asterisk users - Feb 2007 - GSM cleanup (pops, clicks and static)

I have a bunch of sounds that I've converted into gsm from (Indexed NMS) vox
files. There's only a single utility that I've found that can read and
convert vox files. My conversion process is to use this utility to convert
the index vox file in to a series of wave files and then use sox to convert
the wave files to gsm files. Over all this works really well, the problem is
that about 60 to 70 percent of the gsm files have some static or popping and
clicking, on most of them it is in the silence at the end of the file.

All that back story to ask this question: Are there any good utilities
available for cleaning up gsm files?

Thanks,

David Ruggles
CCNA MCSE (NT) CNA A+
Network Engineer	Safe Data, Inc.
(910) 285-7200	david@safedatausa.com

Audacity  
> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com 
> [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of 
> David Ruggles
> Sent: Friday, February 23, 2007 4:48 PM
> To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
> Subject: [asterisk-users] GSM cleanup (pops, clicks and static)
> 
> I have a bunch of sounds that I've converted into gsm from 
> (Indexed NMS) vox files. There's only a single utility that 
> I've found that can read and convert vox files. My conversion 
> process is to use this utility to convert the index vox file 
> in to a series of wave files and then use sox to convert the 
> wave files to gsm files. Over all this works really well, the 
> problem is that about 60 to 70 percent of the gsm files have 
> some static or popping and clicking, on most of them it is in 
> the silence at the end of the file.
> 
> All that back story to ask this question: Are there any good 
> utilities available for cleaning up gsm files?
> 
> Thanks,
> 
> David Ruggles
> CCNA MCSE (NT) CNA A+
> Network Engineer	Safe Data, Inc.
> (910) 285-7200	david@safedatausa.com
> 
> 
> 
> _______________________________________________
> --Bandwidth and Colocation provided by Easynews.com --
> 
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users
>

On Fri, 2007-02-23 at 16:48 -0500, David Ruggles wrote:
> I have a bunch of sounds that I've converted into gsm from (Indexed
NMS) vox
> files. There's only a single utility that I've found that can read
and
> convert vox files. My conversion process is to use this utility to convert
> the index vox file in to a series of wave files and then use sox to convert
> the wave files to gsm files. Over all this works really well, the problem
is
> that about 60 to 70 percent of the gsm files have some static or popping
and
> clicking, on most of them it is in the silence at the end of the file.
> 
> All that back story to ask this question: Are there any good utilities
> available for cleaning up gsm files?
> 
I've been playing around quite a bit lately! If I were you, I'd take
those wav files, and use audacity to inspect and clean them, then do the
sox thing to get to gsm. If they are clean in wav, they should be clean
in gsm.

murf

-- 
Steve Murphy
Software Developer
Digium
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 3227 bytes
Desc: not available
Url :
http://lists.digium.com/pipermail/asterisk-users/attachments/20070223/6259da66/smime.bin