forum.alglib.net http://forum.alglib.net/ |
|
FFTC1D problem http://forum.alglib.net/viewtopic.php?f=2&t=3811 |
Page 1 of 1 |
Author: | janpdk [ Sun Aug 06, 2017 8:24 am ] |
Post subject: | FFTC1D problem |
I have been using procedure FFTC1D and FFTC1DInv successfully to filter a series of samples in a Delphi program. In the same program I have created a second, analog procedure but this one gives problems: the outcome does not correspond to my expectations. Further investigations gives me hope: shifting the outputsignal half the total length of the series gives a result that corresponds to my expectations. Question: Is this normal behavior (and if so: when does this occur) or am I doing something wrong? Remark: I realize that when the signal is made continuous bij replicating the series the result may be considered as normal: the output will be replicated too. The environment: Windows 7, Delphi 7.0 |
Page 1 of 1 | All times are UTC |
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/ |