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 #ifndef MARSYAS_PeakDistanceHorizontality_H 00020 #define MARSYAS_PeakDistanceHorizontality_H 00021 00022 #include <marsyas/system/MarSystem.h> 00023 00024 namespace Marsyas 00025 { 00039 class marsyas_EXPORT PeakDistanceHorizontality: public MarSystem 00040 { 00041 private: 00042 00044 void addControls(); 00045 00047 void myUpdate(MarControlPtr sender); 00048 00049 mrs_real ComputeHorizontality(mrs_real diffX, mrs_real diffY); 00050 //mrs_real ComputeHorizontality(mrs_real freq1, mrs_real freq2); 00051 00052 inline mrs_real sigmoid (mrs_real val) 00053 { 00054 return (1. / (1. + exp(sigSteepness_ * (val - sigCutOff_)))); 00055 } 00056 00057 inline mrs_real gaussian (mrs_real x) 00058 { 00059 return exp (-(x*x)/(2*(sigCutOff_*sigCutOff_)));// / sqrt (TWOPI*std); 00060 } 00061 00063 MarControlPtr ctrl_horizvert_, 00064 ctrl_rangeX_, 00065 ctrl_rangeY_; 00066 00067 mrs_realvec weights_; 00068 mrs_real sigSteepness_, 00069 sigCutOff_; 00070 00071 public: 00073 PeakDistanceHorizontality(std::string name); 00074 00076 PeakDistanceHorizontality(const PeakDistanceHorizontality& a); 00077 00079 ~PeakDistanceHorizontality(); 00080 00082 MarSystem* clone() const; 00083 00085 void myProcess(realvec& in, realvec& out); 00086 }; 00087 00088 } 00089 //namespace Marsyas 00090 00091 #endif 00092 //MARSYAS_PeakDistanceHorizontality_H 00093