<div class="gmail_quote">We used to do the following for prompts<br><ol><li>noise gate, say at -40db with a fairly quick attack</li><li>normalize, or use a compressor with agc</li><li>
trim both ends silence</li><li>
add .25 seconds of silence on both ends (may want to skip this for numbers)</li><li>
depending on the media, you can use eq to get rid of say everything below 300hz for gsm, etc, its a good idea to boost the highs and cut the lows at this time also for crySStal clear prompts (opposite of a de-esser)<br></li>
</ol>
this can all be automated through sox or soundforge<br>
<br>
On 5/28/08, Michael Collins <<a href="mailto:mcollins@fcnetwork.com">mcollins@fcnetwork.com</a>> wrote:<br>
> You rock da hizzouse!<br>
><br>
><br>
><br>
> ________________________________<br>
><br>
> From: <a href="mailto:freeswitch-dev-bounces@lists.freeswitch.org">freeswitch-dev-bounces@lists.freeswitch.org</a><br>
> [mailto:<a href="mailto:freeswitch-dev-bounces@lists.freeswitch.org">freeswitch-dev-bounces@lists.freeswitch.org</a>] On Behalf Of Brian<br>
> West<br>
> Sent: Wednesday, May 28, 2008 2:51 AM<br>
> To: <a href="mailto:freeswitch-dev@lists.freeswitch.org">freeswitch-dev@lists.freeswitch.org</a><br>
> Subject: Re: [Freeswitch-dev] Normalizing sound files<br>
><br>
><br>
><br>
> <a href="http://svn.freeswitch.org/svn/sounds/trunk/en/us/callie/dist.sh" target="_blank">http://svn.freeswitch.org/svn/sounds/trunk/en/us/callie/dist.sh</a><br>
><br>
><br>
> That script with sox shows how we do this.<br>
><br>
><br>
> On May 28, 2008, at 2:36 AM, Michael Collins wrote:<br>
><br>> When you get new prompts you mentioned that you "normalize" them so that<br>
> the sound level doesn't vary from one prompt to the next. I have a set<br>
> of prompts that GM Voices recorded specifically for me, but I haven't<br>
> normalized them yet. Could you let me know what process you use for<br>
> this?<br>
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</div><br>-- <br>wasim h. baig | principal consultant | convergence pk | +92 300 8508070