[asterisk-bugs] [Asterisk 0009631]: improve jitterbuffer (jbtargetextra/minjitterbuffer)

[noreply at bugs.digium.com]

The following issue has been RESOLVED. 
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http://bugs.digium.com/view.php?id=9631 
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Reported By:                pj
Assigned To:                file
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Project:                    Asterisk
Issue ID:                   9631
Category:                   Channels/chan_iax2
Reproducibility:            always
Severity:                   tweak
Priority:                   normal
Status:                     resolved
Asterisk Version:            SVN 
SVN Branch (only for SVN checkouts, not tarball releases):  trunk 
SVN Revision (number only!): 61800 
Disclaimer on File?:        No 
Request Review:              
Resolution:                 suspended
Fixed in Version:           
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Date Submitted:             04-29-2007 06:32 CDT
Last Modified:              12-17-2007 11:50 CST
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Summary:                    improve jitterbuffer (jbtargetextra/minjitterbuffer)
Description: 
I discovered, that jittertargetextra option works maybe not good as it
can,
eg. if I have jitter spike (rtt 5ms to 100ms) and jittertargetextra set to
150ms, so that total jb size (155ms) can compensate this (95ms) jitter
change,
but nagative aspect of how jittertargetextra is now implemented is, that
it _immediatelly_ extend jitterbuffer from 155ms to 250ms!
so it have all negative consequenses to voice quality as "primary" jitter
spike.
this can be improved by growing jitterbuffer size _gently_ and not make jb
size jumps.
I think also, that it will be really usefull to add similar concept like
maxjitterbuffer, to be able to specify also _minimum_ jb size, that jb size
shouldn't never drop below lower limit, regardless of actual measured
jitter.
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 file - 12-17-07 11:50  
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It's been quite some time since any further discussion has happened on this
and no patch has been supplied. I would suggest bringing it up on the -dev
list so both Steves can discuss. 

Issue History 
Date Modified   Username       Field                    Change               
====================================================================== 
12-17-07 11:50  file           Status                   feedback => resolved
12-17-07 11:50  file           Resolution               open => suspended   
12-17-07 11:50  file           Assigned To               => file            
12-17-07 11:50  file           Note Added: 0075578                          
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