Dolby Goes for Height

Tom Norton broke the news about Dolby Pro Logic IIz, the first surround standard from the surround standard setter to incorporate height channels. It's an enhancement process, like Dolby Pro Logic II; not an encode/decode process, like Dolby Digital or TrueHD. It extracts what Dolby calls decorrelated non-surround elements, so it'll operate on things that belong in height channels, as opposed to, say, footsteps. It can operate in 7.1 or 9.1 configurations, without/with back-surround channels. Dolby's now in discussion with various manufacturers about licensed products. What I have to say about it is that it's a great idea -- I'd rather see folks adding height channels to their systems than useless back-surrounds (Dolby wants to make real sure I label that as my own opinion). And the implementation in speakers may be quite interesting, I imagine, everything from vertical structures (same footprint) to in-walls to speakers with top-mount drivers that bounce off the ceiling. Details here. Oh, and the pic is the Acer Aspire PC, glimpsed at the Dolby booth, and I mention it only because as I walked up to it, it said Luke, I am your father.
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