Hey, guys!
The bass player recorded a track and it has very loud distinctive mid-range hum from the cable or pick ups- it some time is louder than the bass sound. I ignored it then because the bass player did not have another instrument and I wanted to have it done, but now- it sounds horrible- don't know what I was thinking. Is there any plugin that would treat it? I do not have any extras for Sonar X3, only effects that came with producer version and I have Komplete 9 Ultimate. But what do you use to get rid of such issue- the EQ? Thank you.

Generally the pro channel quadcurve EQ is perfect for this. Sweep from side to side until you find where it is loudest and then notch it out. Ta

I never used Pro Channel- is it EQ on every channel?

Video says a thousand words.. Cheers

https://www.youtube.com/w...e=youtube_gdata_player

Alex... your new sig is a trip, as usual....

:) ok I want to share this. At first I misread this as 'how to get rid of HUMan on bass guitar'.

Is the track still isolated and has a part in it where the hum is isolated from any notes being played?
 
Audacity has a noise removal tool (I have not used Audacity though) and is free. I have Adobe Audition (not free) which I *believe* is similar to Audacity in this capacity... basically can select and area of just background noise, and then process the entire clip to remove it. Depending on how isolated a hum is, using an EQ can be destructive to the rest of the signal.
 
Edit: Here is a tutorial on Audacity's Noise Removal tool.

A narrow notch will not make much difference esp once you've eq'd it for overall mix or even run it through a virtual amp. RF is likely to be in the mid to high end anyway. You may have to use 2 or 3 places to get rid of it entirely. Sampling noise can work but I had varied results with radio frequencies. The sampler method generally relies on sampling when bass is not playing, and to do this you may need to isolate parts of the noise with a band filter or something, and do it several times for each frequency giving issues. Whatever works for you in the end.

If you can isolate the fundamental & notch it out, try adding further notches at multiples of the fundamental, thereby notching out the harmonics

Agreed that a notch will probably not work well. It rarely does, unless the noise is pure sinusoidal 60/50Hz hum on a track without a lot of low frequencies in it.
 
What you need is a noise-removal tool such as the ones provided with the better audio editors. These work best if you have a section of audio that has just the noise in it, perhaps the lead-in before the bass part begins, or a rest where the bass briefly stops playing. From that the software generates a profile of the noise so it knows what to remove. 
 
Rather than go out and buy Sound Forge or something you could probably appeal to the forum for someone who has iZotope RX, Sound Forge or Audition to volunteer to fix it for you.
 
Other alternatives: re-track the part (best), or convert to MIDI and replace the track with samples (iffy).