Marsyas  0.6.0-alpha
/usr/src/RPM/BUILD/marsyas-0.6.0/src/marsyas/marsystems/PeakDistanceHorizontality.h
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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