Re: [Ekiga-list] Bad frequency response with Ekiga

[Craig Southeren <craigs postincrement com>]

Thanks for taking the time do this analysis and share the results!

The Ekiga output is definitely showing a filtered response. The only 
filter in the audio chain is the Automatic Echo Cancellation - did you 
have that enabled when doing the measurements?

This would certainly explain the output.

   Craig

On 5/05/2013 6:49 AM, geo cherchetout wrote:
> Hello,
>
> Using Ekiga v.3.9.90 and the line input of his soundcard, and PCMA
> codec, Foo sends white noise to Bar who receives and records this sound
> with Linphone v.3.5.99.0. (Recent versions of Linphone make recording
> easy, the recorded sound being extracted from rtp streams, not from
> soundcard.)
> Then, using Audacity, Bar displays the spectrum of the recorded sound.
> You can see it here: http://pix.toile-libre.org/?img=1367698438.png
>
> Now, the same experiment is made with Foo and Bar using the same
> Linphone v.3.5.99.0 softphone, and the spectrum is much better as you
> can see there:
> http://pix.toile-libre.org/?img=1367698567.png
>
> Perhaps there is something like a wrong equation in Ekiga's or some
> library's code ? Or this is a feature and not a bug ?
> I am able to compile Ekiga but not to modify the code by myself...
>
> _______________________________________________
> ekiga-list mailing list
> ekiga-list gnome org
> https://mail.gnome.org/mailman/listinfo/ekiga-list


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