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-rw-r--r--codecs/ilbc/syntFilter.c108
1 files changed, 0 insertions, 108 deletions
diff --git a/codecs/ilbc/syntFilter.c b/codecs/ilbc/syntFilter.c
deleted file mode 100644
index bb7f7a559..000000000
--- a/codecs/ilbc/syntFilter.c
+++ /dev/null
@@ -1,108 +0,0 @@
-
-/******************************************************************
-
- iLBC Speech Coder ANSI-C Source Code
-
- syntFilter.c
-
- Copyright (C) The Internet Society (2004).
- All Rights Reserved.
-
-******************************************************************/
-
-#include "iLBC_define.h"
-#include "syntFilter.h"
-
-/*----------------------------------------------------------------*
- * LP synthesis filter.
- *---------------------------------------------------------------*/
-
-void syntFilter(
- float *Out, /* (i/o) Signal to be filtered */
- float *a, /* (i) LP parameters */
- int len, /* (i) Length of signal */
- float *mem /* (i/o) Filter state */
-){
- int i, j;
- float *po, *pi, *pa, *pm;
-
- po=Out;
-
- /* Filter first part using memory from past */
-
- for (i=0; i<LPC_FILTERORDER; i++) {
- pi=&Out[i-1];
- pa=&a[1];
- pm=&mem[LPC_FILTERORDER-1];
- for (j=1; j<=i; j++) {
- *po-=(*pa++)*(*pi--);
- }
- for (j=i+1; j<LPC_FILTERORDER+1; j++) {
- *po-=(*pa++)*(*pm--);
- }
- po++;
- }
-
- /* Filter last part where the state is entierly in
- the output vector */
-
- for (i=LPC_FILTERORDER; i<len; i++) {
-
-
- pi=&Out[i-1];
- pa=&a[1];
- for (j=1; j<LPC_FILTERORDER+1; j++) {
- *po-=(*pa++)*(*pi--);
- }
- po++;
- }
-
- /* Update state vector */
-
- memcpy(mem, &Out[len-LPC_FILTERORDER],
- LPC_FILTERORDER*sizeof(float));
-}
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