[Kst] Filter plugin...
arwalker at sumusltd.com
Fri Aug 6 02:44:26 CEST 2004
I think what you're after here are the Butterworth pass filter (high, low, band, and notch) plugins. I
don't believe they're accessibile from the commandline, but they are from the UI. You'll need to install
GSL before building Kst though.
On Thursday 05 August 2004 15:54, William Jones wrote:
> Version: 0.82 (using KDE 2.2.2)
Wow that's old. Time to upgrade your Kst. :)
> It would be really nice if there was a way to suppress low frequency noise
> (or signal, if one is so lucky) from a data vector. This would be very
> helpful for visualizing small signals riding on large low frequency noise
> fluctuations. When viewing PSDs of real data, this option would obviate the
> frequent autoscaling problem, in which the interesting part of the spectrum
> is dwarfed by the noise at low frequencies.
> A command line option to implement the "Low Frequency Interference"
> subtraction would be very convenient. The argument of the option could be
> the highpass edge in, say, units of the resolution element, or in Hz (if
> the sample rate is supplied as well). For instance, the command line of
> this sort
> kst -lfi 2 -r 200
> would specify the sample rate (200 Hz), and the highpass edge of the filter
> required to overcome the low frequency noise in the data (2 Hz).
Could this be done with a plugin? Recent Kst releases support plugins
written in C. You can't quite reference them from the commandline, but they
should be able to provide this functionality I think.
Share information about bargains, discounts and deals, visit:
More information about the Kst