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digital filter for composite video

Question asked by Johannes on Dec 8, 2011
Latest reply on Dec 8, 2011 by mattp

Hi all,

 

I have a PAL analog baseband video signal (composite video) which carries single-frequency noise.

The noise frequency is 187.1(1) kHz.

 

My collegue has done wonders in shielding the camera, but there remains this noise which cannot be removed by further shielding.

The noise is still visible on the screen, a moving pattern of brighter-than-the rest stripes.

 

So I have to remove it from the composite video signal. I want to implement a digital Gaussian filter.

 

comp. video + noise -----> digital filter ----> comp. video

 

I thought of using one of the ADI DSPs to do this, but I don't know which.

 

Do you think I can prototype such a filter with one of the evaluation kits?

Which one?

 

Thanks and greets,

J

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