remove scratching noise from mic -Sound Forge - PC

Subject:remove scratching noise from mic Posted by: vlc Date:11/16/2007 12:05:42 PM I have an audio message that I need to edit. Most of it is good, but the last 5 minutes is bad because the headset mic got dislocated and started scraping on the speakers face. Is there a way to determine the frequency of the scraping and try and remove only that 'pitch'?
Subject:RE: remove scratching noise from mic Reply by: WavetableMaker Date:11/16/2007 1:12:44 PM You have yourself a real challenge there - this kind of noise is usually broad-band (spread out across the spectrum) so separating it on a simple frequency basis may be near impossible. Better off to try the Noise Reduction plug-in if you have it. (Under the Tools menu in SF9.) WtM
Subject:RE: remove scratching noise from mic Reply by: vlc Date:11/16/2007 1:45:10 PM I do have the noise reduction plug-in, but have never used it before. Any tips on how I would use it for this problem?
Subject:RE: remove scratching noise from mic Reply by: Chienworks Date:11/16/2007 8:23:41 PM I don't think noise reduction will do any good with this either. It's only good for mostly constant sounds, like a ventilator fan. It can't work on transients and sounds without repeating patterns.
Subject:RE: remove scratching noise from mic Reply by: jumbuk Date:11/19/2007 2:46:58 PM This will be difficult. My first try would be to see what can be removed from the "silence" between phrases. You could try a noise gate or downwards expander to do this. If it is only a few seconds, you could manually zero the spaces (or replace them with some low-level background noise so it's not too obvious what you have done). I would still try the noise reduction plug-in, although it may not work if the noise is intermittent. You can use a sample of noise where there is no speech to get a noise print for it to work with. You might try the crackle remover as well, as it is geared towards this kind of intermittent noise. I would set up a chain of plug-ins, including parametric EQ, noise gate and a graphic compressor, so you can try everything. Sometimes the combination of a little bit here, a little bit there will produce an acceptable result. Also, make sure to give yourself some time away from the recording after you have worked on it a while. Sometimes it sounds different when you come back with fresh ears.

Subject:remove scratching noise from mic

Posted by: vlc

Date:11/16/2007 12:05:42 PM

I have an audio message that I need to edit. Most of it is good, but the last 5 minutes is bad because the headset mic got dislocated and started scraping on the speakers face. Is there a way to determine the frequency of the scraping and try and remove only that 'pitch'?

Subject:RE: remove scratching noise from mic

Reply by: WavetableMaker

Date:11/16/2007 1:12:44 PM

You have yourself a real challenge there - this kind of noise is usually broad-band (spread out across the spectrum) so separating it on a simple frequency basis may be near impossible.

Better off to try the Noise Reduction plug-in if you have it. (Under the Tools menu in SF9.)

WtM

Subject:RE: remove scratching noise from mic

Reply by: vlc

Date:11/16/2007 1:45:10 PM

I do have the noise reduction plug-in, but have never used it before. Any tips on how I would use it for this problem?

Subject:RE: remove scratching noise from mic

Reply by: Chienworks

Date:11/16/2007 8:23:41 PM

I don't think noise reduction will do any good with this either. It's only good for mostly constant sounds, like a ventilator fan. It can't work on transients and sounds without repeating patterns.

Subject:RE: remove scratching noise from mic

Reply by: jumbuk

Date:11/19/2007 2:46:58 PM

This will be difficult. My first try would be to see what can be removed from the "silence" between phrases. You could try a noise gate or downwards expander to do this. If it is only a few seconds, you could manually zero the spaces (or replace them with some low-level background noise so it's not too obvious what you have done).

I would still try the noise reduction plug-in, although it may not work if the noise is intermittent. You can use a sample of noise where there is no speech to get a noise print for it to work with.

You might try the crackle remover as well, as it is geared towards this kind of intermittent noise.

I would set up a chain of plug-ins, including parametric EQ, noise gate and a graphic compressor, so you can try everything. Sometimes the combination of a little bit here, a little bit there will produce an acceptable result.

Also, make sure to give yourself some time away from the recording after you have worked on it a while. Sometimes it sounds different when you come back with fresh ears.