Wind noise reduction?

Klaus Christo · Post by **Klaus Christo** » Tue Jun 28, 2005 1:54 pm

Does anyone know an easy way of getting rid of wind noise in home movies? Besides just reducing the volume levels, or muting, or fiddling with the volume line.
thanks

Delme · Post by **Delme** » Tue Jun 28, 2005 2:23 pm

Not that it will help your current problem of "wind noise"

(sorry childish, I know) on your video but you may find that your camera has an option in the audio menu somewhere called "Windsheild" or an option to turn on to help with wind noise reduction. It may help in future.

I've got the setting on mine but I'm not sure how much it helps.

As far as VS is concerned, I really can't think of anything.

jbowen28 · Post by **jbowen28** » Wed Jun 29, 2005 4:37 pm

I do not know how effective a camcorder's electronic wind noise filter is but my camera manual says that it will lower the video quality so I do not use it. What I have found that is very effective on almost any microphone for eliminating wind noise is a thick piece of cotton cloth ( a sock is what I use ). I have not tried it on my camcorder yet but I plan to permanently attach a thick piece of cotton cloth on my camcorder microphone.

THoff · Post by **THoff** » Wed Jun 29, 2005 6:24 pm

You could try saving the audio to a separate file (using Share -> Create Audio File), and the processing the audio file using Audacity, a very nice, free audio editor.

It has a noise reduction filter which must be given an example of the noise you wish to remove (a section of audio with just wind noise and no voices etc. would be best), and it will then clean up the audio file based on that.

It won't be perfect, but it should help reduce the problem. Of course, as jbowen28 said, the best way would be to use a sock of some sort and not record the noise in the first place.

kebrinton · Post by **kebrinton** » Thu Jun 30, 2005 6:08 pm

As THoff says.

I clean up audio tracks using Sound Forge but Audacity shouldn't be much different.

The main thing is not to alter the length of the track because you're going to fit it back into its original slot. Any deletion of clicks, coughs, etc. (obvious, I know) will put the track out-of-sync (OOS) with the video track.

If you can find a short (1 second is enough) segment with JUST the wind sound, the program can memorize this and subtract it from the entire track. My program lets me run the same "subtraction" process more than once, and the difference is startling.

However it is essential not to subtract any sound that you wish to be there.

Keith

THoff · Post by **THoff** » Thu Jun 30, 2005 6:34 pm

Yeah, I guess I forgot to mention the final step: mute the sound track of the original video in UVS (or use the Split Audio command to separate the audio from the video and then delete the audio), then drop the cleaned-up audio you processed with Audacity or SoundForge into one of the audio tracks below the video track. Next, render a new output file and burn a DVD.

Post by **Ron P.** » Sun Jul 03, 2005 11:29 pm

This method does work quite well. I use Audacity and found out how well it does. I had a project (video) where the client was talking to a girl he had just met( now his wife), in a loud crowded diner. He needed a conversation to be heard that was muffled by the crowd. So I done just what THoff suggested and wow the conversation jumped right out.. btw the conversation was an early proposal and very important to the project...