Cleaning sound up on video clips I've recorded? Lose background noise, keep voice etc

edited February 2012 in Chit chat
Anyone know of any freeware that can do this?

Today, for example, I recorded about 20 minutes of bike riding, with an external mic, but an open face crash helmet. Under 20mph by comments are quite audible, 20 to 30 they are lost a bit by the noise of the engine.

I'd like to clean the footage up, remove, or lessen engine and wind noise, keep my voice the same.

Any ideas?
Post edited by thx1138 on

Comments

  • edited February 2012
    If the video is in an avi container you could use VirtualDubMod or Avidemux to get the audio out of the container, then experiment with frequencys in Audacity. All freeware.

    I use Audacity to cut out the singing from musictracks when i make my own karaokes, but it has an automated option for this.
  • edited February 2012
    use CSIEdit... The button you're looking for is between enhance and uncrop...

    ;)
  • fogfog
    edited February 2012
    it depends on the engine, i mean at lower revs the Hz aren't near your vocal range.. you can cut out some of the sound, but well not everything.

    www.waset.org/journals/ijice/v6/v6-2-17.pdf

    might be a nice read.. I know about audio stuff, but not bikes.. errm 400hz seems to be common range though, I guess it's more the rev's and how the engine is working that effects the noise level also.

    i'd say send me the audio if you wanted IF you could put it back into the video.. not sure how big the video would be..

    with metering tools, it's easy to show where your voice is range wise before the engine gets too noisey.
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