I have used virtually all versions of Asterisk 1.0+ (literally, either
in production or testing) with OpenSUSE 10+ and 11 on AMD and Intel
and haven't had any issues with gcc optimizations with regards to
audio sounding choppy. This scenario for me has always been the gsm
libs.
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On Aug 6, 2008, at 9:16 AM, Mark Michelson wrote:
Guilherme Loch Waltrick Góes wrote:
I have a server with Asterisk 1.4.21.1 <http://1.4.21.1> and some
prompts recorded in GSM format. I have these same prompts in another
server with Asterisk 1.4.18, on this server the prompts sound pretty
nice, but on the first one they sound pretty choppy. Was there any
changes on the transcoding code between this 2 versions ? Any hints ?
Best Regards,
--
Guilherme Loch Góes
Visite nossa loja virtual: http://www.shopvoip.com.br
Notícias e Fórum sobre VoIP com software livre:
http://www.asteriskexperts.com.br
One important difference between the servers may be the compiler
used. We have
heard reports that using GCC 4.2 or later with optimizations on
causes choppy
audio when using GSM.
Solutions to this include either downgrading your compiler to GCC
4.1 or
earlier, or selecting DONT_OPTIMIZE in menuselect under compiler
options and
then recompiling Asterisk. I also believe that you can set the
optimization
level for compilation to -O2 in Makefile.rules and have no choppy
audio, but I
cannot confirm this.
Of course, if this server isn't running GCC 4.2, then you can ignore
everything
I've said so far :)
Mark Michelson
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