Hi, I am trying to apply the filter and I have the values for the low(adsbygoogle = window.adsbygoogle || []).push({});

pass filter and the working out, but the thing is I had a bit of help

with it so I don't quite understand the circular diagram here:

http://i36.photobucket.com/albums/e18/ocundale/untitled.gif [Broken]

(you will need to make the image full size to see it properly)

The thing is I need to find values for the high pass filter now and I no longer have the help of my friend, so I was wondering whether anyone could help me out with understanding the circle complex theory of it, as I

don't fully understand it and I need to get the values to plug into

Matlab.

I have trawled the net for information, but none of it has really

helped me in understanding it. What I understand is in the image, but

I don't know how to do the high pass filter, I just know that I can't

do it the same way as I worked out values for the LPF.

Thanks for your time!

Oli

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# Care to help? Complex mathematical problem

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