Home Video Asylum

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Re: comb filter

203.134.81.26

Firstly, all but the earliest Comb filters are digital. They split the Black and White information from the Color sub- carrier information to produce an S- Video signal.

2 Line or 2D Comb filtering compares 2 lines in an adjacent field, 3D or 3 line Comb filters compare lines from the next field with additional delay. Each has advantages and disadvantages depending on the picture content.

Some adaptive comb filters are better than others- 3 line comb filters shouldbe capable of better resolution but may produce unwanted artifacts.

I hope this helps-


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