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 "SpectralShapeShift.hxx" 00023 #include "ProcessingFactory.hxx" 00024 00025 namespace CLAM 00026 { 00027 namespace Hidden 00028 { 00029 static const char * metadata[] = { 00030 "key", "SpectralShapeShift", 00031 // "category", "Spectral Transformations", 00032 // "description", "SpectralShapeShift", 00033 0 00034 }; 00035 static FactoryRegistrator<ProcessingFactory, SpectralShapeShift> reg = metadata; 00036 } 00037 00038 bool SpectralShapeShift::Do(const Spectrum& 00039 inSpec,Spectrum& outSpec) 00040 { 00041 00042 if (!mConfig.GetPreserveOuts()) 00043 { 00044 outSpec = inSpec; //TODO big cludge for streaming 00045 } 00046 00047 mLogSpectrum = inSpec; 00048 mLogSpectrum.ToDB(); 00049 00050 mSpectralEnvelope.SetSpectralRange(mSpectralRange); 00051 00052 mSpectralPeakDetect.Do(mLogSpectrum, mSpectralPeaks); 00053 mSpectralEnvelopeExtract.Do(mSpectralPeaks,mSpectralEnvelope); 00054 00055 TData amount = mSteps.GetLastValue(); 00056 00057 //Shift spectral shape 00058 BPF& magBPF=mSpectralEnvelope.GetMagBPF(); 00059 int nPoints=magBPF.Size(); 00060 if(nPoints>2) 00061 { 00062 magBPF.SetIntpType(EInterpolation::eLinear); 00063 for(int i=0;i<nPoints;i++) 00064 { 00065 magBPF.SetXValue(i, magBPF.GetXValue(i)+amount); 00066 } 00067 //magBPF.UpdateSplineTable(); 00068 //Apply new spectral shape 00069 outSpec.ToDB(); 00070 mSpectralEnvelopeApply.Do(mLogSpectrum,mSpectralEnvelope,outSpec); 00071 outSpec.ToLinear(); 00072 } 00073 return true; 00074 } 00075 00076 00077 } 00078