CLAM-Development  1.4.0
SpectralCombDelta.cxx
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1 /*
2  * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
3  * UNIVERSITAT POMPEU FABRA
4  *
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  */
21 
22 #include "SpectralCombDelta.hxx"
23 #include "ProcessingFactory.hxx"
24 
25 namespace CLAM
26 {
27 
28 namespace Hidden
29 {
30  static const char * metadata[] = {
31  "key", "SpectralCombDelta",
32  // "category", "Spectral Transformations",
33  // "description", "SpectralCombDelta",
34  0
35  };
36  static FactoryRegistrator<ProcessingFactory, SpectralCombDelta> reg = metadata;
37 }
38 
40 {
41  if (!mConfig.GetPreserveOuts())
42  {
43  out = in; //TODO big cludge for streaming
44  }
45  DataArray& inMag = in.GetMagBuffer();
46  DataArray& outMag = out.GetMagBuffer();
47 
48  int spectrumSize = in.GetSize();
49  mMag.Resize(spectrumSize);
50  mMag.SetSize(spectrumSize);
51 
52  TData spectralResolution = spectrumSize/in.GetSpectralRange();
53  int fundamental = Round(mFundamentalCtl.GetLastValue()* spectralResolution);
54  TData overallFactor = log2lin(mLogOverallFactor.GetLastValue());
55  int i;
56  int n;
57  //first we set everything to 0 (it could be done more efficiently)
58  for(i = 0; i<spectrumSize; i++)
59  {
60  mMag[i] = 0.;
61  }
62  n = 1;
63  for(i = 0; i<spectrumSize; i++)
64  {
65  if(i == int (TData(fundamental) * n))
66  {
67  mMag[i] = inMag[i]*overallFactor;
68  n++;
69  }
70  }
71  out.SetMagBuffer(mMag);
72  return true;
73 }
74 
75 /*bool SpectralCombDelta::Do(const Spectrum& in, Spectrum& out)
76 {
77  if (!mConfig.GetPreserveOuts())
78  {
79  out = in; //TODO big cludge for streaming
80  }
81  DataArray& inMag = in.GetMagBuffer();
82  DataArray& outMag = out.GetMagBuffer();
83 
84  int spectrumSize = in.GetSize();
85  mMag.Resize(spectrumSize);
86  mMag.SetSize(spectrumSize);
87 
88  TData spectralResolution = spectrumSize/in.GetSpectralRange();
89  TData freqFactor = mFreqSpaceFactorCtl.GetLastValue();
90  int fundamental = Round(mFundamentalCtl.GetLastValue()* spectralResolution);
91  TData overallFactor = log2lin(mLogOverallFactor.GetLastValue());
92  int i;
93  TData n;
94  //first we set everything to 0 (it could be done more efficiently)
95  for(i = 0; i<spectrumSize; i++)
96  {
97  mMag[i] = 0.;
98  }
99  n = 1.;
100  for(i = 0; i<spectrumSize; i++)
101  {
102  if(i == int (TData(fundamental) * n))
103  {
104  mMag[i] = inMag[i]*overallFactor;
105  n*=freqFactor;
106  }
107  }
108  out.SetMagBuffer(mMag);
109  return true;
110 }
111 */
112 
113 
114 }
115