Martin,
Please follow the "Steps to Reproduce" in my bug report and post your
results back to the list. If you're comfortable with adding the
ast_log() statements to the ast_read() and ast_write() functions located
in channel.c, it would really help to show that we are experiencing the
same problem. MONITOR_CONSTANT_DELAY is usually not defined, so be
careful to add the ast_log() statements to the appropriate code block.
Specifically, the code block between the "#ifndef
MONITOR_CONSTANT_DELAY" and "#else" preprocessor directives in
ast_read() and ast_write().
If you feel uncomfortable mixing down to a GSM format WAV file, use the
following options to soxmix instead:
#soxmix -v 1.0 -t ul LEG-IN.PCM -t ul LEG-OUT.PCM MIXED.WAV
This will create a standard WAV file from the PCM legs. I believe this
does very little other than mixing the legs together and adding a header
to the mixed file. The mixed file should be a few dozen bytes (the size
of the header) larger than one of the leg files. There should be no
compression and no compression artifacts, but you'll have a file that
you can listen to.
Alternately, you can mix the individual legs to standard WAV files with sox:
#sox -v 1.0 -t ul LEG-IN.PCM LEG-IN.WAV
#sox -v 1.0 -t ul LEG-OUT.PCM LEG-OUT.WAV
Thanks alot for your response. Determining if this is a problem that is
isolated to certain hardware/software configurations or if it is a
general problem with Asterisk is a huge step towards resolving it.
Sincerely,
Matthew Roth
InterMedia Marketing Solutions
Software Engineer and Systems Developer
Martin Joseph wrote:
List users,
Huh, I have noticed this type of popping on an SIP to SIP connection
using ulaw also, but I figured it was just me. I am running * 1.21.
I am kind of a newbie to asterisk, so how should I go about
documenting this in your opinion.
I don't think mixing down with sox is acceptable as that introduces
another potential source of noise?
I'd love to help fix this, or pin it down, but would need some more
direction to do so...
Marty
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