fft_internal_filters {fftab} | R Documentation |
Remove DC Component and Symmetric Frequencies
Description
Internal functions to manipulate and filter Fourier coefficients in fftab
objects.
Usage
.remove_dc(x)
.remove_symmetric(x)
.split_symmetric(x)
Arguments
x |
A |
Details
-
.remove_dc()
: Filters out rows where all.dim_*
columns have a value of0
. -
.remove_symmetric()
:For real-valued signals, it filters out redundant, complex-conjugate frequencies.
For complex-valued signals, no filtering is applied as symmetry isn't relevant.
-
.split_symmetric()
: Splits the coefficients into symmetric and asymmetric parts.
Value
A fftab
object with filtered coefficients.
See Also
[Package fftab version 0.1.0 Index]