Originally Posted by bfdtv
Originally Posted by Health Nut
DD True HD uses MLP as the lossless portion of the track. My understadning is that Dolby includes a legacy DD track in addition to a lossless track that uses MLP. (While DTS uses a core + lossless extensions).
On HD-DVD, TrueHD is a standalone/separate track, just as you saw with DVD Audio on DVD. On Blu-ray, TrueHD is implemented as an extension track that also includes a legacy DD track.
Originally Posted by bobgpsr
He can run an optical cable for a S/PDIF connection. For the advanced DD+ & Dolby TrueHD codecs his AVR won't do the original decode. The player will re-encode to high bitrate (1.5 mbps) dts and send that over optical to his AVR. Should sound just fine -- just not all the uber potential of an linear PCM HDMI connection.
Perhaps you folks can clear up some confusion I'm having regarding determining the bit rate of content passing through the S/PDIF connection.
Suppose we have an HD DVD disc with DD+ or TrueHD on it. According to Bob (and I hope he is correct) it would be re-encoded to 1.5 mbps dts. If this is the case, even if it is passed through the S/PDIF connection, assuming the mixing wasn't injured by the mixer (no insult intended Marc,
it should always sound much superior to the standard DVD mix, because the bit rate would be 3.3 times the 448 kbps bit rate of the standard DD release.
However, Health Nut and bfdtv seem to be saying that a disc with DD+ or TrueHD would also have a legacy DD track. Now a standalone legacy DD track shouldn't have a bit rate higher than 640 kbps, and it could be a lot lower.
So my question is when using the S/PDIF connection on the Toshiba, is it grabbing the legacy track at the much lower bit rate and sending it as dts to the receiver/processor, or is it grabbing the advanced codecs with the higher bit rates and sending the re-encoded track at 1.5 mbps dts?