Marsyas
0.6.0-alpha
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00001 /* 00002 ** Copyright (C) 1998-2006 George Tzanetakis <gtzan@cs.uvic.ca> 00003 ** 00004 ** This program is free software; you can redistribute it and/or modify 00005 ** it under the terms of the GNU General Public License as published by 00006 ** the Free Software Foundation; either version 2 of the License, or 00007 ** (at your option) any later version. 00008 ** 00009 ** This program is distributed in the hope that it will be useful, 00010 ** but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 ** GNU General Public License for more details. 00013 ** 00014 ** You should have received a copy of the GNU General Public License 00015 ** along with this program; if not, write to the Free Software 00016 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00017 */ 00018 00019 #include "Whitening.h" 00020 00021 using std::ostringstream; 00022 using namespace Marsyas; 00023 00024 Whitening::Whitening(mrs_string name):MarSystem("Whitening", name) 00025 { 00026 } 00027 00028 Whitening::Whitening(const Whitening& a) : MarSystem(a) 00029 { 00030 } 00031 00032 Whitening::~Whitening() 00033 { 00034 } 00035 00036 MarSystem* 00037 Whitening::clone() const 00038 { 00039 return new Whitening(*this); 00040 } 00041 00042 void 00043 Whitening::addControls() 00044 { 00045 } 00046 00047 void 00048 Whitening::myUpdate(MarControlPtr sender) 00049 { 00050 MarSystem::myUpdate(sender); 00051 } 00052 00053 00054 void 00055 Whitening::myProcess(realvec& in, realvec& out) 00056 { 00057 mrs_natural o,t; 00058 mrs_natural inObservations = getctrl("mrs_natural/inObservations")->to<mrs_natural>(); 00059 mrs_real a; 00060 00061 for (t = 0; t < inSamples_; t++) 00062 { 00063 for (o=0; o < inObservations; o=o+2) 00064 { 00065 a = sqrt( (in(o,t)*in(o,t)) + (in(o+1,t)*in(o+1,t) )); 00066 if (a>0) { 00067 out(o,t) = in(o,t)/a; 00068 out(o+1,t) = in(o+1,t)/a; 00069 } 00070 else { 00071 out(o,t)=0; 00072 out(o+1,t)=0; 00073 } 00074 } 00075 } 00076 }