Variable Repeat Audio Delay

App_rpt has an indeterminate repeat audio delay on our system. Sometimes we hear ourselves when we unkey other times not. The amount of delay varies from near zero to four or five words. Has anybody else experienced this on their system?

···

--
Tim
:wq

I had a lot of fun with this a while back

Can I assume you have more than one box on your system?
And perhaps you have played with the jitterbuffer settings I IAX config?

In my case, there was some problem on my network or some unwanted behavior
of my router and a delay of up to

resyncthreshold=

would accumulate during quiet periods. If I had this set to 2000, for
example, and came on the air as it reached 1990, then I could hear nearly
two seconds of audio being played back at me.

From the CLI type:

iax2 show channels

This will show where the delay is building up.

I found that I had to have my private nodes periodically "pinging" something
through the router; and for good measure I put the local IP addresses of all
the common system nodes (even the registering ones) in the config files. I
set resyncthreshold=300 so that even if there is a problem, any delay is
hardly noticeable.

73
Ken

···

-----Original Message-----
From: app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-
bounces@ohnosec.org] On Behalf Of Tim Sawyer
Sent: Monday, October 24, 2011 10:08 AM
To: app_rpt list
Subject: [App_rpt-users] Variable Repeat Audio Delay

App_rpt has an indeterminate repeat audio delay on our system.
Sometimes we hear ourselves when we unkey other times not. The amount
of delay varies from near zero to four or five words. Has anybody else
experienced this on their system?
--
Tim
:wq

_______________________________________________
App_rpt-users mailing list
App_rpt-users@ohnosec.org
ohnosec.org

Just to be sure we are talking about the same thing.... it's repeat audio delay I'm talking about, not the delay between nodes, correct? In other words, you are saying that the jitter buffer affected repeat audio?

···

--
Tim
:wq

On Oct 24, 2011, at 7:40 AM, Ken wrote:

I had a lot of fun with this a while back

Can I assume you have more than one box on your system?
And perhaps you have played with the jitterbuffer settings I IAX config?

In my case, there was some problem on my network or some unwanted behavior
of my router and a delay of up to

resyncthreshold=

would accumulate during quiet periods. If I had this set to 2000, for
example, and came on the air as it reached 1990, then I could hear nearly
two seconds of audio being played back at me.

From the CLI type:

iax2 show channels

This will show where the delay is building up.

I found that I had to have my private nodes periodically "pinging" something
through the router; and for good measure I put the local IP addresses of all
the common system nodes (even the registering ones) in the config files. I
set resyncthreshold=300 so that even if there is a problem, any delay is
hardly noticeable.

73
Ken

-----Original Message-----
From: app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-
bounces@ohnosec.org] On Behalf Of Tim Sawyer
Sent: Monday, October 24, 2011 10:08 AM
To: app_rpt list
Subject: [App_rpt-users] Variable Repeat Audio Delay

App_rpt has an indeterminate repeat audio delay on our system.
Sometimes we hear ourselves when we unkey other times not. The amount
of delay varies from near zero to four or five words. Has anybody else
experienced this on their system?
--
Tim
:wq

_______________________________________________
App_rpt-users mailing list
App_rpt-users@ohnosec.org
ohnosec.org

Yes and no. I am talking about cross-band repeated audio where multiple
computers are involved. Hence my comment about more than one box.

If your audio is staying entirely within the same box, then iax
communications are not involved.

There is a sort of jitter buffer on the USB sound system as well.
I suppose problems with the USB comms could create a similar delay within
one box.
This should not happen though ... possibly if you are running other programs
or GUI, that would cause the problem - or, if you have some energy-star BIOS
feature enabled so that your computer is taking a nap when not much is going
on ...

GL
Ken

···

-----Original Message-----
From: Tim Sawyer [mailto:tim.sawyer@me.com]
Sent: Monday, October 24, 2011 10:53 AM
To: app_rpt list
Cc: Ken
Subject: Re: [App_rpt-users] Variable Repeat Audio Delay

Just to be sure we are talking about the same thing.... it's repeat
audio delay I'm talking about, not the delay between nodes, correct? In
other words, you are saying that the jitter buffer affected repeat
audio?
--
Tim
:wq

On Oct 24, 2011, at 7:40 AM, Ken wrote:

> I had a lot of fun with this a while back
>
> Can I assume you have more than one box on your system?
> And perhaps you have played with the jitterbuffer settings I IAX
config?
>
> In my case, there was some problem on my network or some unwanted
behavior
> of my router and a delay of up to
>
> resyncthreshold=
>
> would accumulate during quiet periods. If I had this set to 2000,
for
> example, and came on the air as it reached 1990, then I could hear
nearly
> two seconds of audio being played back at me.
>
> From the CLI type:
>
> iax2 show channels
>
> This will show where the delay is building up.
>
> I found that I had to have my private nodes periodically "pinging"
something
> through the router; and for good measure I put the local IP addresses
of all
> the common system nodes (even the registering ones) in the config
files. I
> set resyncthreshold=300 so that even if there is a problem, any delay
is
> hardly noticeable.
>
> 73
> Ken
>
>
>
>> -----Original Message-----
>> From: app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-
>> bounces@ohnosec.org] On Behalf Of Tim Sawyer
>> Sent: Monday, October 24, 2011 10:08 AM
>> To: app_rpt list
>> Subject: [App_rpt-users] Variable Repeat Audio Delay
>>
>> App_rpt has an indeterminate repeat audio delay on our system.
>> Sometimes we hear ourselves when we unkey other times not. The
amount
>> of delay varies from near zero to four or five words. Has anybody
else
>> experienced this on their system?
>> --
>> Tim
>> :wq
>>
>> _______________________________________________
>> App_rpt-users mailing list
>> App_rpt-users@ohnosec.org
>> ohnosec.org
>

I can't see why hangtime would affect it any. But yep, it let's us know it's working. The delay itself is only slightly bothersome but fact that it varies from near zero at times to a second or more at other times is very weird.

···

--
Tim
:wq

On Oct 24, 2011, at 8:06 AM, Mars - N0PCO wrote:

On 10/24/2011 09:53 AM, Tim Sawyer wrote:

Just to be sure we are talking about the same thing.... it's repeat audio delay I'm talking about, not the delay between nodes, correct? In other words, you are saying that the jitter buffer affected repeat audio?
--
Tim
:wq

Check your hangtime and althangtime in rpt.conf for the node that has
the problem with audio being echoed when unkeyed. Longer hangtime will
tend to present the problem that you mentioned.

But it sure lets one know that things are working, huh? :wink:

Havaday

--
Mars, N0PCO
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