Pale Blue Ego Wrote: > Also: > minuses: > What good is it to send surround audio without the accompanying VIDEO!?
Hey yeah! It seems the concept of Dolby Digital Live came from PC gamers who said "why can't it all be Dolby Digital?!?" Not to run down gamers as I'm sure there are a few here but HT people know better - in order to get sound into DD, you have to get the 2-channel sound into 5-channel sound. The industry-leading way to do this on existing 2-channel material is good old Dolby Pro-Logic II, and Dolby is surely using such an algorithm in Dolby Digital Live. So the question becomes - have the receiver do the work of decoding 2-channel into 5-channel using PLII or having the Dolby Digital Live encoder do the same work using the same algorithm and passing the result on to the receiver, which merely decodes the DD stream into 6 PCM channels. I know I'd rather trust this work to a receiver with a well-proven DSP from the likes of Analog Devices, Cirrus Logic or Texas Instruments than one doing much more strenuous work (decoding into 5-channel then re-encoding in DD) from C-Media accompanied by a driver. This decoding 2-channel into 5-channel then encoding in DD generally isn't done with a DVD. Most of these soundtracks are made from scratch in a sound studio, so each channel is truly independent. But since the original source is 2-channel, with Dolby Digital Live you will not get the dynamic range nor will you get the channel separation since the decoding into 5-channel is probably done by the PLII algorithm. You will get a pretty "Dolby Digital" light on your receiver, for what that's worth, you just won't get any of its sonic benefits. -- Mark Lanctot ------------------------------------------------------------------------ Mark Lanctot's Profile: http://forums.slimdevices.com/member.php?userid=2071 View this thread: http://forums.slimdevices.com/showthread.php?t=24332 _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/discuss
