How to remove that noise

Marius Boruch · September 24th, 2010, 08:04 PM

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
http://www.dvinfo.net/forum/all-thin...ease-help.html

Craig Longman · September 24th, 2010, 08:48 PM

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,

Richard Jones · September 25th, 2010, 03:48 AM

You could try Audacity. See the demo at:-

YouTube - guerillabill's Channel

Richard

Edward Troxel · September 25th, 2010, 07:54 AM

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.

Craig Longman · September 25th, 2010, 12:54 PM

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,

Arkady Bolotin · September 25th, 2010, 04:24 PM

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 I’m 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 “light bulb or PA system”; 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 isn’t perfect but it’s worth to try before you decide to open your pocket or reach for your credit card.

Marius Boruch · September 27th, 2010, 12:17 PM

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???

September 24th, 2010, 08:04 PM	#1
Marius Boruch Major Player Join Date: Aug 2005 Posts: 421	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 http://www.dvinfo.net/forum/all-thin...ease-help.html

September 24th, 2010, 08:48 PM	#2
Craig Longman Regular Crew Join Date: Jul 2010 Location: London, ON Posts: 175	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, __________________ CraigL

September 25th, 2010, 07:54 AM	#4
Edward Troxel Sponsor: JET DV Join Date: Dec 2001 Location: Southern Illinois Posts: 7,953	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. __________________ Edward Troxel [SCVU] JETDV Scripts/Scripting Tutorials/Excalibur/Montage Magic/Newsletters

September 25th, 2010, 12:54 PM	#5
Craig Longman Regular Crew Join Date: Jul 2010 Location: London, ON Posts: 175	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, __________________ CraigL

September 25th, 2010, 03:48 AM	#3
Richard Jones Regular Crew Join Date: Apr 2007 Location: Woking, England Posts: 116	You could try Audacity. See the demo at:- YouTube - guerillabill's Channel Richard

September 25th, 2010, 04:24 PM	#6
Arkady Bolotin Regular Crew Join Date: Sep 2008 Location: Beersheba, Israel Posts: 111	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 I’m 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 “light bulb or PA system”; 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 isn’t perfect but it’s worth to try before you decide to open your pocket or reach for your credit card.

September 27th, 2010, 12:17 PM	#7
Marius Boruch Major Player Join Date: Aug 2005 Posts: 421	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???