On Fri, Sep 28, 2012 at 03:27:39PM +0200, Florian Paul Schmidt wrote:
I agree with the above. I'll just add that it depends also a great deal
on what else is in the recording. Perhaps masking or compressing the
triangle wouldn't impede that much on other instruments, depending what
they are: if you've got a fiddle, you're pretty much out of luck.
Anyway, as to your main question, there are plenty of tools, if only you
can identify the frequency: multiband compression and parallel procesing
both come to mind.