[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:              11-23-2007 04:18 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 - 11-23-07 04:18  
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So, to summarise, there are two workarounds to this problem:
1) Build using gcc-4.2 with DONT_OPTIMIZE in "make menuselect"
2) Build normally using gcc-4.1

I don't have knowledge of the the inner workings of the codec translators
to hazard a guess why they get broken by gcc-4.2 - do they make some
assumption as to the way the compiler behaves which has changed or is it
simply a bug/feature in gcc-4.2? Over to the Asterisk experts to solve, but
at least there are workarounds. 

Issue History 
Date Modified   Username       Field                    Change               
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11-23-07 04:18  whiskerp       Note Added: 0074222                          
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