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Old September 24th, 2010, 09:04 PM   #1
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How to remove that noise - help please.

Please help with suggestion how to "fix" this audio file; there is a noise from either light bulb or PA system mounted in ceiling. I tried to find that frequency but I was unable to remove it. Please help.

Thanks in advance
Noise Removal - camcorder - please help!
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Old September 24th, 2010, 09:48 PM   #2
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Yikes, that's some hum...

All I can think of trying, is iZotope's products. They're not cheap, but I've yet to hear a bad thing about them. There is a trial version, but I'm not sure about the limitations.

iZotope RX - Complete Audio Restoration: Declipping, Declicker, Hum Removal, Denoiser, Spectral Repair, Restore, Remaster, Download

Hope this helps,
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Old September 25th, 2010, 04:48 AM   #3
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You could try Audacity. See the demo at:-

YouTube - guerillabill's Channel

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Old September 25th, 2010, 08:54 AM   #4
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Sound Forge is the equivalent to Audacity in the Sony product line. However, for specific things like this, it's hard to beat the isotope products.
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Old September 25th, 2010, 01:54 PM   #5
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I didn't realize that Audacity had a profile aware noise removal, thanks for the link. I still think the iZotope might be worth a look at though. And for that matter, the Sony noise reduction plugins might be worth looking at, also trial downloadable:

Sony Creative Software - Noise Reduction DirectX Plug-In 2.0

I'm not sure anything is going to work satisfactorily though, likely going to have to be ADR'd and/or background music.

Good luck,
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Old September 25th, 2010, 05:24 PM   #6
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Marius:

Unless you have in mind restoring you audio files on daily base or running a sizeable video business you probably do not want to invest heavily in such professional stuff as iZotope RX or the like.

So you may find useful a few (absolutely free) tricks Iím going to recommend you here.

Please insert 20-band Graphics EQ Audio plug-in into your audio track.

You said that the noise you complained was probably due to ďlight bulb or PA systemĒ; that means the noise main frequency is supposed to be around 50 or 60 Hz (deepening on what your country power frequency is). Therefore, first start to drag down the 40-frequency-band fader to attenuate the noise, then 56-frequency-band fader and so on.

You can also try Express FX Equalization for a first fix.

Of course, this solution isnít perfect but itís worth to try before you decide to open your pocket or reach for your credit card.
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Old September 27th, 2010, 01:17 PM   #7
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thanks for all of your help; I used Audacity and it worked well (not perfect bur OK);
THANKS AGAIN!!!
btw - can Audacity be used to remove unwanted echo from audio file???
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