From 80291602cf05440541e91bb913be0b02eb1e8d30 Mon Sep 17 00:00:00 2001
From: Sandesh Venkatesh <sandesh.venkatesh@ittiam.com>
Date: Thu, 10 Jul 2025 12:12:53 +0530
Subject: [PATCH] Fix for 3GPP issue 1812: LTV assertion: Issue #1348
 regression in +10dB decoder test

Link #1812
Increased guard bits for stereo dft to avoid overflow
---
 lib_dec/ivas_cpe_dec_fx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib_dec/ivas_cpe_dec_fx.c b/lib_dec/ivas_cpe_dec_fx.c
index d4c041e97..6e29c2ac9 100644
--- a/lib_dec/ivas_cpe_dec_fx.c
+++ b/lib_dec/ivas_cpe_dec_fx.c
@@ -652,7 +652,7 @@ ivas_error ivas_cpe_dec_fx(
 
         IF( NE_16( shift, 31 ) )
         {
-            shift = sub( add( hCPE->hStereoDft->q_dft, shift ), Q15 ); /* Q15 for guard bits */
+            shift = sub( add( hCPE->hStereoDft->q_dft, shift ), Q16 ); /* Q16 for guard bits */
 
             IF( GT_16( shift, hCPE->hStereoDft->q_dft ) )
             {
-- 
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