Marsyas  0.6.0-alpha
/usr/src/RPM/BUILD/marsyas-0.6.0/src/marsyas/marsystems/Pitch2Chroma.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_PITCH2CHROMA_H
00020 #define MARSYAS_PITCH2CHROMA_H
00021 
00022 #include <marsyas/system/MarSystem.h>
00023 
00024 namespace Marsyas
00025 {
00044 class Pitch2Chroma: public MarSystem
00045 {
00046 public:
00047   Pitch2Chroma(mrs_string inName);
00048   Pitch2Chroma(const Pitch2Chroma& inToCopy);
00049 
00050   ~Pitch2Chroma();
00051 
00052   MarSystem* clone() const;
00053 
00054   void addControls();
00055   void myUpdate(MarControlPtr inSender);
00056   void myProcess(realvec& inVec, realvec& outVec);
00057 
00058 private:
00059   // Pointer to MarControllers
00060   MarControlPtr ctrl_SampleRate_;
00061   MarControlPtr ctrl_LowestPitch_;
00062   MarControlPtr ctrl_NotesPerOctave_;
00063   MarControlPtr ctrl_NrOfNotes_;
00064   MarControlPtr ctrl_RefChromaIndex_;
00065 
00066   // Member variables
00067   mrs_real SampleRate_;                 // Sample rate of amplitude spectrum
00068   mrs_real LowestPitch_;                    // Lowest supported pitch
00069   mrs_natural NotesPerOctave_;          // Number of notes per octave
00070   mrs_natural NrOfNotes_;                   // Total number of notes
00071   mrs_natural RefChromaIndex_;          // Chroma index of LOWEST FREQUENCY
00072   // Possible values: 1.. NotesPerOctave
00073 
00074   mrs_realvec PitchToNoteTransform_;        // Dimension: NrOfNotes x NrOfFFTBins
00075   mrs_realvec StartAndEndIndex_;            // Start/end indexes of notes in input vector
00076 
00077   mrs_realvec NoteToChromaTransform_;       // Dimension: NrOfNotesPerOctave x NrOfNotes
00078 
00079   void UpdatePitchToNoteTransform();
00080   void UpdateNoteToChromaTransform();
00081 };
00082 
00083 }   // End namespace
00084 
00085 #endif