Using noise reduction to reduce hum in beta

andrewzy · Post by **andrewzy** » Thu Apr 21, 2011 4:13 pm

I'm trying to get to grips with the sound reduction filter in the beta, which obviously has more functions than the simpler version in release 1.2.6

I need to use sound reduction to remove a low hum that my USB headphones generate. This was very straightforward in 1.2.6: I just moved the slider to the far left and the hum was completely removed. Hurrah!

I expect it's possible to do this easily in the Beta but can't figure out how to do it having tried various combinations of slider position for the different sliders now available.

I'd be very grateful if someone could let me know how to do this.

Andrew (in hot and sunny Newbury, England)

Post by **steve** » Thu Apr 21, 2011 5:00 pm

The manual has most of the information http://manual.audacityteam.org/man/Noise_Removal

It does not yet say anything about the new "Sensitivity" slider (this feature is very new).
Normally you would leave the Sensitivity slider at zero, but after you have tweaked the other controls for best results, you may want to try pushing up the Sensitivity slider a bit to see if it makes any improvement.

andrewzy · Post by **andrewzy** » Thu Apr 21, 2011 5:22 pm

That's great Steve, thanks very much for responding so quickly!

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Using noise reduction to reduce hum in beta

Using noise reduction to reduce hum in beta

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Re: Using noise reduction to reduce hum in beta