[asterisk-users] drop dead fix

[Danny Nicholas]

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Gordon
Henderson
Sent: Friday, October 15, 2010 9:18 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] drop dead fix

On Fri, 15 Oct 2010, Danny Nicholas wrote:

> Hello list,
>
>              I am about to have to dump Asterisk in favor of some other
> VOIP/PBX solution;  the reason?  I have 304 voice prompts recorded as
22Khz
> wav format files that sound like crumpling paper whenever I convert them
to
> the 8Khz wav/gsm format required by Asterisk.  I was considering trying
the
> G.729 codec, but reading through the specs, I see that the 8Khz conversion
> is going to dump me into the same pile of dung.  Any body have any
> suggestions?

Why are you converting them to GSM?

Why not convert them to the technology you're using for your phones and 
trunks? That would be much more efficient.

(If you're using g729 for trunks, then that will sound better as GSM to 
g729 conversion does sound bad)

Or maybe it's your conversion software? What are you using?

Gordon

I did the "proof of concept" recordings as gsm files.  Now that we want to
actually do a finished product, the gsm recordings don't sound good enough
to make a viable product.

Here is a sample
Original file
http://www.4shared.com/audio/PDGcMDUt/firstmenuwav.html

file "normalized"
http://www.4shared.com/audio/_wqZzPAq/firstmenu-norm.html

file "trimmed and converted to 8Khz 1 channel"
http://www.4shared.com/audio/I5LBUUKL/firstmenu-trim.html

file "trimmed" and converted to gsm
http://www.4shared.com/file/5A5cKJoZ/firstmenu-trim.html