Index: speex/libspeex/lpc.h |
=================================================================== |
--- speex/libspeex/lpc.h (revision 0) |
+++ speex/libspeex/lpc.h (revision 0) |
@@ -0,0 +1,53 @@ |
+/* Copyright (C) 2002 Jean-Marc Valin */ |
+/** |
+ @file lpc.h |
+ @brief Functions for LPC (Linear Prediction Coefficients) analysis |
+*/ |
+/* |
+ Redistribution and use in source and binary forms, with or without |
+ modification, are permitted provided that the following conditions |
+ are met: |
+ |
+ - Redistributions of source code must retain the above copyright |
+ notice, this list of conditions and the following disclaimer. |
+ |
+ - Redistributions in binary form must reproduce the above copyright |
+ notice, this list of conditions and the following disclaimer in the |
+ documentation and/or other materials provided with the distribution. |
+ |
+ - Neither the name of the Xiph.org Foundation nor the names of its |
+ contributors may be used to endorse or promote products derived from |
+ this software without specific prior written permission. |
+ |
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
+ CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+*/ |
+ |
+#ifndef LPC_H |
+#define LPC_H |
+ |
+#include "arch.h" |
+ |
+void _spx_autocorr( |
+ const spx_word16_t * x, /* in: [0...n-1] samples x */ |
+ spx_word16_t *ac, /* out: [0...lag-1] ac values */ |
+ int lag, int n); |
+ |
+spx_word32_t /* returns minimum mean square error */ |
+_spx_lpc( |
+ spx_coef_t * lpc, /* [0...p-1] LPC coefficients */ |
+ const spx_word16_t * ac, /* in: [0...p] autocorrelation values */ |
+ int p |
+ ); |
+ |
+ |
+#endif |
Property changes on: speex/libspeex/lpc.h |
___________________________________________________________________ |
Name: svn:executable |
+ * |