[BC] DTV Audio Levels

[padrino at telos-systems.com]

Group,

Even if the processing requires a few milliseconds to do its job, we can
re-sync the audio and video later.

-Frank Foti

 >I don't think it would take more than a few milliseconds to process the
 >audio. There shouldn't be an resynchronization problems because
 >synchronized audio was delivered with the video. Synchronization problems
 >come into play when one has multiple paths for both the video and the
 >audio. The TV station already has synchronized audio available from the
 >network. Extracting digital audio from the composite signal is a trivial
 >operation, with the maximum latency determined by the dictionary length
 >in the compression. This is all "realtime" as far as audio is concerned,
 >consuming a few tens of audio frequency cycles, maximum. Actual signal
 >processing is instantaneous when related to slow varying information like
 >audio.
 >
 >Cheers,
 >Richard B. Johnson