Marsyas  0.6.0-alpha
/usr/src/RPM/BUILD/marsyas-0.6.0/src/marsyas/marsystems/LyonPassiveEar.h
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00001 /*
00002 ** Copyright (C) 1998-2010 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_LYONEAR_H
00020 #define MARSYAS_LYONEAR_H
00021 
00022 #include <marsyas/system/MarSystem.h>
00023 
00024 namespace Marsyas
00025 {
00026 class Series;
00027 class Filter;
00028 
00063 class LyonPassiveEar: public MarSystem
00064 {
00065 private:
00066   void addControls();
00067   void myUpdate(MarControlPtr sender);
00068 
00069   mrs_bool          setParametersIntern ();
00070   void              updateControlsIntern ();
00071   static mrs_realvec    lyonSecondOrderFilter (mrs_real midFreq, mrs_real q, mrs_real sRate);
00072   static mrs_real       lyonFreqResp (mrs_realvec firCoeffs, mrs_realvec iirCoeffs, mrs_real freq, mrs_real sRate, mrs_bool inDb = true);
00073   static mrs_real       lyonSetGain (mrs_realvec firCoeffs, mrs_realvec iirCoeffs, mrs_real newGain, mrs_real freq, mrs_real sRate);
00074   static Filter*        lyonCreateFilter (mrs_realvec firCoeffs, mrs_realvec iirCoeffs, mrs_string name);
00075 
00076   // control parameters
00077   mrs_real  fs_;                    
00078 
00079   mrs_natural decimFactor_;
00080   mrs_real  earQ_;
00081   mrs_real  stepFactor_;
00082   mrs_bool  channelDiffActive_;
00083   mrs_bool  agcActive_;
00084   mrs_real  decimTauFactor_;
00085 
00086   mrs_realvec centerFreqs_,
00087               tmpOut_,
00088               decimOut_;
00089 
00090   //internal variables and parameters
00091   mrs_natural currDecimState_;
00092   unsigned int numFilterChannels_;
00093 
00094 
00096   Series      *passiveEar_;
00097 
00098 public:
00099   LyonPassiveEar(std::string name);
00100   ~LyonPassiveEar();
00101 
00102   MarSystem* clone() const;
00103 
00104   void myProcess(realvec& in, realvec& out);
00105 };
00106 
00107 }//namespace Marsyas
00108 
00109 #endif   // MARSYAS_LYONEAR_H
00110