[Freeswitch-users] Removing echo.

[Anthony Minessale]

The best place for echo cancelation is in the clients as close to the mic
as possible.
Someone asked why skype and some apps are better.  It's because they have
echo cans in the client app.
Sip soft phones are basically toys unless they have some kind of advanced
gain and echo controls on your pc because that is where your mic is and
could have the vol turned up too high etc.

>From FS perspective in the middle, we can't tell its echo or not because we
are just passing the data along and we're typically getting it 30-70 ms too
late.


In general, you don't get echo when using real phones because they have
proper hardware and software to deal with the place where the audio is
being sampled and rendered.






On Mon, Mar 18, 2013 at 5:15 PM, Christopher Rienzo <cmrienzo at gmail.com>wrote:

> Echo cancellation is not easy.  The only open source one I've seen is GPL
> (making it license incompatible with FreeSWITCH) and is not suitable for
> handling echo over IP networks.  Perhaps tricks are being played using VAD
> to only allow only one speaker at a time in the ooVoo conference?
>
>
>
> On Mon, Mar 18, 2013 at 5:53 PM, Mimiko <vbvbrj at gmail.com> wrote:
>
>> Today we tried ooVoo conference system with theirs client using same
>> boxes and microphones - again, no echo. How this can be? Is it only
>> commercial products have echo removing function?
>>
>> --
>> Mimiko desu.
>>
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>
>
> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
>
> 
> 
>
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>
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-- 
Anthony Minessale II

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