29 May
2006
29 May
'06
5:51 p.m.
garbage in, garbage out; sometimes it's a hard learned
lesson. if cutting 300hz and below is causing the loss
of hum and speech then it must be a real bad
recording. i've used the Rezound arbitrary fir filter
to remove air conditioner fans from the U.S. national
turkey and owl callers conferance. of course filtering
is filtering and...
ron
--- Alex Polite <notmyprivateemail(a)gmail.com> wrote:
Thanks for all the input.
I did some experimentation with jamin. Cutting of
everything below 300
Hz sure helped alot. But the harmonics went right
through the speech
spectrum so canceling them all out pretty much meant
canceling the
speech out as well.
I found freqtweak and hooked that up. It did
produce a very beautiful
spectrogram but it didn't solve my problem.
I need something smarter. Something that will 1)
take a few seconds
of audio when there's no speech (only hum) and treat
that as a
baseline. 2) Reduce the frequencies all over by that
baseline.
In effect analyzing the tool would look at the hum
and create a filter
that matches it exactly. I guess there's a word for
that?
alex
--
Alex Polite
http://flosspick.org - finding the right open source
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