comparison trunk/src/Modules/Strobes/ModuleParabola.h @ 277:6b4921704eb1

- Ported over HTK file output
- Added some more meat to the Slaney IIR gammatone implementation
- Ported over the AIM-MAT sf2003 parabola strobe algorithm
- Finished making the SAI implementation compile
- Ported over the strobe list class (now uses STL deques internally)

+// Copyright 2007-2010, Thomas Walters
+//
+// AIM-C: A C++ implementation of the Auditory Image Model
+// http://www.acousticscale.org/AIMC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+/*!
+ * \file
+ * \brief SAI 2003 module - for any output frame rate
+ *
+ * \author Tom Walters <[e-mail]>
+ * \date created 2007/03/28
+ * \version \$Id$
+ */
+
+#ifndef _AIMC_MODULE_STROBES_PARABOLA_H_
+#define _AIMC_MODULE_STROBES_PARABOLA_H_
+
+#include <vector>
+
+#include "Support/Module.h"
+#include "Support/Parameters.h"
+#include "Support/SignalBank.h"
+
+/*!
+ * \class ModuleParabola "Modules/SAI/ModuleParabola.h"
+ * \brief SF 2003
+ */
+namespace aimc {
+using std::vector;
+class ModuleParabola : public Module {
+ public:
+	ModuleParabola(Parameters *params);
+	virtual ~ModuleParabola();
+	void Process(const SignalBank& input);
+private:
+  /*! \brief Prepare the module
+	 *  \param input Input signal bank
+	 *  \param output true on success false on failure
+	 */
+	virtual bool InitializeInternal(const SignalBank& input);
+
+	virtual void ResetInternal();
+
+
+	//! \brief Number of samples over which the strobe should be decayed to zero
+	int strobe_decay_samples_;
+
+	/*! \brief Current strobe thresholds, one for each bank channel.
+	 *
+	 *  This value is decayed over time.
+	 */
+	vector<float> threshold_;
+
+	/*! \brief Signal value at the last strobe, one for each bank channel.
+	 *
+	 *  This value is not decayed over time.
+	 */
+	vector<float> last_threshold_;
+
+  //! \brief Parabola height parameter
+  float height_;
+
+  //! \brief Parabola width paramters
+  float parabw_;
+
+  //! \brief Parabola a value
+  vector<float> parab_a_;
+
+  //! \brief Parabola b value
+  vector<float> parab_b_;
+
+  //! \brief Parabola calculation variable
+  vector<float> parab_wnull_;
+
+  //! \brief Parabola calculation variable
+  vector<int> parab_var_samples_;
+
+  //! \brief Storage for the number of samples since the last strobe
+  vector<int> samples_since_last_strobe_;
+
+  vector<float> prev_sample_;
+  vector<float> curr_sample_;
+  vector<float> next_sample_;
+
+  float alpha_;
+  int channel_count_;
+  float sample_rate_;
+  float strobe_decay_time_;
+  int max_strobes_;
+};
+}  // namespace aimc
+
+#endif  // _AIM_MODULE_STROBES_PARABOLA_H_