How to remove DC offset (trend) from an array?

[hbin]

Dear all,

How to remove DC offset(trend) from an array? I searched the forum, but still not very clear. Someone suggests using detrend.vi, but I don't know where this vi is.

Anyone has examples of Labview 7.1 or lower?

Thank you very much!

[antea06]

Hi,

what about "linear fit.vi"? you could calculate the linear fit curve of your signal and then subtract the result from the signal itsself...

Regards

[unclebump]

From the block diagram, try All functions, Analyze, Signal processing, Time domain, AC & DC Estimator. This vi will give you the DC estimate. Subtract this value from the original array.

Message Edited by unclebump on 04-04-2006 10:34 AM