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Subject:Noise Removal of Wind
Posted by: carolinaadi
Date:9/29/2007 11:05:02 AM

I just uploaded a short video clip from my camera to the Movie Studio Software but the audio has a ton of wind in it.

I figured out how to save just the audio file (wma) and can open it using SF7.0.

However, how do I remove all of that unwanted noise (wind, airplane. etc) so I can hear only the person's voice?

thanks for any suggestions that you may have!

Subject:RE: Noise Removal of Wind
Reply by: Chienworks
Date:9/29/2007 11:17:35 AM

Sorry to tell you this, but the only realistic way to do this is to go back and shoot it again, making sure you prevent the wind sound to begin with. There's almost nothing that can be done for that sort of noice once it's recorded.

What you could try doing is using Graphic EQ to cut all frequencies except the normal voice band, say maybe everything below 250Hz and above 1KHz or so. This may make the voice sound a bit tinny, but it will remove more of the wind sound than voice so it may help a little bit.

Subject:RE: Noise Removal of Wind
Reply by: Kennymusicman
Date:9/29/2007 11:21:06 AM

The bad news is there is no easy and fast solution to problems such as wind (!). lol
With noise such as air-conditioning, or something consistant, you can take a snapshot of the noise footprint, invert this (in terms of phasing) and use this to cancel itself out - the noise reduction plugin that comes with SF is excellent at that,

For irregular noise, such as wind, and traffic, and so forth, this trick is much harder as there is no constant noise footprint.

IF you have them in v7, look at the audio restoration tools - try perhaps making an artificial amplitude level to effectively silence below - ie, say your dialogue is above -60dB, then forcing everything below -60 could reduce many of the noise problems.

EQ is another item to try - wind especially tends to create low frequency rumbles - make a selection at the necessary parts and try and EQ them down.

The trick is moderation in all cases - making stuff less obtrusive as opposed to getting rid of it - as tryring too hard usually ends up being more destructive overall.



Subject:RE: Noise Removal of Wind
Reply by: jumbuk
Date:9/30/2007 9:27:53 PM

I second Kenny on use of Sony NR. Don't try to eliminate the wind 100%, just reduce to a manageable level. Also, cut hi freq to remove any "hiss" and low freq for "rumble".

You might try using a side-chain compressor to feed into NR and EQ so it just cuts when the noise is loudest.

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