26 Aug
2005
26 Aug
'05
8:18 p.m.
On Fri, 2005-08-26 at 11:21 -0500, Jan Depner wrote:
On Fri, 2005-08-26 at 13:47, Mike Jewell wrote:
I'll try that.
Hi LAUs,
I'm pretty new to all this but have been using Audacity with plugins,
etc and have recently been experimenting with Ardour and Jamin.
What I want to do is EQ the "quiet" parts only of a wav file. The file
is a tape recording of some source (probably LP) done on a cheap
recorder. There is lots of rumble that is mostly noticeable (of course)
in the quieter spots on the track. Playing with Jamin's 30 band EQ
shows that filtering out a band or two around 200 Hz helps a LOT but
this wrecks the bass in the louder "musical" sections.
You can use scenes in JAMin to do what you want. Unfortunately that
means that you would have to switch scenes manually. I don't know of
any "automatic" way to do what you want to do unless you can figure out
how to get Ardour to pass the OSC scene change commands to JAMin. That
would still require that you decide where the scenes would be used in
the musical selection. To set up the scenes just set the EQ the way you
want it then right click on one of the scene buttons and select "set".
Set one up with the notch and one without. To switch between them
simply click on the scene button of choice. You might be better off
using the parametric controls on the hand-drawn EQ instead of the 30
band EQ since you can set up a notch and slide it to get the proper
frequency to cut. Another possibility it to try using Gnome Wave
Cleaner (GWC), sample some of the rumble in a silent section, and then
use that as the "noise sample" to be removed. I haven't tried that with
rumble but it helps a bit with hiss/scratchiness.
I did try that with gwc but didn't have much luck. But I didn't have
time to play with all the different "settings". I'm especially
interested in the "max and min frequencies to use in the noise sample"
setting. There are lots of other ones and I haven't found any
documentation yet that explains most of them. It seems like potentially
a REALLY useful tool though it's UI could use a little work (Un-do is
nice but Re-do is almost as necessary.)