Atmos vs 5.1

[Deanmad]

I've always wanted to get to the mother level.

Just so you know I failed typing in high school. Kept hitting the wrong keys because I had my eye on the beautiful girl who sit beside me while I was typing. Some things never change.

 

[Nyad]

Coming at this from budget & space limitations I've had to make a few compromises


Like many here waiting on a lotto win

 

[mandrix]

Just so you know I failed typing in high school. Kept hitting the wrong keys because I had my eye on the beautiful girl who sit beside me while I was typing. Some things never change.

s no big deal. i tooks the evelyn wood head sped redding course, and now i ma master at comprehesion n tiping.

 

[Sonik Wiz]

s no big deal. i tooks the evelyn wood head sped redding course, and now i ma master at comprehesion n tiping.

That looks like most of my pists begore looking for all those underlined words.

 

[LuvMyQuad]

Just so you know I failed typing in high school. Kept hitting the wrong keys because I had my eye on the beautiful girl who sit beside me while I was typing. Some things never change.

OK you're excused. But I still want to get to the mother level...

 

[Methuselah’s Grandpa]

As far as I have been able to read and understand on this topic, at least for TrueHD 7.1 (I don't know the details for EAC3-JOC), the Dolby Atmos encoding from the ADM master file generates up to the 4 called “Substreams” in the TrueHD 7.1 file. This to achieve backwards compatibility and playability on older systems.

Each of the “Substreams” can be recognized (or not) and decoded by each particular AVR/Processor.

I personally visualize each TrueHD Atmos mix as having 4 packages, each package fits inside the previous one, the first and primary package/substream is the stereo one, ...the more expansive your system is, the more packages your AVR/media player can see, use and then unpack/unfold:

#1. The stereo package: the whole mix summed to just LEFT + RIGHT.

#2. The 5.1 package: the LFE & Center are unpacked, ...whatever is "in the back" of the overall mix is sent to the side-surrounds. All of that unpacked/unfolded audio is then 'subtracted' from the front pair.

#3. The 7.1 package: simply unfolds two channels from the side-surrounds and then gets 'subtracted' from the sides.

#4. The Atmos package.

I'm not sure how accurate this breakdown is, but for me, it is an easier concept to grasp. This way of looking at it also doesn't use the concepts of down-mixing or a "fold-down" in the traditional sense.

 

[LuvMyQuad]

I rip everything i buy. For stereo I'm trying to decide if I've ever had to resort to ripping the True HD stream. There always seems to be an LPCM option on the disc. Either 24/48 or 24/96.

 

[LuvMyQuad]

I personally visualize each TrueHD Atmos mix as having 4 packages, each package fits inside the previous one, the first and primary package/substream is the stereo one, ...the more expansive your system is, the more packages your AVR/media player can see, use and then unpack/unfold:

#1. The stereo package: the whole mix summed to just LEFT + RIGHT.

#2. The 5.1 package: the LFE & Center are unpacked, ...whatever is "in the back" of the overall mix is sent to the side-surrounds. All of that unpacked/unfolded audio is then 'subtracted' from the front pair.

#3. The 7.1 package: simply unfolds two channels from the side-surrounds and then gets 'subtracted' from the sides.

#4. The Atmos package.

I'm not sure how accurate this breakdown is, but for me, it is an easier concept to grasp. This way of looking at it also doesn't use the concepts of down-mixing or a "fold-down" in the traditional sense.

You know none of this is done on the fly right? They are all complete mixes.

I've often wondered how one can select, say the 5.1 mix. It's not on any of the menus unless it's a stand alone dedecated mix. I also wonder if you select stereo playback if it plays the substream or the LPCM layer.

 

[SomethingAnything]

Atmos v 5.1? I'm non-binary when it comes to MCH music. Quad, 5.1, Atmos -- I just love it all. I guess I'm what you'd call 'amultichannel'. There must be others out there like me.

 

[MidiMagic]

Just so you know I failed typing in high school. Kept hitting the wrong keys because I had my eye on the beautiful girl who sit beside me while I was typing. Some things never change.

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