1 files changed, 39 insertions, 0 deletions
diff --git a/gr-vocoder/lib/codec2/nlp.h b/gr-vocoder/lib/codec2/nlp.h
new file mode 100644
index 000000000..88a3733dc
--- /dev/null
+++ b/gr-vocoder/lib/codec2/nlp.h
@@ -0,0 +1,39 @@
+/*---------------------------------------------------------------------------*\
+                                                 
+  FILE........: nlp.c                                                   
+  AUTHOR......: David Rowe                                      
+  DATE CREATED: 23/3/93                                    
+                                                         
+  Non Linear Pitch (NLP) estimation functions.			  
+                                                               
+\*---------------------------------------------------------------------------*/
+
+/*
+  Copyright (C) 2009 David Rowe
+
+  All rights reserved.
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License version 2.1, as
+  published by the Free Software Foundation.  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 Lesser General Public License
+  along with this program; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __NLP__
+#define __NLP__
+
+#include "comp.h"
+
+void *nlp_create();
+void nlp_destroy(void *nlp_state);
+float nlp(void *nlp_state, float Sn[], int n, int m, int pmin, int pmax, 
+	  float *pitch, COMP Sw[], float *prev_Wo);
+float test_candidate_mbe(COMP Sw[], float f0, COMP Sw_[]);
+
+#endif