[TriLUG] automated Audio processing in Linux

[Marty Ferguson]

1 more thing...

It occured to me that the white-noise detector needs to have some sort of
hysterisis so that when there is a moment of silence in a dialog (between 2
or more
parties hitting the ptt switch) that the conversation stays in a single file
instead
of being busted up into several little files.  There still may be some
aliasing
problems, but adding some hysterisis to the switch will certainly help.

Marty

-----Original Message-----
From: trilug-bounces at trilug.org [mailto:trilug-bounces at trilug.org]On
Behalf Of Jeremy Portzer
Sent: Monday, March 22, 2004 5:32 PM
To: Triangle Linux Users Group discussion list
Subject: Re: [TriLUG] automated Audio processing in Linux


On Mon, 2004-03-22 at 17:30, William R. Gomeringer wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> There is a sound utility for backing up and restoring old vinyl recordings
> called gramofile. It's quite possible that he is using that. Along with
> Audacity you have a powerful suite for ripping records to mp3/ogg. I don't
> believe either of these programs has the ability to do what you want,
Jeremy.
> If I understand correctly you are looking for something that will record
> audio unattended, or record audio when it encounters something other than
> white noise. You need something to "trip' the record function when it
hears
> non-white noise and shut off when it encounters only white-noise. You
could
> always do what Marty suggested and just record a continuous stream and
strip
> out the white noise. I think that would be far easier. You could also have
a
> look at the Linux Audio pages:
> http://linux-sound.org/

Marty's workflow makes sense -- it doesn't need to be 100% real time.

Thanks for the hints, folks.  I'll let you know what I come up with!

--Jeremy


--
/---------------------------------------------------------------------\
| Jeremy Portzer        jeremyp at pobox.com      trilug.org/~jeremy     |
| GPG Fingerprint: 712D 77C7 AB2D 2130 989F  E135 6F9F F7BC CC1A 7B92 |
\---------------------------------------------------------------------/