Dolby Atmos is coming Home! - Page 11 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #101 of 115 Old 09-09-14, 12:08 AM
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Re: Dolby Atmos is coming Home!

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i personally don't see this as anything more than a NEO or DSX experience
DSX generates early side wall and proscenium reflections (that weren't in the source material) based on concert hall acoustics in order to simulate a larger listening space.

Neo:X uses matrix surround processing to extract ambient cues from the soundtrack to create a wider and taller front soundstage.

Atmos is a new mixing and rendering technology. When creating the soundtrack, mixers are able to go beyond mere channel assignments and give each sound x,y,z coordinates. The location of the sound in 3D space and its size is stored as metadata. Upon playback, the metadata is used to map the location of the sound to your speaker layout.

It is discrete object-based mixing and rendering, without any surround processing (generated ambience or extracted ambience) involved.

Sanjay
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post #102 of 115 Old 09-09-14, 12:42 AM
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Re: Dolby Atmos is coming Home!

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gazoink wrote: View Post

BTW, the X5200 will do 11.2, with 11 powerd speaker outs. It will do 13.2 if you use the pre-outs.
I am 99% certain this is not the case. It can power a 9.2 system all by itself (it has 9 amplified outputs), and can do 11.2 with the addition of a two-channel amp. There are 13.2 preouts, but only 11.2 can be used simultaneously.
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post #103 of 115 Old 09-09-14, 01:07 AM
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Re: Dolby Atmos is coming Home!

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DSX generates early side wall and proscenium reflections (that weren't in the source material) based on concert hall acoustics in order to simulate a larger listening space.

Neo:X uses matrix surround processing to extract ambient cues from the soundtrack to create a wider and taller front soundstage.

Atmos is a new mixing and rendering technology. When creating the soundtrack, mixers are able to go beyond mere channel assignments and give each sound x,y,z coordinates. The location of the sound in 3D space and its size is stored as metadata. Upon playback, the metadata is used to map the location of the sound to your speaker layout.

It is discrete object-based mixing and rendering, without any surround processing (generated ambience or extracted ambience) involved. Remarkable that you "don't see this as anything more than a NEO or DSX experience".
...said better than I did. Thanks.
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post #104 of 115 Old 09-09-14, 01:23 AM
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Re: Dolby Atmos is coming Home!

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What I want to know is. With Atmos "enabled" speakers, why don't the atmos modules articulate separately. With the importance on setting up L/R speakers, and the plethora of living room sizes, shapes, ceiling heights and seating distances, it seems like this would matter. Especially with the "object based" part, and bouncing the sound off the ceiling, it just seems like another way to fail the setup.
Probably because the up-facing speakers have fairly wide dispersion, and the longer path length means wider coverage in the listening area, and thus less need to aim.

Angled ceilings may be a problem.
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post #105 of 115 Old 09-09-14, 02:08 AM
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Re: Dolby Atmos is coming Home!

Didn't see it posted in this thread, but Dolby released an Atmos installation guide earlier today to help with speaker placement.

http://www.dolby.com/us/en/technolog...guidelines.pdf

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post #106 of 115 Old 09-09-14, 08:12 AM
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Re: Dolby Atmos is coming Home!

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sdurani wrote: View Post
Didn't see it posted in this thread, but Dolby released an Atmos installation guide earlier today to help with speaker placement.

http://www.dolby.com/us/en/technolog...guidelines.pdf
Well, there ya have it... start saving!


Seriously though, I've been looking for a guide just like this. Thanks for sharing Sanjay
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post #107 of 115 Old 09-09-14, 07:44 PM
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Re: Dolby Atmos is coming Home!

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sdurani wrote: View Post
DSX generates early side wall and proscenium reflections (that weren't in the source material) based on concert hall acoustics in order to simulate a larger listening space.

Neo:X uses matrix surround processing to extract ambient cues from the soundtrack to create a wider and taller front soundstage.

Atmos is a new mixing and rendering technology. When creating the soundtrack, mixers are able to go beyond mere channel assignments and give each sound x,y,z coordinates. The location of the sound in 3D space and its size is stored as metadata. Upon playback, the metadata is used to map the location of the sound to your speaker layout.

It is discrete object-based mixing and rendering, without any surround processing (generated ambience or extracted ambience) involved. Remarkable that you "don't see this as anything more than a NEO or DSX experience".
Like I hope i conveyed I am pleased to see new technology being created. I personally just haven't bought into whether it is better, other than the future possibility of endless speakers.
Its just debatable if one technology is better than another "generating" "processing""rendering". As is common in American politics and marketing different terms are used as time passes to give things a fresh feel. Truthfully, in the end each end user will have to decide if it adds to their experience.

I just want to add, that's why i like HTS, we can all have civil discussion and learn alot. I have learned a lot from all the articles and diagrams and comments. Keep up the posting...anyone who takes the jump and gets one of the new Atmos AVR and sets it up please do post a thread to fill us all in....

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post #108 of 115 Old 09-09-14, 10:47 PM
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Let's try it this way. Sound engineers mix a movie in Atmos. Nobody mixes a movie in Neo or DSX or Dolby PLz, nor indeed can they. Those are algorithms that manipulate something already created, with a result that is often pleasing but not likely as intended. Nothing at all wrong with that. It just means that Atmos is distinct because it is the mix as created by the director/mixer team, realized as fully as your speaker layout allows.

Obviously nothing wrong with sticking with the others for now (or forever). Just want to make sure the decision is based on accurate information.
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post #109 of 115 Old 09-10-14, 08:02 PM
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Re: Dolby Atmos is coming Home!

If a source material is 5.1
and say DSX takes a certain range of the left front and sends it to the left wide.

If a source material is atmos based
and say Atmos has a packet for left wide that packet could be sending the same range to the left wide as DSX did. The statement "it is the mix as created by the director/mixer team" is subjective to what they the director /mixer team are basing the packets off.

My thoughts, i may be wrong, are that they are not creating additional audio tracks with atmos.
In other words they are not creating 9.1 or 11.1 or 13.1 audio tracks on the discs.

I don't know if this helps explain or confuse people more about what I am trying to state.

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post #110 of 115 Old 09-10-14, 09:19 PM
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phillihp23 wrote: View Post
If a source material is 5.1 and say DSX takes a certain range of the left front and sends it to the left wide. If a source material is atmos based and say Atmos has a packet for left wide that packet could be sending the same range to the left wide as DSX did. The statement "it is the mix as created by the director/mixer team" is subjective to what they the director /mixer team are basing the packets off. My thoughts, i may be wrong, are that they are not creating additional audio tracks with atmos. In other words they are not creating 9.1 or 11.1 or 13.1 audio tracks on the discs. I don't know if this helps explain or confuse people more about what I am trying to state.
I think the difference is that they ARE creating different channels. As opposed to a "sound mode" that extracts information from say, 5.1 channels, where there isn't any extra info coded for the extra rear surrounds, heights or wides. It's just sending what it decodes( from its internal decoder ring?) as "not" vocal information, or specific sound effect info and sends it to height or wide channels. Kind of like a "hall" or "concert" mode does. Atmos on the other hand codes the height channels as discrete ones just like regular 5/7.1. So every "point" in 5.1.4 is a real discrete channel. Instead of extracting, everything from a "base" 5/7.1 track, the 2/4 in ceiling get coding to reproduce what's actually on the track to go to the appropriate speaker. Not just basically random ambiance. The same way a 5.1 track sends discrete info to each of 6 speakers. The point is, DD-HDMA is not recorded the same way as atmos. Therefore it's not played back the same way. I'm sure I've left a few gaps, but that's my basic understanding of it. Hope there's something useful in there. :-)
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