[Asterisk-Users] feature - VM gain adjust?

[Seth Remington]

What about a "post processor" that performs Compression/Normalization on
the recorded voice mail file?

On the down side I can see this being a big CPU hog if you are handling
a huge amount of calls and trying to normalize a 5 minute long voicemail
at the same time.

On the upside you don't have to concern yourself determining line loss
or similar things. You also wouldn't have to worry about what I call the
"Seinfeld Syndrome": quit talker / loud talker issues. You would just
have two new variables in voicemail.conf - normalization=yes or no and
another to set the db value.

-Seth

On Mon, 2004-07-12 at 08:46, Rich Adamson wrote:
> > > Are you suggesting such a thing exists, or that that would be a
> > > proposed future application?
> > 
> > I propose to think if an AGC / dynamic compressor could be used instead of 
> > a config variable.
> > 
> > Most sound editors have modules for this.
> 
> So how would you detect the remote caller is 14.7 db away from *
> and adjust the 'outbound' voice message to be at some higher 
> audio level?
> 
> I like the AGC approach, but I'm not sure its realistic in terms of
> consistently being able to identify the transmission loss from
> each and every vm call. Since we know what the loss is for each
> pstn line (to the central office), it would appear that static
> value would be a good starting point and the user could adjust from
> there. Much easier (and more likely) to implement.
> 
> 
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-- 
Seth Remington
SaberLogic, LLC
661-B Weber Drive
Wadsworth, Ohio 44281
Phone: (330)335-6442
Fax: (330)336-8559