thyname,
I had an awful analog cable connection which cleared up nicely after turning on my vcr. Something in the vcr unit really helped clarify the video signal. If i had any thoughts about buying a line conditioner years ago, that is likely what i would have been looking for.
I've read the odd similar report about sound clarification but coming from cable feeds as you describe. This seems to be rare. I would start by complaining to the service provider, not that they ever do much of anything and tend to blame the results on the x number of other electronics you have in your house or area.
