CLAM-Development
1.1
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00001 /* 00002 * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG) 00003 * UNIVERSITAT POMPEU FABRA 00004 * 00005 * 00006 * This program is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation; either version 2 of the License, or 00009 * (at your option) any later version. 00010 * 00011 * This program is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 * GNU General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU General Public License 00017 * along with this program; if not, write to the Free Software 00018 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00019 * 00020 */ 00021 00022 #include "SMSOddEvenHarmonicRatio.hxx" 00023 #include "ProcessingFactory.hxx" 00024 00025 00026 00027 namespace CLAM 00028 { 00029 00030 namespace Hidden 00031 { 00032 static const char * metadata[] = { 00033 "key", "SMSOddEvenHarmonicRatio", 00034 "category", "SMS Transformations", 00035 "description", "SMSOddEvenHarmonicRatio", 00036 0 00037 }; 00038 static FactoryRegistrator<ProcessingFactory, SMSOddEvenHarmonicRatio> reg = metadata; 00039 } 00040 00041 00042 bool SMSOddEvenHarmonicRatio::Do(const SpectralPeakArray& in, SpectralPeakArray& out) 00043 { 00044 out = in; // TODO big cludge for streaming refactoring 00045 DataArray& iMagArray=in.GetMagBuffer(); 00046 DataArray& oMagArray=out.GetMagBuffer(); 00047 TSize nPeaks=in.GetnPeaks(); 00048 TData oddFactor=mOddFactor.GetLastValue()*0.5; 00049 TData evenFactor=-oddFactor; 00050 00051 for(int i=0;i<nPeaks-1;i+=2) 00052 { 00053 oMagArray[i]=std::min(iMagArray[i]+oddFactor,TData(0)); 00054 oMagArray[i+1]=std::min(iMagArray[i+1]+evenFactor,TData(0)); 00055 } 00056 return true; 00057 } 00058 00059 } 00060