diff intercom/ilbc/LPCdecode.h @ 2:13be24d74cd2

import intercom-0.4.1
author Peter Meerwald <pmeerw@cosy.sbg.ac.at>
date Fri, 25 Jun 2010 09:57:52 +0200
parents
children
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/intercom/ilbc/LPCdecode.h	Fri Jun 25 09:57:52 2010 +0200
@@ -0,0 +1,37 @@
+
+   /******************************************************************
+
+       iLBC Speech Coder ANSI-C Source Code
+
+       LPC_decode.h
+
+       Copyright (C) The Internet Society (2004).
+       All Rights Reserved.
+
+   ******************************************************************/
+
+#ifndef __iLBC_LPC_DECODE_H
+#define __iLBC_LPC_DECODE_H
+
+void LSFinterpolate2a_dec(float *a,     /* (o) lpc coefficients for a sub-frame */
+  float *lsf1,                  /* (i) first lsf coefficient vector */
+  float *lsf2,                  /* (i) second lsf coefficient vector */
+  float coef,                   /* (i) interpolation weight */
+  int length                    /* (i) length of lsf vectors */
+  );
+
+void SimplelsfDEQ(float *lsfdeq,        /* (o) dequantized lsf coefficients */
+  int *index,                   /* (i) quantization index */
+  int lpc_n                     /* (i) number of LPCs */
+  );
+
+void DecoderInterpolateLSF(float *syntdenum,    /* (o) synthesis filter coefficients */
+  float *weightdenum,           /* (o) weighting denumerator
+                                   coefficients */
+  float *lsfdeq,                /* (i) dequantized lsf coefficients */
+  int length,                   /* (i) length of lsf coefficient vector */
+  iLBC_Dec_Inst_t * iLBCdec_inst
+  /* (i) the decoder state structure */
+  );
+
+#endif

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