Originally posted by spoll It's a Tosh 32A42A with a triple digital comb filter I believe, so yes to the S video cable?
If you use S-Video from your cable box to your TV then you are using the cable box's comb filter (instead of your TVs comb filter) for analog channels.
Think of things this way ...
A video signal consists of Luminance and Chroma. Analog cable channels / composite video 'combines' these into one signal. The comb filter is what then seperates these into distinct signals.
Digital cable / S-video carries Luminance and Chroma 'seperately'. No comb filter needed. The signals are never 'combined'.
So, if you have S-Video from your cable box to your TV ...
- For digital channels, the Luminance and Chroma signals are always 'seperate'. They are never 'combined'. This is good and should improve PQ.
- For analog channels, your cable box's comb filter will be used to seperate Luminance and Chroma. If your cable box has a crappy comb filter ... this could be bad and reduce PQ.
If you have composite from your cable box to your TV ...
- For digital channels, the Luminance and Chroma will be 'combined' into a single signal. They will then be 'seperated' by your TV's comb filter. This is bad and will probably reduce PQ.
- For analog channels, your cable box simply passes the signal out via composite. The TV's comb filter is then used to seperate Luminance and Chroma. If your TV has a good comb filter ... this could be good and improve PQ.
Bottom line ... test it out and see what you like. Most likely experience will be:
S-Video - good improvement on PQ for digital channels. Slight loss of PQ on analog channels.
Composite - fairly noticable loss of PQ for digital channels. Slight improvement on analog channels.
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