Rack Attack V: Toshiba Surround Tricks
The last blog detailed the Pioneer BDP-HD1 Blu-ray player's surround properties. What about the Toshiba HD-A2? Dolby's Craig Eggers kindly explained that the player does feature both lossless Dolby TrueHD and lossy Dolby Digital Plus decoding and playback. They are exported through the HDMI jacks as PCM, not as a bitstream, so decoding cannot be done in a surround receiver even if it does have a decoder. But the PCM should still sound good. If you were thinking of using analog jacks to feed surround to an HDMI-less legacy receiver, you're out of luck. The HD-A2 does not have a full set of surround analog outs (just a stereo pair) so it can't export the signal that way. But the translated-to-PCM signal is re-encoded as DTS and sent through the optical output, which also of course handles regular Dolby Digital and DTS 5.1. On the DTS side, the news is not as good. The Toshiba site cites "Dolby Digital Plus, Dolby TrueHD and DTS support for up to 5.1 channels (DTS HD support for DTS core only)." So full 7.1-channel goodness is not available for Dolby's two new babies. And DTS's two new babies are reduced to the resolution of old-style DTS.
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