Marsyas  0.5.0-beta1
/Users/jleben/code/marsyas/src/marsyas/marsystems/MFCC.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_MFCC_H
00020 #define MARSYAS_MFCC_H
00021 
00022 #include <marsyas/system/MarSystem.h>
00023 
00024 
00025 namespace Marsyas
00026 {
00045 class MFCC: public MarSystem
00046 {
00047 private:
00048 
00050   void addControls();
00051 
00052   void myUpdate(MarControlPtr sender);
00053 
00054   mrs_real lowestFrequency_;
00055   mrs_natural linearFilters_;
00056   mrs_real linearSpacing_;
00057   mrs_natural logFilters_;
00058   mrs_real logSpacing_;
00059   mrs_natural totalFilters_;
00060 
00061   mrs_natural fftSize_, pfftSize_;
00062   mrs_natural samplingRate_, psamplingRate_;
00063 
00064 
00066   mrs_natural cepstralCoefs_;
00068   mrs_natural pcepstralCoefs_;
00070   static const int cepstralCoefs_default = 13;
00071 
00073   MarControlPtr ctrl_cepstralCoefs_;
00074 
00075   realvec freqs_;
00076   realvec lower_;
00077   realvec center_;
00078   realvec upper_;
00079   realvec triangle_heights_;
00080 
00081   realvec fftFreqs_;
00082   realvec mfccFilterWeights_;
00083   realvec mfccDCT_;
00084   realvec earMagnitude_;
00085   realvec fmagnitude_;
00086 
00087   // NEIL's filter weight speedup
00088   int* mfcc_offsets_;
00089 
00090   bool init_;
00091 
00092 public:
00093 
00094   MFCC(std::string name);
00095   MFCC(const MFCC& a);
00096   ~MFCC();
00097   MarSystem* clone() const;
00098 
00099   void myProcess(realvec& in, realvec& out);
00100 };
00101 
00102 }//namespace Marsyas
00103 
00104 #endif
00105 
00106 
00107