1 files changed, 61 insertions, 0 deletions
diff --git a/xtract/xtract_delta.h b/xtract/xtract_delta.h
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+++ b/xtract/xtract_delta.h
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+/* libxtract feature extraction library
+ *  
+ * Copyright (C) 2006 Jamie Bullock
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
+ * USA.
+ */
+
+/* xtract_delta.h: declares functions that extract a feature as a single value from more than one input vector */
+
+#ifndef XTRACT_DELTA
+#define XTRACT_DELTA
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "xtract_types.h"
+/* Flux/temporal variation */
+
+/* Gaël Richard (2006)*/
+int xtract_flux(float *data, int N, void *argv , float *result);
+/*xtract_frame_tracker *xf */
+
+/* Attack Time */
+
+int xtract_attack_time(float *data, int N, void *argv , float *result);
+/* xtract_amp_tracker *xa */
+
+/* Temporal decrease */
+
+int xtract_decay_time(float *data, int N, void *argv, float *result);
+/* xtract_amp_tracker *xa */
+
+
+/* Delta vector */
+/* Generic function to calculate the delta of a feature over a given period (in frames */
+
+int xtract_delta_feature(float *data, int N, void *argv, float *result);
+/*xtract_frame_tracker *xf */
+/*float frames*/
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif