[Freeswitch-users] Audio delays and jitter

[Danny Gershman]

This is bare metal running CentOS 6.4.

Linux 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013 x86_64
x86_64 x86_64 GNU/Linux

Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                16
On-line CPU(s) list:   0-15
Thread(s) per core:    2
Core(s) per socket:    4
Socket(s):             2
NUMA node(s):          2
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 26
Stepping:              5
CPU MHz:               2261.023
BogoMIPS:              4521.29
Virtualization:        VT-x
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              8192K
NUMA node0 CPU(s):     0,2,4,6,8,10,12,14
NUMA node1 CPU(s):     1,3,5,7,9,11,13,15

On Wed, Sep 30, 2015 at 6:00 PM Ken Rice <krice at freeswitch.org> wrote:

> You should really be testing the latest… not to mention there are multiple
> bugs resolved since 1.4.19
>
>
>
> *From:* freeswitch-users-bounces at lists.freeswitch.org [mailto:
> freeswitch-users-bounces at lists.freeswitch.org] *On Behalf Of *Danny
> Gershman
> *Sent:* Wednesday, September 30, 2015 4:54 PM
> *To:* FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
> *Subject:* Re: [Freeswitch-users] Audio delays and jitter
>
>
>
> Currently tested with 1.4.19
>
>
>
> On Wed, Sep 30, 2015 at 5:23 PM Brian West <brian at freeswitch.org> wrote:
>
> Which revision of FreeSWITCH have you tested with?
>
>
>
> On Wed, Sep 30, 2015 at 4:15 PM, Danny Gershman <danny.gershman at gmail.com>
> wrote:
>
> We are using the OPUS codec with Chrome and WebRTC to make SIP calls into
> FS conferences.  We have packet captures at the edge of network that sound
> clear, but when they get to FreeSWITCH they sound distorted via delays and
> clipping.
>
>
>
> I've tried several combinations of jitterbuffer settings,
> disabled/enabling RTP timers, conference.  I have a mechanism I use in
> which I replay the RTP packets using SIPP and try them out.  Is there a way
> to dynamically adjust the jitterbuffer so that the right size is being
> used?  Right now I have it set at 180:540:540.  Maybe there is some other
> setting I could try that would help?
>
>
>
> Perhaps there's a way to force OPUS to use less bandwidth at the expense
> of quality?
>
>
>
> I'm willing to share the PCAPs some examples.
>
>
>
> Thanks in advance.
>
>
>
> --Danny Gershman
>
>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://confluence.freeswitch.org
> http://www.cluecon.com
>
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>
>
>
>
>
> --
>
> *Brian West*
> brian at freeswitch.org
>
> *Twitter: @FreeSWITCH , @briankwest*
> http://www.freeswitchbook.com
> http://www.freeswitchcookbook.com
>
> Got Bugs? Report them here <https://freeswitch.org/jira>! | Reddit:
> /r/freeswitch <https://www.reddit.com/r/freeswitch>
>
> *T:*+19184209001 | *F:*+19184209002 | *M:*+1918424WEST (9378)
> *iNUM:*+883 5100 1420 9001 | *ISN:*410*543 | *Skype:*briankwest
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://confluence.freeswitch.org
> http://www.cluecon.com
>
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://confluence.freeswitch.org
> http://www.cluecon.com
>
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20150930/3e82ed95/attachment.html