I tried the Fox news channel last night for a few minutes. They had coverage of the night club fire going. With Prologic engaged I didn't notice anything, except that it appeared to be an primarily mono broadcast. If I walked back and stuck my ear right on the speaker I could hear a quiet gurgle/chirp sort of sound, but there's no way I could ever hear that over the dialog. Is this what you're hearing? Id so, I'd bet it's some sort of compression artifact, made more obvious from the PL decoder interacting with the audio codec.
EDIT: [spelling]
[This message has been edited by charlie (edited February 23, 2003).]
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Charlie