[jitsi-users] Recommendations to improve voice quality?


#1

Hello Everyone,

I've noticed that some of the voice conversations I have are horrible
with lots of breaking up. In those cases, it becomes so bad where one
side usually can't actually make out what the other side is saying.

I'm assuming this has something to do with packet loss and jitter. I'm
wondering if there are any recommendations on how to improve voice
quality? Increasing the bitrate isn't helping (currently using
Opus/48000) so are there any other settings I should try?

Thanks!
Anthony

···

--
Anthony Papillion
Phone: 1.918.533.9699
SIP: sip:cajuntechie@iptel.org
iNum: +883510008360912
XMPP: cypherpunk@patts.us

www.cajuntechie.org


#2

What is Jitsi connecting to? Is it local? If it is on the Internet, is there good connectivity between you? Do you have any traffic shaping?

I have found the Jitsi quality to be very good if the network and the service provider are good.

      Lee

···

On 07/02/2013 10:34 PM, Anthony Papillion wrote:

Hello Everyone,

I've noticed that some of the voice conversations I have are horrible
with lots of breaking up. In those cases, it becomes so bad where one
side usually can't actually make out what the other side is saying.

I'm assuming this has something to do with packet loss and jitter. I'm
wondering if there are any recommendations on how to improve voice
quality? Increasing the bitrate isn't helping (currently using
Opus/48000) so are there any other settings I should try?


#3

We're using an XMPP service hosted on a VPS on the GoDaddy network. Not
local. There seems to be good connectivity between us (less than 2ms
jitter and less than 140ms ping time). Not sure about traffic shaping at
all though.

Yes, I've had some good experiences with Jitsi lately. Just puzzled by
this one lol

Thanks,
Anthony

···

On 07/02/2013 11:19 PM, Lee Sharp wrote:

On 07/02/2013 10:34 PM, Anthony Papillion wrote:

Hello Everyone,

I've noticed that some of the voice conversations I have are horrible
with lots of breaking up. In those cases, it becomes so bad where one
side usually can't actually make out what the other side is saying.

I'm assuming this has something to do with packet loss and jitter. I'm
wondering if there are any recommendations on how to improve voice
quality? Increasing the bitrate isn't helping (currently using
Opus/48000) so are there any other settings I should try?

What is Jitsi connecting to? Is it local? If it is on the Internet, is
there good connectivity between you? Do you have any traffic shaping?

I have found the Jitsi quality to be very good if the network and the
service provider are good.


#4

I too think that ping may be a bit high. Can you post a traceroute? Here is mine, and you can see I am never above 100...

lee@tc-us-dev01:~$ traceroute 4.2.2.2
traceroute to 4.2.2.2 (4.2.2.2), 30 hops max, 60 byte packets
  1 fw-sharp.no-ip.org (192.168.64.1) 0.496 ms 0.540 ms 0.609 ms
  2 108.216.21.254 (108.216.21.254) 70.463 ms 73.239 ms 74.576 ms
  3 12.83.36.225 (12.83.36.225) 78.548 ms 78.767 ms 82.438 ms
  4 gar26.dlstx.ip.att.net (12.123.16.85) 89.201 ms 92.350 ms 92.585 ms
  5 4.68.62.229 (4.68.62.229) 92.750 ms 94.214 ms 95.934 ms
  6 b.resolvers.Level3.net (4.2.2.2) 97.652 ms 96.673 ms 98.373 ms

You may need to look at traffic shaping at your router, or a different connection or host.

      Lee

···

On 07/02/2013 11:27 PM, Anthony Papillion wrote:

We're using an XMPP service hosted on a VPS on the GoDaddy network. Not
local. There seems to be good connectivity between us (less than 2ms
jitter and less than 140ms ping time). Not sure about traffic shaping at
all though.


#5

140ms ping time? That seems quite high. In my experience anything
greater than 100ms could cause problems. However according to some
sources on Internet, maximum tolerable is 150ms (100ms optimum), so you
may be fine here.
Is it ping time to XMPP server? Or to your peer? Do you use relay? If
so, you need to measure latency to the relay from both parties and sum
that up... What is your packet loss, if any?

Some information relating to this e.g. here:
http://forums.whirlpool.net.au/archive/396077

Tomas

···

On 03.07.2013 06:27, Anthony Papillion wrote:

We're using an XMPP service hosted on a VPS on the GoDaddy network.
Not local. There seems to be good connectivity between us (less than
2ms jitter and less than 140ms ping time). Not sure about traffic
shaping at all though. Yes, I've had some good experiences with Jitsi
lately. Just puzzled by this one lol Thanks, Anthony