[asterisk-bugs] [Asterisk 0011243]: Distortion in Playback of .gsm files over non-GSM channel

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=11243 
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Reported By:                whiskerp
Assigned To:                
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Project:                    Asterisk
Issue ID:                   11243
Category:                   Codecs/codec_gsm
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.13  
SVN Branch (only for SVN checkouts, not tarball releases):  1.4  
SVN Revision (number only!): 89241 
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             11-14-2007 06:35 CST
Last Modified:              11-22-2007 07:06 CST
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Summary:                    Distortion in Playback of .gsm files over non-GSM
channel
Description: 
On one of my Asterisk boxes, I am getting distortion on playback of .gsm
sound files. Distortion is heard when transcoding is used to a non-GSM
channel. Connecting over a GSM channel is fine.

The other Asterisk server running the same Asterisk SVN version is OK, so
it may be related to dual-processor or OS version.
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---------------------------------------------------------------------- 
 whiskerp - 11-22-07 07:06  
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Making a little progress!

I rebuilt asterisk with DONT_OPTIMIZE selected in the Compiler Flags
section of menuselect. All is now well with GSM, so it is something in the
newer compilers optimising that is causing the trouble. I did update Debian
this morning and a normal build still has a distorted GSM with the latest
gcc 4.2.3 compiler.


gcc -v returns:

Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v
--enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr
--enable-shared --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --enable-nls
--with-gxx-include-dir=/usr/include/c++/4.2 --program-suffix=-4.2
--enable-clocale=gnu --enable-libstdcxx-debug --enable-mpfr
--enable-targets=all --enable-checking=release --build=i486-linux-gnu
--host=i486-linux-gnu --target=i486-linux-gnu
Thread model: posix
gcc version 4.2.3 20071014 (prerelease) (Debian 4.2.2-3)


The Ubuntu box where I have no problems is running gcc 4.1.2. I'll try
rebuilding with an older compiler.

Peter 

Issue History 
Date Modified   Username       Field                    Change               
====================================================================== 
11-22-07 07:06  whiskerp       Note Added: 0074184                          
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