How to decrease the background noise?

["bluemagpie2003" <>]

Well, this is my problem....

I use the sennheiser ME67 and maranz PMD690.
Every sound recorded had two kinds of noise.
One is the noise of unspecific frequency which
I'll decrese it with "hiss reduction" in adobe audition.
The other is the noise of <2kHz which I'll use the
filter to decrease it.
Though in a very quiet environment, they seems to
exit(especially the lower frequency).
Actually I don't like to manage the original sound
too much, that sometime change the target sound.
Is there any good way to solve the problem?
or sould I check anything?

Thank you!

Julie
Beginner of Nature-recordist
-----------------------
The nature, the best.



________________________________________________________________________
________________________________________________________________________