Atsuko
Sanderxpander, maybe Melodyne can do the job but, as I stated above, for long files it gets too much of the machine making it almost impossible to work.  Could you give me a more detailed explanation how to do the phase thing? Thanks!

As I said, Melodyne is entirely the wrong tool for the job. It does pitch and timing corrections mainly, it wasn't made for speech at all unless you were planning on slowing down or speeding up certain words, or raising or lowering the pitch of the voice.

The phase thing really depends on the kind of noise, basically you try to find a long bit of static noise (like, no pops or crackles, but hum or white noise). Copy it to a second track and flip the phase using the phase button on the console strip. Now listen and see if it cancels out the noise. If it does, try it under different parts of the thing. If it's static enough, you may get a significant improvement. If you do you can try copying it under different parts, but you'll have to pay attention that the noise/hum part of the waveform lines up. I've gotten rid of some hum using this in the past, but honestly, if you have no idea what I'm talking about or don't know how to go about it, it's not really worth it because it's a pretty finicky process and the results may be disappointing.

dubdisciple,
 
as I still don't have practice with Melodyne I got stuck on remembering the right commands to call the functions, navegability, etc., but the fact that it detected the frequencies made me think that it's possible to use this resource to make the cleaning, but I gave up because of the size of the files I have to work, if they were 3 minutes' files, I think I'd go for it.
 
Later, I'll try to learn how to use R-Mix.
 
Thanks for the help!

We are all here to help each other.  I have received plenty of help on here.  It may help if you post a tiny segment of exactly what you are dealing with. I understand privacy and copyright issues, but perhaps enough to not violate either.  Just a sentence or so.  If that is impractical, I understand.  The phase trick described by another poster is often used by remixers to obtain acapellas from songs.  Worth a try and you know right away if it worked.

Sanderxpander,
 
I understand that Melodyne isn't the preferable tool for this job but I was impressed how it could separate the frequencies giving us the possibility to select just the range you want to deactivate or, even, delete the blobs we don't want.  And there's the venetian function, which seems to me a nice and easy tool also...
 
Let me know if I'm wrong. I'd have to catch periods of noises from an hour file and copy/paste to the entire second track and flip the phase to unmatch the peaks and valleys of the sound for them to be cancelled. I'm gonna try and error, later.
 
Thanks a lot!

dubdisciple, 
 
thank you very much!!  I'm at work now, I'll do it later when I get home.
 
Thanks again, this forum is awesome!

Atsuko, yeah you got the right idea with the phase thing. It's worth a try at least. You'll know if it does something within a few minutes.

There are also a few free VSTs though I have no idea how good they are, such as this one.
http://www.synthtopia.com...-software-for-windows/

And Audacity has noise removal of course.
Alternatively, there are noise reduction plugs for any budget really. Voxengo makes one for just 100 bucks. And plugindiscounts.com offers RX3 for 230 only. And a Waves plugin specifically for dialog tracks for 170.

Depending on how recurring this kind of job is and what (if anything) you can bill the client it might be worth getting a specialized tool.

Sanderxpander
Atsuko, yeah you got the right idea with the phase thing. It's worth a try at least. You'll know if it does something within a few minutes.

There are also a few free VSTs though I have no idea how good they are, such as this one.
http://www.synthtopia.com...-software-for-windows/

And Audacity has noise removal of course.
Alternatively, there are noise reduction plugs for any budget really. Voxengo makes one for just 100 bucks. And plugindiscounts.com offers RX3 for 230 only. And a Waves plugin specifically for dialog tracks for 170.

Depending on how recurring this kind of job is and what (if anything) you can bill the client it might be worth getting a specialized tool.

Now that is a thought. You may be able to for a fee subscribe to adobe for a month (of for however long it's needed), use the software (Audacity) to do the work and be done at a minimum expense.  I also completely agree that if this a recurring job or even a new skill set that you can now offer as a service.... A dedicated tool will pay for itself in a short time. Good Luck..

Why would you subscribe to Adobe exactly?

Sanderxpander
Why would you subscribe to Adobe exactly?

To use audacity from their cloud service as opposed to paying full price for the program.  I believe that you can subscribe to the cloud for full access to Adobe's programs for a given period of time and then you are done.

Ahhh you may be thinking of Audition which is Adobe software? Audacity is a free open source DAW with some built in noise reduction functions.
Here;
http://audacity.sourceforge.net/