CLAM-Development  1.4.0
SegmentSMSHarmonizer.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 "SegmentSMSHarmonizer.hxx"
23 #include "ProcessingFactory.hxx"
24 
25 namespace CLAM
26 {
27 
28 namespace Hidden
29 {
30  static const char * metadata[] = {
31  "key", "SegmentSMSHarmonizer",
32 // "category", "SMS Transformations",
33  "description", "SegmentSMSHarmonizer",
34  0
35  };
36  static FactoryRegistrator<ProcessingFactory, SegmentSMSHarmonizer> reg = metadata;
37 }
38 
39 bool SegmentSMSHarmonizer::Do(const Frame& in, Frame& out)
40 {
41  BPF& voices=mConfig.GetBPF();
42  TSize nVoices=voices.Size();
43 
44  for(int i=0;i<nVoices;i++)
45  {
46  TData amount=voices.GetValueFromIndex(i);
47  TData gain=voices.GetXValue(i);
48  SendFloatToInControl(mPitchShift,"PitchSteps",amount);
49  mPitchShift.Do(in,mTmpFrame);
50  Gain(mTmpFrame,gain);
51  AddFrame(mTmpFrame,out,out);
52  }
53 
54  //We set fundamental value of input to zero as it is inharmonic
55  out.SetFundamental(mTmpFund);
56  return true;
57 }
58 
59 void SegmentSMSHarmonizer::AddFrame(const Frame& in1, const Frame& in2, Frame& out)
60 {
61  if(mIgnoreResidualCtl.GetLastValue()<0.01) // is 0
62  {
63  mSpectrumAdder.Start();
64  mSpectrumAdder.Do(in1.GetResidualSpec(),in2.GetResidualSpec(),out.GetResidualSpec());
65  mSpectrumAdder.Stop();
66  }
67  out.SetSpectralPeakArray(in1.GetSpectralPeakArray()+in2.GetSpectralPeakArray());
68 }
69 
70 void SegmentSMSHarmonizer::Gain(Frame& inputFrame, TData gain)
71 {
72  SpectralPeakArray& peaks=inputFrame.GetSpectralPeakArray();
73  Spectrum& residual=inputFrame.GetResidualSpec();
74  DataArray& peakMag=peaks.GetMagBuffer();
75  int nPeaks=peaks.GetnPeaks();
76  int specSize=residual.GetSize();
77 //TODO check whether spectrum is in dB or not
78  TData linGain=Lin(gain);
79 
80  for(int i=0;i<nPeaks;i++)
81  {
82  peakMag[i]=std::min(peakMag[i]+gain,TData(0));
83  }
84  if(mIgnoreResidualCtl.GetLastValue()<0.01) // is 0
85  {
86  DataArray& resMag = residual.GetMagBuffer();
87  for(int i=0;i<specSize;i++)
88  {
89  resMag[i] = resMag[i]*linGain;
90  }
91  }
92 }
93 
94 
95 }
96