tomwalters@276: // Copyright 2009-2010, Thomas Walters
tomwalters@276: //
tomwalters@276: // AIM-C: A C++ implementation of the Auditory Image Model
tomwalters@276: // http://www.acousticscale.org/AIMC
tomwalters@276: //
tomwalters@276: // This program is free software: you can redistribute it and/or modify
tomwalters@276: // it under the terms of the GNU General Public License as published by
tomwalters@276: // the Free Software Foundation, either version 3 of the License, or
tomwalters@276: // (at your option) any later version.
tomwalters@276: //
tomwalters@276: // This program is distributed in the hope that it will be useful,
tomwalters@276: // but WITHOUT ANY WARRANTY; without even the implied warranty of
tomwalters@276: // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
tomwalters@276: // GNU General Public License for more details.
tomwalters@276: //
tomwalters@276: // You should have received a copy of the GNU General Public License
tomwalters@276: // along with this program.  If not, see <http://www.gnu.org/licenses/>.
tomwalters@276: 
tomwalters@276: /*! \file
tomwalters@276:  *  \brief Slaney's gammatone filterbank
tomwalters@276:  *
tomwalters@276:  *  \author Thomas Walters <tom@acousticscale.org>
tomwalters@276:  *  \date created 2009/11/13
tomwalters@276:  *  \version \$Id$
tomwalters@276:  */
tomwalters@276: 
tomwalters@276: #include <vector>
tomwalters@276: 
tomwalters@277: #include "Support/Module.h"
tomwalters@277: #include "Support/Parameters.h"
tomwalters@277: #include "Support/SignalBank.h"
tomwalters@277: 
tomwalters@276: namespace aimc {
tomwalters@276: using std::vector;
tomwalters@276: class ModuleGammatone : public Module {
tomwalters@276:  public:
tomwalters@276:   ModuleGammatone(Parameters *params);
tomwalters@276:   virtual ~ModuleGammatone();
tomwalters@276:   //! \brief Process a buffer
tomwalters@276:   virtual void Process(const SignalBank &input);
tomwalters@276: 
tomwalters@276:  private:
tomwalters@276:   virtual bool InitializeInternal(const SignalBank& input);
tomwalters@276:   virtual void ResetInternal();
tomwalters@276:   vector<vector<float> > forward_;
tomwalters@277:   vector<vector<float> > back_;
tomwalters@277:   vector<vector<float> > state_;
tomwalters@276:   vector<float> centre_frequencies_;
tomwalters@276:   int num_channels_;
tomwalters@276:   float max_frequency_;
tomwalters@276:   float min_frequency_;
tomwalters@276: };
tomwalters@276: }  // namespace aimc