From 6f9f77e0ca21e577fd467e7a6fafc57c9e6a732b Mon Sep 17 00:00:00 2001
From: Steve Murphy <murf@digium.com>
Date: Wed, 22 Aug 2007 14:12:24 +0000
Subject: [PATCH] Merged revisions 80166 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4
........
r80166 | murf | 2007-08-21 10:36:34 -0600 (Tue, 21 Aug 2007) | 1 line
This patch solves problem 1 in 8126; it should not slow down the alaw codec, but should prevent signal degradation via multiple trips thru the codec. Fossil estimates the twice thru this codec will prevent fax from working. 4-6 times thru would result hearable, noticeable, voice degradation.
........
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@80241 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
main/alaw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/main/alaw.c b/main/alaw.c
index fbc99b0fe9..8baa6a7a35 100644
--- a/main/alaw.c
+++ b/main/alaw.c
@@ -112,7 +112,7 @@ static inline short int alaw2linear (unsigned char alaw)
int seg;
alaw ^= AMI_MASK;
- i = ((alaw & 0x0F) << 4);
+ i = ((alaw & 0x0F) << 4) + 8 /* rounding error */;
seg = (((int) alaw & 0x70) >> 4);
if (seg)
i = (i + 0x100) << (seg - 1);
--
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