ 0 ] != 0 )
- {
- period = periodG[ TTLoopIndex ];
-
-#ifdef DEBUG_TEMPO_TRACK
- std::cerr << "TempoTrack::process: GW[0] == " << GW[0] << ", TTLoopIndex = " << TTLoopIndex << ", period from periodG = " << period << std::endl;
-#endif
-
- if (period > 10000) {
- std::cerr << "TempoTrack::process: WARNING! Highly implausible period value " << period << "!" << std::endl;
- std::cerr << "periodG contains (of " << TTFrames << " frames): " << std::endl;
- for (int i = 0; i < TTLoopIndex + 3 && i < TTFrames; ++i) {
- std::cerr << i << " -> " << periodG[i] << std::endl;
- }
- std::cerr << "periodP contains (of " << TTFrames << " frames): " << std::endl;
- for (int i = 0; i < TTLoopIndex + 3 && i < TTFrames; ++i) {
- std::cerr << i << " -> " << periodP[i] << std::endl;
- }
- period = 5168 / 120;
- }
-
- createPhaseExtractor( PW, m_winLength, period, FSP, lastBeat );
-
- }
- else
- {
- period = periodP[ TTLoopIndex ];
-
-#ifdef DEBUG_TEMPO_TRACK
- std::cerr << "TempoTrack::process: GW[0] == " << GW[0] << ", TTLoopIndex = " << TTLoopIndex << ", period from periodP = " << period << std::endl;
-#endif
-
- createPhaseExtractor( PW, m_winLength, period, FSP, 0 );
- }
- }
-
- alignment[ TTLoopIndex ] = phaseMM( m_rawDFFrame, PW, m_winLength, period );
-
- lastBeat = beatPredict(FSP, alignment[ TTLoopIndex ], period, m_lagLength );
-
- FSP += (m_lagLength);
-
- if (tempoReturn) tempoReturn->push_back(m_lockedTempo);
-
- TTLoopIndex++;
- }
-
-
- delete [] periodP;
- delete [] periodG;
- delete [] alignment;
-
- delete [] RW;
- delete [] GW;
- delete [] PW;
-
- return m_beats;
-}
+ COPYING included with this distribution for more information.
+*/
+
+#include "TempoTrack.h"
+
+#include "maths/MathAliases.h"
+#include "maths/MathUtilities.h"
+
+#include <iostream>
+
+#include <cassert>
+
+//#define DEBUG_TEMPO_TRACK 1
+
+
+#define RAY43VAL
+
+//////////////////////////////////////////////////////////////////////
+// Construction/Destruction
+//////////////////////////////////////////////////////////////////////
+
+TempoTrack::TempoTrack( TTParams Params )
+{
+ m_tempoScratch = NULL;
+ m_rawDFFrame = NULL;
+ m_smoothDFFrame = NULL;
+ m_frameACF = NULL;
+ m_smoothRCF = NULL;
+
+ m_dataLength = 0;
+ m_winLength = 0;
+ m_lagLength = 0;
+
+ m_rayparam = 0;
+ m_sigma = 0;
+ m_DFWVNnorm = 0;
+
+ initialise( Params );
+}
+
+TempoTrack::~TempoTrack()
+{
+ deInitialise();
+}
+
+void TempoTrack::initialise( TTParams Params )
+{
+ m_winLength = Params.winLength;
+ m_lagLength = Params.lagLength;
+
+ m_rayparam = 43.0;
+ m_sigma = sqrt(3.9017);
+ m_DFWVNnorm = exp( ( log( 2.0 ) / m_rayparam ) * ( m_winLength + 2 ) );
+
+ m_rawDFFrame = new double[ m_winLength ];
+ m_smoothDFFrame = new double[ m_winLength ];
+ m_frameACF = new double[ m_winLength ];
+ m_tempoScratch = new double[ m_lagLength ];
+ m_smoothRCF = new double[ m_lagLength ];
+
+
+ unsigned int winPre = Params.WinT.pre;
+ unsigned int winPost = Params.WinT.post;
+
+ m_DFFramer.configure( m_winLength, m_lagLength );
+
+ m_DFPParams.length = m_winLength;
+ m_DFPParams.AlphaNormParam = Params.alpha;
+ m_DFPParams.LPOrd = Params.LPOrd;
+ m_DFPParams.LPACoeffs = Params.LPACoeffs;
+ m_DFPParams.LPBCoeffs = Params.LPBCoeffs;
+ m_DFPParams.winPre = Params.WinT.pre;
+ m_DFPParams.winPost = Params.WinT.post;
+ m_DFPParams.isMedianPositive = true;
+
+ m_DFConditioning = new DFProcess( m_DFPParams );
+
+
+ // these are parameters for smoothing m_tempoScratch
+ m_RCFPParams.length = m_lagLength;
+ m_RCFPParams.AlphaNormParam = Params.alpha;
+ m_RCFPParams.LPOrd = Params.LPOrd;
+ m_RCFPParams.LPACoeffs = Params.LPACoeffs;
+ m_RCFPParams.LPBCoeffs = Params.LPBCoeffs;
+ m_RCFPParams.winPre = Params.WinT.pre;
+ m_RCFPParams.winPost = Params.WinT.post;
+ m_RCFPParams.isMedianPositive = true;
+
+ m_RCFConditioning = new DFProcess( m_RCFPParams );
+
+}
+
+void TempoTrack::deInitialise()
+{
+ delete [] m_rawDFFrame;
+
+ delete [] m_smoothDFFrame;
+
+ delete [] m_smoothRCF;
+
+ delete [] m_frameACF;
+
+ delete [] m_tempoScratch;
+
+ delete m_DFConditioning;
+
+ delete m_RCFConditioning;
+
+}
+
+void TempoTrack::createCombFilter(double* Filter, unsigned int winLength, unsigned int TSig, double beatLag)
+{
+ unsigned int i;
+
+ if( beatLag == 0 )
+ {
+ for( i = 0; i < winLength; i++ )
+ {
+ Filter[ i ] = ( ( i + 1 ) / pow( m_rayparam, 2.0) ) * exp( ( -pow(( i + 1 ),2.0 ) / ( 2.0 * pow( m_rayparam, 2.0))));
+ }
+ }
+ else
+ {
+ m_sigma = beatLag/4;
+ for( i = 0; i < winLength; i++ )
+ {
+ double dlag = (double)(i+1) - beatLag;
+ Filter[ i ] = exp(-0.5 * pow(( dlag / m_sigma), 2.0) ) / (sqrt( 2 * PI) * m_sigma);
+ }
+ }
+}
+
+double TempoTrack::tempoMM(double* ACF, double* weight, int tsig)
+{
+
+ double period = 0;
+ double maxValRCF = 0.0;
+ unsigned int maxIndexRCF = 0;
+
+ double* pdPeaks;
+
+ unsigned int maxIndexTemp;
+ double maxValTemp;
+ unsigned int count;
+
+ unsigned int numelem,i,j;
+ int a, b;
+
+ for( i = 0; i < m_lagLength; i++ )
+ m_tempoScratch[ i ] = 0.0;
+
+ if( tsig == 0 )
+ {
+ //if time sig is unknown, use metrically unbiased version of Filterbank
+ numelem = 4;
+ }
+ else
+ {
+ numelem = tsig;
+ }
+
+#ifdef DEBUG_TEMPO_TRACK
+ std::cerr << "tempoMM: m_winLength = " << m_winLength << ", m_lagLength = " << m_lagLength << ", numelem = " << numelem << std::endl;
+#endif
+
+ for(i=1;i<m_lagLength-1;i++)
+ {
+ //first and last output values are left intentionally as zero
+ for (a=1;a<=numelem;a++)
+ {
+ for(b=(1-a);b<a;b++)
+ {
+ if( tsig == 0 )
+ {
+ m_tempoScratch[i] += ACF[a*(i+1)+b-1] * (1.0 / (2.0 * (double)a-1)) * weight[i];
+ }
+ else
+ {
+ m_tempoScratch[i] += ACF[a*(i+1)+b-1] * 1 * weight[i];
+ }
+ }
+ }
+ }
+
+
+ //////////////////////////////////////////////////
+ // MODIFIED BEAT PERIOD EXTRACTION //////////////
+ /////////////////////////////////////////////////
+
+ // find smoothed version of RCF ( as applied to Detection Function)
+ m_RCFConditioning->process( m_tempoScratch, m_smoothRCF);
+
+ if (tsig != 0) // i.e. in context dependent state
+ {
+// NOW FIND MAX INDEX OF ACFOUT
+ for( i = 0; i < m_lagLength; i++)
+ {
+ if( m_tempoScratch[ i ] > maxValRCF)
+ {
+ maxValRCF = m_tempoScratch[ i ];
+ maxIndexRCF = i;
+ }
+ }
+ }
+ else // using rayleigh weighting
+ {
+ vector <vector<double> > rcfMat;
+
+ double sumRcf = 0.;
+
+ double maxVal = 0.;
+ // now find the two values which minimise rcfMat
+ double minVal = 0.;
+ int p_i = 1; // periodicity for row i;
+ int p_j = 1; //periodicity for column j;
+
+
+ for ( i=0; i<m_lagLength; i++)
+ {
+ m_tempoScratch[i] =m_smoothRCF[i];
+ }
+
+ // normalise m_tempoScratch so that it sums to zero.
+ for ( i=0; i<m_lagLength; i++)
+ {
+ sumRcf += m_tempoScratch[i];
+ }
+
+ for( i=0; i<m_lagLength; i++)
+ {
+ m_tempoScratch[i] /= sumRcf;
+ }
+
+ // create a matrix to store m_tempoScratchValues modified by log2 ratio
+ for ( i=0; i<m_lagLength; i++)
+ {
+ rcfMat.push_back ( vector<double>() ); // adds a new row...
+ }
+
+ for (i=0; i<m_lagLength; i++)
+ {
+ for (j=0; j<m_lagLength; j++)
+ {
+ rcfMat[i].push_back (0.);
+ }
+ }
+
+ // the 'i' and 'j' indices deliberately start from '1' and not '0'
+ for ( i=1; i<m_lagLength; i++)
+ {
+ for (j=1; j<m_lagLength; j++)
+ {
+ double log2PeriodRatio = log( static_cast<double>(i)/static_cast<double>(j) ) / log(2.0);
+ rcfMat[i][j] = ( abs(1.0-abs(log2PeriodRatio)) );
+ rcfMat[i][j] += ( 0.01*( 1./(m_tempoScratch[i]+m_tempoScratch[j]) ) );
+ }
+ }
+
+ // set diagonal equal to maximum value in rcfMat
+ // we don't want to pick one strong middle peak - we need a combination of two peaks.
+
+ for ( i=1; i<m_lagLength; i++)
+ {
+ for (j=1; j<m_lagLength; j++)
+ {
+ if (rcfMat[i][j] > maxVal)
+ {
+ maxVal = rcfMat[i][j];
+ }
+ }
+ }
+
+ for ( i=1; i<m_lagLength; i++)
+ {
+ rcfMat[i][i] = maxVal;
+ }
+
+ // now find the row and column number which minimise rcfMat
+ minVal = maxVal;
+
+ for ( i=1; i<m_lagLength; i++)
+ {
+ for ( j=1; j<m_lagLength; j++)
+ {
+ if (rcfMat[i][j] < minVal)
+ {
+ minVal = rcfMat[i][j];
+ p_i = i;
+ p_j = j;
+ }
+ }
+ }
+
+
+ // initially choose p_j (arbitrary) - saves on an else statement
+ int beatPeriod = p_j;
+ if (m_tempoScratch[p_i] > m_tempoScratch[p_j])
+ {
+ beatPeriod = p_i;
+ }
+
+ // now write the output
+ maxIndexRCF = static_cast<int>(beatPeriod);
+ }
+
+
+ double locked = 5168.f / maxIndexRCF;
+ if (locked >= 30 && locked <= 180) {
+ m_lockedTempo = locked;
+ }
+
+#ifdef DEBUG_TEMPO_TRACK
+ std::cerr << "tempoMM: locked tempo = " << m_lockedTempo << std::endl;
+#endif
+
+ if( tsig == 0 )
+ tsig = 4;
+
+
+#ifdef DEBUG_TEMPO_TRACK
+std::cerr << "tempoMM: maxIndexRCF = " << maxIndexRCF << std::endl;
+#endif
+
+ if( tsig == 4 )
+ {
+#ifdef DEBUG_TEMPO_TRACK
+ std::cerr << "tsig == 4" << std::endl;
+#endif
+
+ pdPeaks = new double[ 4 ];
+ for( i = 0; i < 4; i++ ){ pdPeaks[ i ] = 0.0;}
+
+ pdPeaks[ 0 ] = ( double )maxIndexRCF + 1;
+
+ maxIndexTemp = 0;
+ maxValTemp = 0.0;
+ count = 0;
+
+ for( i = (2 * maxIndexRCF + 1) - 1; i < (2 * maxIndexRCF + 1) + 2; i++ )
+ {
+ if( ACF[ i ] > maxValTemp )
+ {
+ maxValTemp = ACF[ i ];
+ maxIndexTemp = count;
+ }
+ count++;
+ }
+ pdPeaks[ 1 ] = (double)( maxIndexTemp + 1 + ( (2 * maxIndexRCF + 1 ) - 2 ) + 1 )/2;
+
+ maxIndexTemp = 0;
+ maxValTemp = 0.0;
+ count = 0;
+
+ for( i = (3 * maxIndexRCF + 2 ) - 2; i < (3 * maxIndexRCF + 2 ) + 3; i++ )
+ {
+ if( ACF[ i ] > maxValTemp )
+ {
+ maxValTemp = ACF[ i ];
+ maxIndexTemp = count;
+ }
+ count++;
+ }
+ pdPeaks[ 2 ] = (double)( maxIndexTemp + 1 + ( (3 * maxIndexRCF + 2) - 4 ) + 1 )/3;
+
+ maxIndexTemp = 0;
+ maxValTemp = 0.0;
+ count = 0;
+
+ for( i = ( 4 * maxIndexRCF + 3) - 3; i < ( 4 * maxIndexRCF + 3) + 4; i++ )
+ {
+ if( ACF[ i ] > maxValTemp )
+ {
+ maxValTemp = ACF[ i ];
+ maxIndexTemp = count;
+ }
+ count++;
+ }
+ pdPeaks[ 3 ] = (double)( maxIndexTemp + 1 + ( (4 * maxIndexRCF + 3) - 9 ) + 1 )/4 ;
+
+
+ period = MathUtilities::mean( pdPeaks, 4 );
+ }
+ else
+ {
+#ifdef DEBUG_TEMPO_TRACK
+ std::cerr << "tsig != 4" << std::endl;
+#endif
+
+ pdPeaks = new double[ 3 ];
+ for( i = 0; i < 3; i++ ){ pdPeaks[ i ] = 0.0;}
+
+ pdPeaks[ 0 ] = ( double )maxIndexRCF + 1;
+
+ maxIndexTemp = 0;
+ maxValTemp = 0.0;
+ count = 0;
+
+ for( i = (2 * maxIndexRCF + 1) - 1; i < (2 * maxIndexRCF + 1) + 2; i++ )
+ {
+ if( ACF[ i ] > maxValTemp )
+ {
+ maxValTemp = ACF[ i ];
+ maxIndexTemp = count;
+ }
+ count++;
+ }
+ pdPeaks[ 1 ] = (double)( maxIndexTemp + 1 + ( (2 * maxIndexRCF + 1 ) - 2 ) + 1 )/2;
+
+ maxIndexTemp = 0;
+ maxValTemp = 0.0;
+ count = 0;
+
+ for( i = (3 * maxIndexRCF + 2 ) - 2; i < (3 * maxIndexRCF + 2 ) + 3; i++ )
+ {
+ if( ACF[ i ] > maxValTemp )
+ {
+ maxValTemp = ACF[ i ];
+ maxIndexTemp = count;
+ }
+ count++;
+ }
+ pdPeaks[ 2 ] = (double)( maxIndexTemp + 1 + ( (3 * maxIndexRCF + 2) - 4 ) + 1 )/3;
+
+
+ period = MathUtilities::mean( pdPeaks, 3 );
+ }
+
+ delete [] pdPeaks;
+
+ return period;
+}
+
+void TempoTrack::stepDetect( double* periodP, double* periodG, int currentIdx, int* flag )
+{
+ double stepthresh = 1 * 3.9017;
+
+ if( *flag )
+ {
+ if(abs(periodG[ currentIdx ] - periodP[ currentIdx ]) > stepthresh)
+ {
+ // do nuffin'
+ }
+ }
+ else
+ {
+ if(fabs(periodG[ currentIdx ]-periodP[ currentIdx ]) > stepthresh)
+ {
+ *flag = 3;
+ }
+ }
+}
+
+void TempoTrack::constDetect( double* periodP, int currentIdx, int* flag )
+{
+ double constthresh = 2 * 3.9017;
+
+ if( fabs( 2 * periodP[ currentIdx ] - periodP[ currentIdx - 1] - periodP[ currentIdx - 2] ) < constthresh)
+ {
+ *flag = 1;
+ }
+ else
+ {
+ *flag = 0;
+ }
+}
+
+int TempoTrack::findMeter(double *ACF, unsigned int len, double period)
+{
+ int i;
+ int p = (int)MathUtilities::round( period );
+ int tsig;
+
+ double Energy_3 = 0.0;
+ double Energy_4 = 0.0;
+
+ double temp3A = 0.0;
+ double temp3B = 0.0;
+ double temp4A = 0.0;
+ double temp4B = 0.0;
+
+ double* dbf = new double[ len ]; int t = 0;
+ for( unsigned int u = 0; u < len; u++ ){ dbf[ u ] = 0.0; }
+
+ if( (double)len < 6 * p + 2 )
+ {
+ for( i = ( 3 * p - 2 ); i < ( 3 * p + 2 ) + 1; i++ )
+ {
+ temp3A += ACF[ i ];
+ dbf[ t++ ] = ACF[ i ];
+ }
+
+ for( i = ( 4 * p - 2 ); i < ( 4 * p + 2 ) + 1; i++ )
+ {
+ temp4A += ACF[ i ];
+ }
+
+ Energy_3 = temp3A;
+ Energy_4 = temp4A;
+ }
+ else
+ {
+ for( i = ( 3 * p - 2 ); i < ( 3 * p + 2 ) + 1; i++ )
+ {
+ temp3A += ACF[ i ];
+ }
+
+ for( i = ( 4 * p - 2 ); i < ( 4 * p + 2 ) + 1; i++ )
+ {
+ temp4A += ACF[ i ];
+ }
+
+ for( i = ( 6 * p - 2 ); i < ( 6 * p + 2 ) + 1; i++ )
+ {
+ temp3B += ACF[ i ];
+ }
+
+ for( i = ( 2 * p - 2 ); i < ( 2 * p + 2 ) + 1; i++ )
+ {
+ temp4B += ACF[ i ];
+ }
+
+ Energy_3 = temp3A + temp3B;
+ Energy_4 = temp4A + temp4B;
+ }
+
+ if (Energy_3 > Energy_4)
+ {
+ tsig = 3;
+ }
+ else
+ {
+ tsig = 4;
+ }
+
+
+ return tsig;
+}
+
+void TempoTrack::createPhaseExtractor(double *Filter, unsigned int winLength, double period, unsigned int fsp, unsigned int lastBeat)
+{
+ int p = (int)MathUtilities::round( period );
+ int predictedOffset = 0;
+
+#ifdef DEBUG_TEMPO_TRACK
+ std::cerr << "TempoTrack::createPhaseExtractor: period = " << period << ", p = " << p << std::endl;
+#endif
+
+ if (p > 10000) {
+ std::cerr << "TempoTrack::createPhaseExtractor: WARNING! Highly implausible period value " << p << "!" << std::endl;
+ period = 5168 / 120;
+ }
+
+ double* phaseScratch = new double[ p*2 + 2 ];
+ for (int i = 0; i < p*2 + 2; ++i) phaseScratch[i] = 0.0;
+
+
+ if( lastBeat != 0 )
+ {
+ lastBeat = (int)MathUtilities::round((double)lastBeat );///(double)winLength);
+
+ predictedOffset = lastBeat + p - fsp;
+
+ if (predictedOffset < 0)
+ {
+ lastBeat = 0;
+ }
+ }
+
+ if( lastBeat != 0 )
+ {
+ int mu = p;
+ double sigma = (double)p/8;
+ double PhaseMin = 0.0;
+ double PhaseMax = 0.0;
+ unsigned int scratchLength = p*2;
+ double temp = 0.0;
+
+ for( int i = 0; i < scratchLength; i++ )
+ {
+ phaseScratch[ i ] = exp( -0.5 * pow( ( i - mu ) / sigma, 2 ) ) / ( sqrt( 2*PI ) *sigma );
+ }
+
+ MathUtilities::getFrameMinMax( phaseScratch, scratchLength, &PhaseMin, &PhaseMax );
+
+ for(int i = 0; i < scratchLength; i ++)
+ {
+ temp = phaseScratch[ i ];
+ phaseScratch[ i ] = (temp - PhaseMin)/PhaseMax;
+ }
+
+#ifdef DEBUG_TEMPO_TRACK
+ std::cerr << "predictedOffset = " << predictedOffset << std::endl;
+#endif
+
+ unsigned int index = 0;
+ for (int i = p - ( predictedOffset - 1); i < p + ( p - predictedOffset) + 1; i++)
+ {
+#ifdef DEBUG_TEMPO_TRACK
+ std::cerr << "assigning to filter index " << index << " (size = " << p*2 << ")" << " value " << phaseScratch[i] << " from scratch index " << i << std::endl;
+#endif
+ Filter[ index++ ] = phaseScratch[ i ];
+ }
+ }
+ else
+ {
+ for( int i = 0; i < p; i ++)
+ {
+ Filter[ i ] = 1;
+ }
+ }
+
+ delete [] phaseScratch;
+}
+
+int TempoTrack::phaseMM(double *DF, double *weighting, unsigned int winLength, double period)
+{
+ int alignment = 0;
+ int p = (int)MathUtilities::round( period );
+
+ double temp = 0.0;
+
+ double* y = new double[ winLength ];
+ double* align = new double[ p ];
+
+ for( int i = 0; i < winLength; i++ )
+ {
+ y[ i ] = (double)( -i + winLength )/(double)winLength;
+ y[ i ] = pow(y [i ],2.0); // raise to power 2.
+ }
+
+ for( int o = 0; o < p; o++ )
+ {
+ temp = 0.0;
+ for(int i = 1 + (o - 1); i< winLength; i += (p + 1))
+ {
+ temp = temp + DF[ i ] * y[ i ];
+ }
+ align[ o ] = temp * weighting[ o ];
+ }
+
+
+ double valTemp = 0.0;
+ for(int i = 0; i < p; i++)
+ {
+ if( align[ i ] > valTemp )
+ {
+ valTemp = align[ i ];
+ alignment = i;
+ }
+ }
+
+ delete [] y;
+ delete [] align;
+
+ return alignment;
+}
+
+int TempoTrack::beatPredict(unsigned int FSP0, double alignment, double period, unsigned int step )
+{
+ int beat = 0;
+
+ int p = (int)MathUtilities::round( period );
+ int align = (int)MathUtilities::round( alignment );
+ int FSP = (int)MathUtilities::round( FSP0 );
+
+ int FEP = FSP + ( step );
+
+ beat = FSP + align;
+
+ m_beats.push_back( beat );
+
+ while( beat + p < FEP )
+ {
+ beat += p;
+
+ m_beats.push_back( beat );
+ }
+
+ return beat;
+}
+
+
+
+vector<int> TempoTrack::process( vector <double> DF,
+ vector <double> *tempoReturn )
+{
+ m_dataLength = DF.size();
+
+ m_lockedTempo = 0.0;
+
+ double period = 0.0;
+ int stepFlag = 0;
+ int constFlag = 0;
+ int FSP = 0;
+ int tsig = 0;
+ int lastBeat = 0;
+
+ vector <double> causalDF;
+
+ causalDF = DF;
+
+ //Prepare Causal Extension DFData
+ unsigned int DFCLength = m_dataLength + m_winLength;
+
+ for( unsigned int j = 0; j < m_winLength; j++ )
+ {
+ causalDF.push_back( 0 );
+ }
+
+
+ double* RW = new double[ m_lagLength ];
+ for( unsigned int clear = 0; clear < m_lagLength; clear++){ RW[ clear ] = 0.0;}
+
+ double* GW = new double[ m_lagLength ];
+ for(unsigned int clear = 0; clear < m_lagLength; clear++){ GW[ clear ] = 0.0;}
+
+ double* PW = new double[ m_lagLength ];
+ for(unsigned clear = 0; clear < m_lagLength; clear++){ PW[ clear ] = 0.0;}
+
+ m_DFFramer.setSource( &causalDF[0], m_dataLength );
+
+ unsigned int TTFrames = m_DFFramer.getMaxNoFrames();
+
+#ifdef DEBUG_TEMPO_TRACK
+ std::cerr << "TTFrames = " << TTFrames << std::endl;
+#endif
+
+ double* periodP = new double[ TTFrames ];
+ for(unsigned clear = 0; clear < TTFrames; clear++){ periodP[ clear ] = 0.0;}
+
+ double* periodG = new double[ TTFrames ];
+ for(unsigned clear = 0; clear < TTFrames; clear++){ periodG[ clear ] = 0.0;}
+
+ double* alignment = new double[ TTFrames ];
+ for(unsigned clear = 0; clear < TTFrames; clear++){ alignment[ clear ] = 0.0;}
+
+ m_beats.clear();
+
+ createCombFilter( RW, m_lagLength, 0, 0 );
+
+ int TTLoopIndex = 0;
+
+ for( unsigned int i = 0; i < TTFrames; i++ )
+ {
+ m_DFFramer.getFrame( m_rawDFFrame );
+
+ m_DFConditioning->process( m_rawDFFrame, m_smoothDFFrame );
+
+ m_correlator.doAutoUnBiased( m_smoothDFFrame, m_frameACF, m_winLength );
+
+ periodP[ TTLoopIndex ] = tempoMM( m_frameACF, RW, 0 );
+
+ if( GW[ 0 ] != 0 )
+ {
+ periodG[ TTLoopIndex ] = tempoMM( m_frameACF, GW, tsig );
+ }
+ else
+ {
+ periodG[ TTLoopIndex ] = 0.0;
+ }
+
+ stepDetect( periodP, periodG, TTLoopIndex, &stepFlag );
+
+ if( stepFlag == 1)
+ {
+ constDetect( periodP, TTLoopIndex, &constFlag );
+ stepFlag = 0;
+ }
+ else
+ {
+ stepFlag -= 1;
+ }
+
+ if( stepFlag < 0 )
+ {
+ stepFlag = 0;
+ }
+
+ if( constFlag != 0)
+ {
+ tsig = findMeter( m_frameACF, m_winLength, periodP[ TTLoopIndex ] );
+
+ createCombFilter( GW, m_lagLength, tsig, periodP[ TTLoopIndex ] );
+
+ periodG[ TTLoopIndex ] = tempoMM( m_frameACF, GW, tsig );
+
+ period = periodG[ TTLoopIndex ];
+
+#ifdef DEBUG_TEMPO_TRACK
+ std::cerr << "TempoTrack::process: constFlag == " << constFlag << ", TTLoopIndex = " << TTLoopIndex << ", period from periodG = " << period << std::endl;
+#endif
+
+ createPhaseExtractor( PW, m_winLength, period, FSP, 0 );
+
+ constFlag = 0;
+
+ }
+ else
+ {
+ if( GW[ 0 ] != 0 )
+ {
+ period = periodG[ TTLoopIndex ];
+
+#ifdef DEBUG_TEMPO_TRACK
+ std::cerr << "TempoTrack::process: GW[0] == " << GW[0] << ", TTLoopIndex = " << TTLoopIndex << ", period from periodG = " << period << std::endl;
+#endif
+
+ if (period > 10000) {
+ std::cerr << "TempoTrack::process: WARNING! Highly implausible period value " << period << "!" << std::endl;
+ std::cerr << "periodG contains (of " << TTFrames << " frames): " << std::endl;
+ for (int i = 0; i < TTLoopIndex + 3 && i < TTFrames; ++i) {
+ std::cerr << i << " -> " << periodG[i] << std::endl;
+ }
+ std::cerr << "periodP contains (of " << TTFrames << " frames): " << std::endl;
+ for (int i = 0; i < TTLoopIndex + 3 && i < TTFrames; ++i) {
+ std::cerr << i << " -> " << periodP[i] << std::endl;
+ }
+ period = 5168 / 120;
+ }
+
+ createPhaseExtractor( PW, m_winLength, period, FSP, lastBeat );
+
+ }
+ else
+ {
+ period = periodP[ TTLoopIndex ];
+
+#ifdef DEBUG_TEMPO_TRACK
+ std::cerr << "TempoTrack::process: GW[0] == " << GW[0] << ", TTLoopIndex = " << TTLoopIndex << ", period from periodP = " << period << std::endl;
+#endif
+
+ createPhaseExtractor( PW, m_winLength, period, FSP, 0 );
+ }
+ }
+
+ alignment[ TTLoopIndex ] = phaseMM( m_rawDFFrame, PW, m_winLength, period );
+
+ lastBeat = beatPredict(FSP, alignment[ TTLoopIndex ], period, m_lagLength );
+
+ FSP += (m_lagLength);
+
+ if (tempoReturn) tempoReturn->push_back(m_lockedTempo);
+
+ TTLoopIndex++;
+ }
+
+
+ delete [] periodP;
+ delete [] periodG;
+ delete [] alignment;
+
+ delete [] RW;
+ delete [] GW;
+ delete [] PW;
+
+ return m_beats;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-20 01:28:05 +0000