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 "Normalize.h" 00020 00021 using std::ostringstream; 00022 using namespace Marsyas; 00023 00024 Normalize::Normalize(mrs_string name):MarSystem("Normalize",name) 00025 { 00026 } 00027 00028 Normalize::~Normalize() 00029 { 00030 } 00031 00032 MarSystem* 00033 Normalize::clone() const 00034 { 00035 return new Normalize(*this); 00036 } 00037 00038 void 00039 Normalize::myProcess(realvec& in, realvec& out) 00040 { 00041 mrs_real rms = 0.0; 00042 mrs_natural t,o; 00043 00044 for (t = 0; t < inSamples_; t++) 00045 { 00046 rms = 0.0; 00047 // calculate 2-norm 00048 for (o=0; o < inObservations_; o++) 00049 { 00050 rms += (in(o,t) * in(o,t)); 00051 } 00052 rms = sqrt(rms); 00053 // normalize 00054 for (o=0; o < inObservations_; o++) 00055 { 00056 out(o,t) = in(o,t) / rms; 00057 } 00058 } 00059 }