Its happening when I call Freeswitch with an extension that just plays a
wav file back to the caller. There is a certain part that is louder than
the rest of the file, but there is no clipping in the actual file, i.e
when played back through Audacity on the same PC running Jitsi there is no
So that takes the yealink phones out of the equation.
So it the call setup is:
Jitsi -> Freeswitch (plays wav file to caller)
With G722 it distorts at a certain point, with PCMU or OPUS it doesn't
I've attached part of the file, its the bit at the beginning where it says
For wav files its not so much of an issue as I can just alter the file,
but this is occurring during live conversations, but this is a good
example of the issue.
usMandarinIvr2.wav (33.3 KB)
Is that happening from Jitsi to Jitsi too? Or does it only occur when
you have a hardphone involved?
On 30.01.13, 18:23, Tom Parrott wrote:
Its OK with OPUS too, seems G722 decoding is problematic at higher
Thanks for the suggestion, I have tried turning it down to 1 notch
silent, but the clipping still occurs, albeit it quieter.
It's also happening on two different PCs with different versions of the
nightly build, one of them (mine) is bang up-to-date (1.1.4450.10402)
the other is a few weeks old (1.1.4392.10245).
We are both using the G722 codec, although it still happens when using
Could it be that you up-ed the Jitsi volume of your speakers at some
point? We do stream amplification for incoming flows so the effect
be similar to what you describe. Can you try taking it down a notch?
(You get a slider when you click on the speaker button to the left of
the audio levels).
On 30.01.13, 16:38, Tom Parrott wrote:
Recently I have started to notice that Jitsi seems to distort audio
to the headset or speakers of the PC user.
To provide a scenario that has occurred today:
*Freeswitch conference bridge
*2 x Yealink hard phones connect to bridge.
*2 x Jitsi soft phones connect to bridge.
When a Yealink user speaks loudly the sound is distorted for the
users, but not for the other Yealink user.
Also I have noticed when Jitsi dials into an IVR on Freeswitch and
wav file the sound is also distorted if the wav file is loud in
It sounds like the sound is being clipped, does anyone know what
causing this? I don't remember it happening in V1 Jitsi.