[BC] For the TV guys for Cowboy
Ira Wilner
bdcst at vermontel.net
Fri Jul 11 11:47:48 CDT 2014
I thought it was the bits per Hz that counted most. If you assume the same
data rate, but just a smaller number of bits for a smaller picture, then
both streams will suffer from the same SNR for the symbols being
transmitted. If the symbol rate is different, there will be a reception
noise floor difference. I assume all of the DTV data is transmitted as one
stream that is subdivided among each video program feed according to video
format requirements and amount of compression for each program. A more
highly compressed feed would be more susceptible to unmaskable errors as
well as more artifacting in general but the symbol rate per carrier Hz would
be reduced for all of the programming that share the digital carrier thus
increasing the SNR in the RF domain.
--Ira
From: jimsnell*aol.com.INVALID
WOIO RF Channel is 10.
19.1 is 1080 I
19.2 is 480 I
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