[Freeswitch-dev] silence on a native recording

[Anthony Minessale]

You cannot detect silence on an encoded format because you would have to
decode it to be able to detect the silence.
If you want to detect silence use a standard wav/pcm format.


On Fri, Sep 4, 2009 at 3:52 PM, Peter Volchek <pvolchek at voicemobility.com>wrote:

> Hi,
> I am getting the warnings in the freeswitch.org , saying...
>
> [WARNING] switch_ivr_play_say.c:567 Can't detect silence on a native
> recording.
>
> This is thrown each time I am calling session:recordFile in my lua
> scripts. I am not specifying any extensions, thus relaying on the
> encoding type chosen by freeswitch. So the files are given extensions
> .PCMU.
> I've been told that this is a harmful warning.
> However, we need an ability to detect the silence in the following
> scenario.
> In a voicemail, while the caller is leaving a message, he can mute his
> phone. The application may kick up the event, saying that silence is
> detected, so we would pause the recording and play the prompt "Are you
> still there?" to the caller.
>
> Thanks.
>
>
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-- 
Anthony Minessale II

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