<div dir="ltr">Hi,<div><br></div><div>sorry to interject into your message, but I was looking to do something similar to Tamas.</div><div><br></div><div>I have the need to prevent the DTMF from being recorded when using record_session. I am using RFC2833 (i think :) ), is this at all possible in the current Freeswitch build?</div>
<div><br></div><div>Matt</div><div class="gmail_extra"><br><br><div class="gmail_quote">On 21 January 2013 07:25, Tamas Jalsovszky <span dir="ltr"><<a href="mailto:jalsot@gmail.com" target="_blank">jalsot@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello Moy,<br><br>Inserting silence instead of the tone would be fine for me. I think the >= 50ms delay in recording is not an issue. I guess, removing from "live" streams would be harder and would introduce the delay you mentioned.<br>
So you have a plan to add such a functionality in the near future? That would be amazing :)<br><br>Regards,<br> Jalsot<br><br><div class="gmail_quote"><div><div class="h5">On Mon, Jan 21, 2013 at 2:48 AM, Moises Silva <span dir="ltr"><<a href="mailto:moises.silva@gmail.com" target="_blank">moises.silva@gmail.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><div><div>On Sun, Jan 20, 2013 at 4:12 PM, Tamas Jalsovszky <span dir="ltr"><<a href="mailto:jalsot@gmail.com" target="_blank">jalsot@gmail.com</a>></span> wrote:<br>
</div></div><div class="gmail_extra"><div class="gmail_quote"><div><div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Hello,<br><br>Is there a way to to remove inbad DTMF from the recorded wav file (conditionaly)?<br>
If not, how could be that done the easyiest way and a way it could get into FS git?<br><br>As FS has a great DTMF detector and it has probably all the stuff doing such a feature, I think it would be much better than using an external tool for removing DTMF from finished wav file - and it would consume more I/O probably.<br>
<br></blockquote><div><br></div></div></div><div>Removing it would not be that hard (ie, inserting silence instead). Removing it without leaving a trace any DTMF was ever there sounds a tad more difficult. If you're ok with inserting a silence instead of the tone, extending the record_session app to detect and remove DTMF is probably what I'd do.</div>
<div><br></div><div>It is also possible to create a new app that monitors the audio stream and silence the stream when DTMF is detected, but since the detection takes a few milliseconds (~50ms), there would be a bit of "bleeding" of DTMF in the signal, unless the new app also delays the signal by 50ms and then has a way to strip the DTMF completely.<br>
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