Bug 126641

Summary:	Should be able to calculate white noise limit
Product:	[Applications] kst	Reporter:	Andrew Walker <arwalker>
Component:	general	Assignee:	Duncan Hanson <duncan.hanson>
Status:	RESOLVED DUPLICATE
Severity:	wishlist
Priority:	NOR
Version:	1.x
Target Milestone:	---
Platform:	Compiled Sources
OS:	Linux
Latest Commit:		Version Fixed In:

Description Andrew Walker 2006-05-02 23:12:29 UTC

Version:           HEAD (using KDE KDE 3.5.0)
Installed from:    Compiled From Sources
OS:                Linux

An LFI requirement reads:

"It shall be possible to calculate the white noise limit from an input scientific data stream (where the input data will allow such estimation. For example it is expected that for LFI data this will be possible only for data in differenced mode)"

Comment 1 Duncan Hanson 2006-05-26 20:55:55 UTC

The LFI team would also like to calculate the knee frequency of a power spectrum.

I would like to implement this as a fitting plugin. The plugin will operate on a power spectrum, fitting for the 1/(f^a) noise and the white noise limit at high frequencies. The options will be something like..

- # of points to fit 1/f noise (or a maximum 1/f noise frequency).
- # of points to fit white noise (or a minimum white noise frequency).

It will produce scalars for the knee frequency, the white noise limit, and the fit parameter a.

It will produce a plot with the original power spectrum, a fit curve which shows the intersection of the white noise limit with the 1/f noise, and labels containing the values of the calculated scalars.

Does this sound good?

Comment 2 Andrew Walker 2006-06-01 01:50:46 UTC

Sounds good, but this should be against bug report 115451 and not this one.

Comment 3 Duncan Hanson 2007-02-07 00:10:25 UTC


*** This bug has been marked as a duplicate of 115451 ***