Unmixing FM Static

I have a weak radio station - low power college radio station 45 miles away - that tends to get static. When I record off of the radio, I often have FM static. Any tips on how to unmix the static? I’ve tried:

  1. unmix song
  2. unmix crowd noise
  3. unmix drums
  4. unmix noisy speech

but nothing really gets the static clearly. I often will do multiple passes and find a layer that has the most static, then get a noise print and remove it from the worst layer.

Any tips would be appreciated.

Hi,

could you upload a short example? mp3 might be fine.

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FM usually is of a white noise variety, I’m not surprised that noise printing is effective, but the problem is, this can be different each time, depending on the conditions.

Perhaps stating the obvious, but have you considered using a better antenna? I can receive FM stations hundreds of miles away with just a DIY wire dipole in the attic, but of course I don’t know the terrain you’re dealing with.


here is a sample

I have tried a bunch of antennas, including dipole, I think there’s another station to the south that is causing interference.

I tried DeNoise spontaneous.

than again DeNoise and it’s “ok”, imho. Not perfect. Just some minutes work, that’s fine.

finally normalize (with Audacity to -1 dB)

Beautiful song.
It can be done better, I am sure.
Interesting

Some more steps.
Subtract the new version from the original (to get the noise).
Than DeNoise again and just keep the lower part below 1,2 kHz.
Add this to the new version.

Another way might be Unmix Layers (here -58.7 dB on the original) and play with that layer.

Than use Unmix Song and DeNoise for some of the sublayers.

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Thanks, I will try those steps.

What I have done is to “Unmix song” then find the layers with the most static and do the noise print and remove it that way.