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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.
*/
#include "Correlation.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
Correlation::Correlation()
{
}
Correlation::~Correlation()
{
}
void Correlation::doAutoUnBiased(double *src, double *dst, unsigned int length)
{
double tmp = 0.0;
double outVal = 0.0;
unsigned int i,j;
for( i = 0; i < length; i++)
{
for( j = i; j < length; j++)
{
tmp += src[ j-i ] * src[ j ];
}
outVal = tmp / ( length - i );
if( outVal <= 0 )
dst[ i ] = EPS;
else
dst[ i ] = outVal;
tmp = 0.0;
}
}
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