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ok well i got this sample that has a litle humm in the back ground woundering if there any technic's to clean that up???? in the proceing window ??
im using cubase sl 2

Hmm, well I know in adobe audition a way of doing that.

Hightlight an area with just the humming noise, then effects > noise reduction > noise reduction, then select "get profile from selection". click close, dont apply the effect yet.

After that, select the entire file, then go back to the noise reduction, and then you apply the effect. sometimes it works alright, i find if you chuck a bit of reverb on the sample it helps too

you could also sweep around some eq and try to cut it that way

or with a reversed band pass filter like grm tools

often hum can be removed with a parametric eq, where this is the case its better than noise reduction.

Set Q (bandwidth) very narrow and cut as much as needed. Probably around 50Hz - 150Hz if its 'mains hum'.

Sweep about with a medium Q boost, then narrow and cut it as you focus in.

If you don't need the bottom end at all, say if its just the hi-hats want, you could just high pass the lot.

Eq, noise reduction all good advice.... but have you checked DC offset? Sound Forge has a DC offset removal function.... as do most other wave editors.

if the hum is on a different frequency to the sound ya wanna keep, you can cut it out using a spectral viewer, like adobe audition has. that way you can completely cut it out without messing with your orignal samples EQ. ^^the hiss reduction is good aswell, but tends to take some highs from the sample too.

^^^ what they said.

But also, you could try a gate, if the hum is only really a problem when the rest of the sample is quiet.

I try to avoid too much noise reduction and sometimes EQing doesn't quite do what you need - a noise gate is pretty good in those cases...

werd