How to remove digicam audio hiss?

I've decided to put in some of the 640X480 30fp movies I took on my canon IXUS700 into iMovie
Resolution is fine but audio hiss at the high end is really bad
What settings can I use to remove it?
Tried using audio noise remover but doesn't seem to apply to all clips? not sure how to use it...
Any tips welcome
Thanks
Jason

Hi Jason
In iMovie HD 6 there is some rudimentary sound tools. You might try the
equalizer and take down the high frequencies.
alt. 1 (but costly)
a. Extract sound
b. export this sound clip as .aiff
c. buy SoundSoap™ and run it
d. import back and match this new sound + silece out the old soundfile.
alt. 2 (may be even more costly)
a. get FinalCutExpress HD 3.5. The soundtools here are near to professional.
Yours Bengt W

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