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[Discuss-gnuradio] gr-atsc progress


From: Charles Swiger
Subject: [Discuss-gnuradio] gr-atsc progress
Date: Wed, 25 Apr 2007 11:02:13 -0400

The 2.x gr-atsc seems to be closer to working, at least the flow control
(forecast,consume,etc) creates the exact to-the-byte correct quantity of
output with no loss of sync (since it keys on easy to discern -5/+5), on
120MB size output files.

However the *quality* of the output is only about 65 percent correct,
which is not suprising if you compare the output of a working (0.9)
equalizer:

http://musicriver.homeunix.com:8737/eq-out_working.jpg

to a non-working all 2.x equalizer:

http://musicriver.homeunix.com:8737/eq-out_non-working.jpg


Any hints or wild guesses from the atsc experts on where to look? It
must be something with the bit_timing_loop or the equalizer but it is
largely just copied from the 0.9 stuff.

--Chuck







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