Time Domain Signal Filters - Can anyone please help?

[molderon]

http://forums.ni.com/attachments/ni/170/225584/1/10.txt

[Nann]

Sorry, I don't have 7.1 in my machine. So I cannot save it to 7.1.  You can create the VI yourself with the screenshot as a refernece.  The key point is that you should have the LabVIEW Advanced Signal Processing Toolkit 7.5.  Those VIs I used are from the toolkit.

[molder]

I see..

We are on a univ. budget here.. hance will be difficult to buy it..

What the algorithm? I might try to implemet it with the LV express Vis in v7.1?

If its too much to ask for, I will understand

A big thanks for the help so far

[Nann]

The algorithm is implemented in these steps:

1. Apply the discrete wavelet transform to the input signal.
2. Set the approximation coefficients to 0.
3. Reconstruct the signal based on all the detail coefficients

If you can implement the discrete wavelet transform by yourself, it is not that difficult to implement the detrend function.

[molder]

Hi Nann..

Couldnt make it.. I still have the drift.. I used a Moving average triangular filter , and still got the drift, hence cannot get the peaks correctly

Can you help?

Amir

[Jaspal]

Hi Amir,

I too dont have the ASPT and want to remove baseline wandering.

Have u been successful at that? Any guidance?