29 May
2006
29 May
'06
2:23 p.m.
On Monday 29 May 2006 11:16, Alex Polite 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?
Yes, I think it's gnomewavecleaner (http://gwc.sourceforge.net/).
Seriously, though, it sounds like you want a
de-hiss/hum/noise/snap/crackle/pop (okay maybe not so serious) utility which
would take a lot of the manual labour out of it. I don't think there's any
magic solution, but maybe GWC would help. There's others as well (e.g.
http://home.snafu.de/wahlm/dl8hbs/declick.html -- kind of old and sketchy but
easy to use).
HTH,
Curtis S.