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+/*--------------------------------------------------------------------------*\
+
+	FILE........: sd.h
+	AUTHOR......: David Rowe
+	DATE CREATED: 22/7/93
+
+	Function to determine spectral distortion between two sets of LPCs.
+
+\*--------------------------------------------------------------------------*/
+
+/*
+  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 __SD__
+#define __SD__
+
+#include "codec2_fft.h"
+
+float spectral_dist(float ak1[], float ak2[], int p, codec2_fft_cfg fft_fwd_cfg, int n);
+
+#endif	/* __SD__  */