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New ViP 622: Very Impressed: Setup Questions

Discussion in 'ViP612/622/722/722K DVR Support Forum' started by munchcolo, Dec 29, 2006.

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  1. tnsprin

    tnsprin Hall Of Fame

    2,130
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    Mar 15, 2003
    I keep clearly say Dolby Pro logic not dolby pro logic II or IIX. It was invented to try and to accurately produce the original Dolby Surround. Later version ii and IIX obviously added ability to go to 5.1 and 7.1 and since the information is not in the original Surround mix it is clearly faking the additional info. They also started emphesising that they could take stereo signals and introduce Surround like sound.

    Now of course they are pushing Dolby TRUEHD, even though there are almost no receiver that can handle it, most counting on the source player (hd-dvd or bllu-ray(optional) to handle).

    As far as the ViP 622, it can deliver the optical coded Digital dolby to your receiver which means it can deliver 5.1 and appears to be able to also deliver the Dolby Digital EX.
     
  2. William

    William Legend

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    Oct 28, 2006
    Dolby can be confusing with their nomenclature. Here is a brief (hopefully at least semi accurate) history of Dolby consumer (not theater).

    Dolby Surround sound was the first with a rear channel matrixed. Then Pro Logic added a center channel matrix and was/is the standard analog/matrix system. Next up was a digital system and Dolby tried 2 before deciding on AC-3 (renamed to Dolby Digital). Dolby then decided to use its "old" matrix technologies to shoehorn an extra rear channel into DD and be 100% compatible (622 included) with all current DD setups (just the way Pro Logic is compatible with all 2 Ch. setups). This matrixed rear channel version of DD is called DD-EX.

    Next Dolby had to come up with a product to compete with Lexicon's excellent Logic 7 that took 2 channel and created a realistic 5.1 to 7.1 channel sound field. Dolby came up with a new codec and to the dismay of many named it Pro Logic II instead of coming up with a new name. While using a familiar and trussed name this can cause confusion because the original Pro Logic and Pro Logic II have nothing in common other than the name and Pro Logic II's ability to decode Pro Logic.

    Now Dolby has released two new codecs DD plus (DD+) and TrueHD.

    DD+ has regular DD as a "core" and adds on top of it. It can go from 640kbps (DD limit) to 3Mbps and have up to 7.1 discrete channels. DD+ could be used in the satellite industry for improved SQ and/or extra discrete channels. It is also backwards compatible because all current systems would read the standard DD "core" embedded in DD+. I would love to see this system added to some E* channels and the 622 updated to handle. Of course you would need a receiver with HDMI audio input to handle it. SPDIF would be "core" only.

    TrueHD is a lossless compression scheme ( much like a zip file for data) that can be used on HD-DVD and BD. It will likely never be used in satellite broadcasting. Another misconception about TrueHD is need for a new yet to be released HDMI 1.3 receiver to use it. The TrueHD decoder can be (and is on many) included in the HD-DVD/BD played and decode and send a LPCM stream over HDMI (1.0 and up) or output through the analog outputs. I have a HD-DVD player and enjoy TrueHD this way.
     
  3. gilunionhall

    gilunionhall Legend

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    May 8, 2006
    "and the Broncos about to be in the playoffs (likely)"

    is there another team you would like to root for now?

    gil
     
  4. munchcolo

    munchcolo Cool Member

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    Dec 19, 2005
    Oh well, I really wanted to spend more time in the workshop and less in front of the TV. Besides, the new season of 24 starts on January 24, and that's reason enough for HD.
     
  5. gilunionhall

    gilunionhall Legend

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    May 8, 2006
    hi munchcolo -

    i have purchased a denon 1905 receiver that is just sitting there waiting to get hooked up after i finish building my speakers.

    i'm not sure how similar the 2 receivers are, but i have bookmarked this thread for when i get everything ready to be hooked up.

    i initally got the Dish system because they were the only ones with TNTHD and 1/2 of the NASCAR races were on that channel - and it was well worth the purchase.

    gil
     
  6. munchcolo

    munchcolo Cool Member

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    Dec 19, 2005
    It's NOT January 24, it IS January 14 for the premier of 24.
     
  7. Larry Caldwell

    Larry Caldwell Godfather

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    Apr 4, 2005
    The correct advice for audio is very similar to the correct advice for video - use the setting that sounds best on your system. Actually, I change the audio settings more often than I change the video settings. Sometimes I use the THX setting, sometimes straight DD, sometimes Dolby Prologic, sometimes Stereo, depending on the source. Audio CDs sound better letting the DVD player decode them and send the signal over the analog outputs, but DVD movies sound better riding on light.

    Fortunately, my recever lets me switch just by poking a button on the remote. Sometimes I try two or three modes before I find the best one.
     
  8. sleepy hollow

    sleepy hollow Legend

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    Aug 25, 2003
    Regarding the 622, I thought that it would put out 5.1 only on the optical output, and not the HDMI. My understanding is the 622 HDMI only puts out 2 channel stereo.

    If so, then the Dolby Pro Logic II or IIx will process the 2 channels into a surround field.

    I have the Yamaha RX-V2600, and still cannot figure out what the best setting is. I have hdmi for my projector, and am using the component/optical for my family room HDTV CRT. (Both TVs see same content in HD, as available.)

    I think I just decided today to split the optical and run that to the 2600 and see if I can also get the 5.1 that way in the HT room (7.1 setup).

    Also with the 2600 there is the Yamaha proprietary DSP technology which takes a variety of source audio and processes it into an allegedly superior 7.1 field. I must say it sounds pretty darn good with 5.1 DVDs (T3, Narnia).

    Narnia also claims to have DTS encoding, which I am trying to "isolate" on the 2600 to test that vs. Dolby. No luck so far, but just started trying when I noticed the logo on the box.

    Life was so much simpler when we had only a handful of b'cast channels, could not record material, and had to wait 2-3 years for feature movies to come to TV.

    I recall being just as thrilled with that lo-tech solution, because it did not seem lo-tech then. Ah, well, we must be sure to reward the Hollywood glitterati who set such good examples for all of us on how they keep families together and model virtue every day in their private lives.

    But I digress.

    Surround sound is really a gas!
     
  9. TheTony

    TheTony Mentor

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    Jan 6, 2006
    I'd assume he means that it cannot send a 720 signal to the display device. That is, while it can receive a 720 signal, it cannot display it, at least natively. As you noted, it will be (up)converted.
     
  10. hoobafrank

    hoobafrank New Member

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    Jan 8, 2007
    1080i displays 1080 lines of resolution at 30 frames per second. 720p displays 720 lines of resolution at 60 frames per second. Depending on the type of programming, 1080 might look better because it has more lines. You'd want to use 720 on programming that has a lot of fast movement like sports programs or racing because it displays more information per second than 1080i. Is really difficult to see the differences in the two. But if your tv can't display 720p without converting, I would just run 1080i.
     
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