noise reduction -Sound Forge - PC - MAGIX Community Forums Archive

Subject:noise reduction Posted by: joejon Date:5/13/2006 3:00:22 PM I've used Noise Reduction (1.0) several times over the past 3 years, but I never really understood it much. Is there any tutorial anywhere that anyone knows about? The follow are my usual settings: Mode - 3 ( I read that this was the least destructive for the overall sound). Reduce noise by - 10.0 and I do this 1-4 times depending on how much noise there is. I read that doing multiple NR at lower levels produces a better result. Is 10.0 good or should I do lower. I did find that when I do as many as 4 or 5 passes, the sound that I do want to keep seems affected by that many passes and gets kind of muddy. I do mainly middle and high school band music and jazz. There is a lot of surrounding noise at these concerts. Noise bias - Is set at 0.0 and I don't understand this so I leave it at that. I don't know what would be better to use, Average or Peak. Attack Speed default is 90, so I leave it at that. Release Speed default is 50, which I leave at. Windowing FFT size is 1024 at the default. Windowing Overlap is defaulted at 67. I leave the High-shelf start frequence box unchecked. I know very little about all of these settings. I've played around with them some, but it's very difficult to tell the difference and if I change one I don't know if something else should be changed. Any information about this is appreciated. Thanks
Subject:RE: noise reduction Reply by: rraud Date:5/13/2006 6:06:50 PM The key to making NR work is a good noise print. ie: a pause between songs containing HVAC, tape hiss or other din type noise. NR-2 cannot remove coughs or other transient artifacs and cannot make a bad performace or song sound good. Niether can a pro engineer in a $1,000,000 studio for that matter.
Subject:RE: noise reduction Reply by: MJhig Date:5/14/2006 8:54:48 AM Apparently, he doesn't even have NR-2, from what I get, he still has NR-1. That aside, NR* will not work miracles. The noise must be continuous and in a constant frequency such as hum & hiss etc. I have no clue as to how NR-1 performs as I've had NR-2 for quite some time now and works very well when not attempting "to go crazy" pushing the boundaries. Edit; The best advice would probably be to visit the NR page and go through the tutorials as a starter then make subtle adjustments. I don't have a "yardstick" for NR-1, don't even know if it has the Envelope page but several passes with small -dB reduction taking a new noise-print after each pass is good advice. MJ Message last edited on5/14/2006 9:07:34 AM byMJhig.
Subject:RE: noise reduction Reply by: Illogical Date:5/16/2006 6:14:02 PM So NR does nothing on crackles or pops then?
Subject:RE: noise reduction Reply by: Chienworks Date:5/16/2006 8:41:47 PM Nope. But SONY's click & crackle reduction filter should help them a lot. I've used it on a recording from a vinyl LP that had a radial scratch across the whole face of the record. There was a nasty pop followed by slight crackle twice each revolution. The click & crackle filter eliminated enough of it to make it completely unnoticeable.
Subject:RE: noise reduction Reply by: Illogical Date:5/17/2006 8:23:03 AM Huh, cheers for the info, I'll give that a go.

Subject:noise reduction

Posted by: joejon

Date:5/13/2006 3:00:22 PM

I've used Noise Reduction (1.0) several times over the past 3 years, but I never really understood it much. Is there any tutorial anywhere that anyone knows about? The follow are my usual settings:
Mode - 3 ( I read that this was the least destructive for the overall sound).
Reduce noise by - 10.0 and I do this 1-4 times depending on how much noise there is. I read that doing multiple NR at lower levels produces a better result. Is 10.0 good or should I do lower. I did find that when I do as many as 4 or 5 passes, the sound that I do want to keep seems affected by that many passes and gets kind of muddy. I do mainly middle and high school band music and jazz. There is a lot of surrounding noise at these concerts.
Noise bias - Is set at 0.0 and I don't understand this so I leave it at that.
I don't know what would be better to use, Average or Peak.
Attack Speed default is 90, so I leave it at that.
Release Speed default is 50, which I leave at.
Windowing FFT size is 1024 at the default.
Windowing Overlap is defaulted at 67.
I leave the High-shelf start frequence box unchecked.
I know very little about all of these settings. I've played around with them some, but it's very difficult to tell the difference and if I change one I don't know if something else should be changed. Any information about this is appreciated. Thanks