Panasonic BD60 & BD80 Secondary Audio Bit Rates

[BIslander]

Originally Posted by discking

The term secondary, as used by Panasonic would, at first, seem to indicate a secondary, different content stream. As they intend it, it is still somewhat non-intuitive, as what's really being said is not "primary" versus "secondary" but, instead, "core" versus "integrated".

Manuals often torture words and concepts in an effort to make things understandable to the uninitiated. But, the term "secondary audio" is unambiguous and it is not misused in the Panasonic BD80 manual. Secondary Audio refers to audio which is not part of the main soundtrack that must be mixed in by the player in order to be heard.

Both DTS-HD and DTHD use core lossy streams with pre-compression lossless elements that can either be combined with the core, to form a lossless high bit rate stream, or be discarded, leaving the original lossy core. Now, maybe what I just said is off, but that's the way I have read the explanations.

That is correct with DTS, but not with TrueHD. DTS uses a lossy 5.1 core and builds HD HRA and lossless Master Audio outputs by adding extension data to the core. TrueHD does not have a lossy core. The Dolby core is a lossless two channel downmix of the multichannel PCM source. The Dolby extensions add the data needed for 5.1 and 7.1. Each phase is lossless. The DD 5.1 output over optical is a separate track included in the TrueHD package solely for that purpose.

In any case, it's just terminology.

I suppose. But, you'll notice the first response to your post did not answer the question you were asking. That happened because you used the words Secondary Audio in the title even though the question had nothing to do with Secondary Audio.