[Freeswitch-users] Audio clipping in mod_conference

[Hynek Cihlar]

Is it only conference related or may it affect other apps?

Hynek



2011/11/3 Roland Hänel <roland at haenel.me>

> Hi,
>
> During thorough testing of our conference solution which is based on
> FreeSwitch / mod_conference, we noticed some 'audio clipping' during the
> conference. Typically, if a conference member didn't have audio for some
> time and then begins to speak, the first syllable will be clipped and
> cannot be heard by the other conference participants.
>
> We ruled out a number of possible causes, and finally discovered that the
> energy level detection algorith seems to be the source of the problem.
> Setting the energy level for all participants to "0" heals the problem (of
> course now the noise might be higher since every participant's noise
> contributes to the total noise), but this setting is not very useful since
> the "talking detection" seems to rely on the same level, i.e. with energy
> "0", all members are marked talking all the time (which effectively renders
> the "talking" display useless).
>
> Is there any chance to tune the energy level detection time (!), or to
> de-couple talking detection an energy level detection in FreeSwitch?
>
> Best regards,
> Roland
>
>
>
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