How to remove backgroud voices  from the recoring of speach to the camera?

I have a very frustrating situation, and I really do not know how to go about solving the problem, as my knowledge of soundtrack is limited. I have a recording of a fair event, during which there are short interviews of few people to the camera. Unfortunately the sound of the person who is talking to the camera is spoiled by the sound of the general people voice noise, which is in the background (the sound that you get during big public events in the enclosed space). I need to achieve a clear sound (as much as it is possible) of the person who is talking to the camera and then mix it with some other audio (music track). I have tried using EQ but it didn’t help that much, I am guessing because the noise in the background is people talking which maybe has the same frequency as the person who is talking to the camera.
I have spent hours on this and still cant fix it, but I have a feeling that it must be quite simple to do? I am not quite sure how to use the noise reduction function in soundtrack and if that would be the way to go about it?
Could someone please help me???
Thank you for your time in advance I appreciate your advice.
Karolina

jim0651 wrote:
try finding a spot where only the background voices are heard. You can then use that as your noise print noting the decibel level of its peak. You then apply a noise reduction to the whole track setting the noise reduction as the peak level of the background voices.
I don't like to disagree with people who are trying to be helpful, but I wouldn't have much hope in this working. It is designed to remove broadband noise that can be separated out from the sound you want to retain. In your scenario there isn't enough separation between the background and the main voice to not kill the patient with the operation.
Nevertheless if you want to try it, here are the instructions.
Open the file in the Audio Editor.
Select an area of the file that only has background talking, where there is no main speaker present.
Make the menu selection *Process>Noise Reduction>Set Noise Print*
Now select the whole file
Make the menu selection *Process>Noise Reduction>Reduce Noise* - that will bring up this plug-in control. Adjust the parameters, click the play button and see if it helps. The threshold and amount will have the most effect, the tone control may help. It may help to listen only to what is being removed by checking the Noise Only box. If you get something you like, then click the Apply Button.
!http://rdiv.com/screenshots/STP_ReduceNoise.jpg!
Even though you can undo this you should make a backup before you change your files.

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