Filter applause from videos

I am currently watching a video from 27C3 and I would like to filter the applause, as it is very loud. Is this possible? I have heard something like this was made for Vuvuzelas.

I use Ubuntu. If this filter would work via ffmpeg this would be great. If it is written in Python it would also be ok.

Here is an example: http://www.you开发者_运维技巧tube.com/watch?v=TIViQuCX7XM#t=5m4s

No, this isn't possible. The sound of applause covers a very wide band. Filtering vuvuzelas was somewhat possible because they were all close to the same pitch. Applause is all over.

If you want to experiment, pull up this video and play with your EQ in VLC. Even with the wide bands of a 7-band EQ, you'll be dropping quite a few to cut the audience, thus leaving you with nothing.

As Brad said, this is not possible with a static frequency filter, however, if you have some knowledge in signal theory, and a fair lot of free time, you could write an active noise control system. See google scholar for some examples of such a filter (like this one).

You could use a dynamic range compressor, this will not filter out the applause, but at least it will smooth out the loudness. You can give it a threshold so that it doesn't affect sound below that threshold.