| T O P I C R E V I E W |
| mitxlet |
Posted - 07/26/2011 : 10:17:19 AM
Origin Ver. and Service Release (Select Help-->About Origin): OriginPro 8.5
Operating System: Windows 7
Hello to everyone!
I would like to obtain the Power Spectral Density from a set of data (X,Y). Is there a simple way to remove the DC Offset or do I have to create a new column "Y-mean(Y)" before doing the FFT.
Another question : Is there any FFT Tutorial ?
Thank you in advance !
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| 2 L A T E S T R E P L I E S (Newest First) |
| mitxlet |
Posted - 07/27/2011 : 05:25:09 AM
OK, thank you for your quick answer. I am going to try it right now !
Mitxlet |
| Penn |
Posted - 07/27/2011 : 02:40:08 AM
Hi,
The FFT tool does not provide the option for removing the DC offset. Of course, you can create a new column "Y-mean(Y)". However, you can also use the FFT filter to remove the DC offset. You can just use the high-pass filter, set the Cutoff Frequency to zero, and clear the Keep DC Offset check box.
Penn |
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