[PLUG] Audio normalization / static removal in Linux

Jason Barnett jason.barnett71 at gmail.com
Mon Oct 18 20:55:08 UTC 2010


I have no clue how to do this, but it sounds like a fun challenge.  If
you want to send me the sample, I'll see what I can come up with... no
guarantees though.

Jason

On Mon, Oct 18, 2010 at 9:26 AM, Rogan Creswick <creswick at gmail.com> wrote:
> I apologize for the tangential nature of this post, but I am hoping
> for a linux-based solution and I don't know where else to ask right
> now.
>
> I have a video of a talk that is spattered with very loud,
> ear-wrenching, bursts of static at random intervals.  There are quite
> a few of these bursts (on average, probably one every 20-30 seconds),
> and they are at least one order of magnitude louder than the important
> audio.  It seems like it should be a simple matter to normalize the
> volume so that it is possible to listen to the audio. I've come to
> terms with the fact that the underlying audio is lost during these
> bursts of static, but I would at least like to make it possible to
> listen to the stream without blasting static randomly.
>
> Does anyone know how to do this? I've stripped the audio and played
> with it in audacity, but I don't know enough to make the options do
> what needs done -- the best I've been able to do is to generate a
> noise profile for a section of static, then use that to reduce the
> static of each individual section.  This requires manually selecting
> the portion of the audio wave that corresponds to the burst of static
> and re-running the noise filter for *every* burst.  That simply
> doesn't scale to the full length of the video--it would be easier to
> simply re-record the talk (which would loose audience commentary,
> etc...).
>
> I would be very appreciative of any suggestions or pointers to audio
> editing communities that may be able to help.  I also have a short
> sample of the video I could share off-list if you'd like to take a
> closer look.
>
> Thanks!
> Rogan
> _______________________________________________
> PLUG mailing list
> PLUG at lists.pdxlinux.org
> http://lists.pdxlinux.org/mailman/listinfo/plug
>



More information about the PLUG mailing list