Displaying 1 result from an estimated 1 matches for "scaleselectionproblem".
2013 Apr 19
1
How to select the scale parameter for Gabor transform (Rwave)?
...irements above.
To make sure sigma=200 works in practice, I computed the Gabor transform of
two sinusoids separated by 0.04 Hz plus two spikes separated by 30 points
using the code below. I obtained an excellent frequency resolution but a
disastrous temporal resolution
http://sccn.ucsd.edu/~rapela/scaleSelectionProblem/gtResultSigma200.jpg. To
obtain decent frequency and temporal resolutions I used sigma=10
http://sccn.ucsd.edu/~rapela/scaleSelectionProblem/gtResultSigma10.jpg.
fromTime <- 0
toTime <- 250
by <- 1
ts <- seq(from=fromTime, to=toTime)
f1 <- 0.01
f2 <- 0.05...