[FFmpeg-user] Removing audio noise

[littlebat]

On Sat, 19 Apr 2014 12:27:21 +0200
Cecil Westerhof <Cecil at decebal.nl> wrote:

> At the moment I am using:
> ffmpeg -async 1
>        -f alsa
>        -ac 1
>        -i hw:1,0,0
>        -f x11grab -s 1920x1080
>        -r 25
>        -i :0.0
>        -acodec libmp3lame
>        -ar 22050
>        -ab 64k
>        -qscale:video 4
>        2014-04-19_12:24.avi
> 
> This works reasonably good. The only problem is that there is some
> white noise in the audio. Is there a way to filter this away?
> 

Maybe this article will help:
How To Do Noise Reduction Using ffmpeg And sox:
http://www.zoharbabin.com/how-to-do-noise-reduction-using-ffmpeg-and-sox/