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high freq. noise problem

Posted: Thu Feb 09, 2012 12:40 am
by suttlemyre
Cheap laptop, cheap sound card, mike straight in the side. Have tried the noise reducer tool, dosent seem to work for me. What would be a quick fix with the equalizer tool, what freq. sould i turn down?

Re: high freq. noise problem

Posted: Thu Feb 09, 2012 12:44 am
by suttlemyre
heres a sample

Re: high freq. noise problem

Posted: Thu Feb 09, 2012 12:52 am
by kozikowski
It doesn't work like that. Channel noise is wide band. You'd be filtering out all the frequencies.

Your best bet is the Noise Reducer, although that's going to be an uphill fight.

Record five or six seconds of just noise. Sit quietly with the guitar in your lap. Then start playing. When you finish, Stop and select that first five seconds. Run Noise Reducer and Get Noise Profile.

Then select the whole show and run Noise Reducer again. This time OK using the default settings and see what happens.
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Noise Reduction is a juggling act of damage control and you're never going to get Hollywood Studio Sound, but you might be able to help.

That rain-in-the-trees noise is the worst to deal with.

I thought someone wrote a thing on how to do this.... Looking.

Koz

Re: high freq. noise problem

Posted: Thu Feb 09, 2012 12:53 am
by kozikowski
Dueling posts. I'll listen to your work. Koz

Re: high freq. noise problem

Posted: Thu Feb 09, 2012 1:03 am
by steve
Why does the noise level suddenly drop at about 30 seconds? That's going to make noise removal a lot more difficult and less effective - Noise Removal works best on low level constant background noise.

Re: high freq. noise problem

Posted: Thu Feb 09, 2012 1:10 am
by kozikowski
http://www.kozco.com/tech/audacity/clip ... roblem.wav

This is a version of what's going to happen. I picked :

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... and I got the noise sample from the trailing noise at the end of the song (noise-only)

There's other problems in there as well. You're too close to the microphone and you're popping your Ps, there's overloading and clipping. That's easy to fix. Back off.

Koz

Re: high freq. noise problem

Posted: Thu Feb 09, 2012 1:11 am
by kozikowski
We work best with the raw performance, not after you already messed with it.
Koz

Re: high freq. noise problem

Posted: Thu Feb 09, 2012 1:39 am
by suttlemyre
cool thanks for the help, i under stand now