Possible to remove door slam sound in post? at DVinfo.net

Jose Milan · October 10th, 2007, 06:07 AM

Hello,

I have footage in which I have the sound of a slamed door while the person is talking, is there a way to eliminate this sound or at least make it less clear.

I use Cool Edit Pro 2.0 as editing tool, is there a simple way to fix it? I have very basic knowledge.

Thanks.

Mike Teutsch · October 10th, 2007, 06:41 AM

Adobe Sound Booth may be able to do it. I think you might be able to download it for a free trial at the Adobe Site.

Mike

Jose Milan · October 10th, 2007, 06:46 AM

Hello Mike,

Isn't possible with Cool Edits...seems like a very powerfull software, I already use it in my productions...I remove noise and pop the sound, it must be able to to it also.

But I tried to download the software you mention. Does it has a special feature to do it automatically or are there step to fallow??? Link to the steps? or maybe in its help menu?

Thanks

Roger Shore · October 10th, 2007, 06:55 AM

To reduce volume of door slam in Cool Edit Pro 2, left click and drag to highlight section containing 'door slam' data, click 'zoom to selection' (immediately to the right of the record button). Repeat if necessary until you can distinghish just the 'door slam' peak. Highlight this data from nearest zero crossing (centre line) at start and finish of 'slam' peak.

Left click 'Effects' from top toolbar, then 'amplitude' and 'amplify' (or just click on 'Amplify, Fade in, Fade out' button if you know where that is) and set attenuation to match surrounding levels.

Note that you will also attenuate any spoken words that coincide with the slam, but there's nothing you can do about that I'm afraid. Shouldn't be too much of a problem if you are just attenuating the short 'door slam' data.

Mike Teutsch · October 10th, 2007, 07:12 AM

In sound booth you can bring the audio in and go into its vector form. You will be able to "see" the door slam. Then click "Remove a Sound." You then highlight the area of the door slam, and simply turn it down to nothing. That leaves the rest of the sound at that instant intact, expect if it is exactly the same pitch of course.

Mike

Dave Robinson · October 10th, 2007, 07:31 AM

A more manual method of removing the sound would be to open the audio file in something similar to Sound Forge.
Duplicate the audio file so you have two versions.
Isolate the door slam sound in one of the tracks and try and remove everything else, so all you have left is the sound of the door slamming.
Then invert the waveform and recombine it with the original, this should be quite effective at the removing the unwanted noise.

Mike Teutsch · October 10th, 2007, 07:35 AM

A screen print of a removal.

Mike

http://www.dvinfo.net/conf/attachmen...1&d=1192023282
Screen.jpg

Jose Milan · October 10th, 2007, 08:02 AM

Hello everybody,

Thanks for the reply and also for the steps, I'll be trying the options after I finish the video edits and I'll post how it went either today or tomorrow if anyone care to know.

Thanks again!

Michael Nistler · October 11th, 2007, 04:23 AM

Hi Jose,

Incidentally, since a door slam is fairly short, if the talent spoke the same word elsewhere, you might consider using a cut-and-paste to over-write the door slam.

Enjoy, Michael

October 10th, 2007, 06:07 AM	#1
Jose Milan Regular Crew Join Date: Jun 2007 Location: Spain Posts: 185	Possible to remove door slam sound in post? Hello, I have footage in which I have the sound of a slamed door while the person is talking, is there a way to eliminate this sound or at least make it less clear. I use Cool Edit Pro 2.0 as editing tool, is there a simple way to fix it? I have very basic knowledge. Thanks.

October 10th, 2007, 06:41 AM	#2
Mike Teutsch Inner Circle Join Date: Oct 2004 Location: Port St. Lucie, Florida Posts: 2,614	Adobe Sound Booth may be able to do it. I think you might be able to download it for a free trial at the Adobe Site. Mike __________________ Chapter one, line one. The BH.

October 10th, 2007, 07:12 AM	#5
Mike Teutsch Inner Circle Join Date: Oct 2004 Location: Port St. Lucie, Florida Posts: 2,614	In sound booth you can bring the audio in and go into its vector form. You will be able to "see" the door slam. Then click "Remove a Sound." You then highlight the area of the door slam, and simply turn it down to nothing. That leaves the rest of the sound at that instant intact, expect if it is exactly the same pitch of course. Mike __________________ Chapter one, line one. The BH.

October 10th, 2007, 07:35 AM	#7
Mike Teutsch Inner Circle Join Date: Oct 2004 Location: Port St. Lucie, Florida Posts: 2,614	A screen print of a removal. Mike http://www.dvinfo.net/conf/attachmen...1&d=1192023282 Screen.jpg Attached Thumbnails __________________ Chapter one, line one. The BH.

October 11th, 2007, 04:23 AM	#9
Michael Nistler Major Player Join Date: Aug 2006 Location: Petaluma, CA Posts: 456	How audio editors "cheat" Hi Jose, Incidentally, since a door slam is fairly short, if the talent spoke the same word elsewhere, you might consider using a cut-and-paste to over-write the door slam. Enjoy, Michael

October 10th, 2007, 06:46 AM	#3
Jose Milan Regular Crew Join Date: Jun 2007 Location: Spain Posts: 185	Hello Mike, Isn't possible with Cool Edits...seems like a very powerfull software, I already use it in my productions...I remove noise and pop the sound, it must be able to to it also. But I tried to download the software you mention. Does it has a special feature to do it automatically or are there step to fallow??? Link to the steps? or maybe in its help menu? Thanks

October 10th, 2007, 06:55 AM	#4
Roger Shore Regular Crew Join Date: Apr 2007 Location: UK Posts: 113	To reduce volume of door slam in Cool Edit Pro 2, left click and drag to highlight section containing 'door slam' data, click 'zoom to selection' (immediately to the right of the record button). Repeat if necessary until you can distinghish just the 'door slam' peak. Highlight this data from nearest zero crossing (centre line) at start and finish of 'slam' peak. Left click 'Effects' from top toolbar, then 'amplitude' and 'amplify' (or just click on 'Amplify, Fade in, Fade out' button if you know where that is) and set attenuation to match surrounding levels. Note that you will also attenuate any spoken words that coincide with the slam, but there's nothing you can do about that I'm afraid. Shouldn't be too much of a problem if you are just attenuating the short 'door slam' data.

October 10th, 2007, 07:31 AM	#6
Dave Robinson Major Player Join Date: Apr 2007 Location: Conwy, Wales Posts: 208	A more manual method of removing the sound would be to open the audio file in something similar to Sound Forge. Duplicate the audio file so you have two versions. Isolate the door slam sound in one of the tracks and try and remove everything else, so all you have left is the sound of the door slamming. Then invert the waveform and recombine it with the original, this should be quite effective at the removing the unwanted noise.

October 10th, 2007, 08:02 AM	#8
Jose Milan Regular Crew Join Date: Jun 2007 Location: Spain Posts: 185	Hello everybody, Thanks for the reply and also for the steps, I'll be trying the options after I finish the video edits and I'll post how it went either today or tomorrow if anyone care to know. Thanks again!