Dolby Digital and DTS mandatory for HD-DVD and blu-ray

Discussion in 'AV Receivers' started by AlbertA, Oct 2, 2004.

  1. AlbertA

    AlbertA Stunt Coordinator

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    I haven't seen this post on the forum here. But here you go..

    http://www.dtsonline.com/company/pre...cID=1&yID=2004

    http://www.dolby.com/about/news_even..._23.09.04.html

    Summary:

    Dolby Digital Plus(*) and MLP Lossless are mandatory for HD-DVD.

    Dolby Digital and DTS are mandatory for Blu-ray.

    Optionally DTS++(**) (DTS extensions) for both formats.

    *Dolby Digital Plus is backwards compatible with Dolby Digital and offers more channel and higher bit-rates.

    **DTS++ is the collection of all DTS extensions, such as higer data rates ( Rates greater than 1.5Mbps), higher sampling rates (like DTS 96/24), more channels (up to 7.1) , lossless capabitily and maybe others.
     
  2. john_FE

    john_FE Stunt Coordinator

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    Interesting.
     
  3. Mike_J_Potter

    Mike_J_Potter Second Unit

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    Do any current receivers support these formats? Just wondering if I should put off a receiver upgrade until then.
     
  4. David Judah

    David Judah Screenwriter

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    I wouldn't put off a receiver purchase if you need one now, because it will still be awhile before the formats are on the market. I would suggest, however, that the receiver you purchase has multi-channel inputs(preferrably 8 channel), since I imagine the players will have built-in decoders.

    DJ
     
  5. Dan Hitchman

    Dan Hitchman Cinematographer

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    However, Blu-Ray can do uncompressed 6 channels-24/192 LPCM or 8 channels-24/96 LPCM. They allocated 27+ Megabits/sec just for audio.

    I'm not at all convinced about DTS++ Lossless until I hear how it works. For instance, if you have more than 6 channels then do you wind up with matrixed duplicate channels on the "backwards compatible" core portion of the data that must be de-matrixed. That would be unacceptable to me.

    Why Blu-Ray doesn't add MLP Lossless into the mix is beyond me. It's a proven performer with licensing channels in place that can do upwards of 16 channels or more with bit-for-bit precision.
     
  6. David Tolsky

    David Tolsky Supporting Actor

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    Is there room for MLP and Hi Def imaging together on the same disc?
     

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