How to Setup Your Room for Atmos and Immersive Audio


I think this video by the Dolby Institute is targeted at professionals but the principals translate to the home. You’ll notice that they don’t use the ceiling speakers pointing straight down but bookshelves that are angled toward the MLP. The other thing you’ll notice is that all of the bed channel speakers are at the same height (that includes the center channel). At 16:00 minute in the video make sure to watch the part about room tuning, very helpful as to what DSP can and cannot do:

" I feel like money spent on this type of help (room treatments and acoustics) will be more valuable than any piece of gear you will ever buy"

 

kota1

Listening to Apple Spatial audio atmos mixes are like anything else, some good, some not so good. I like "We Take Requests" atmos mix by Oscar Peterson, all of the Beatle atmos mixes, and Kraftwerk in atmos is really good, play it loud and it just pressurizes the entire room.

@Kota1 Say you have a speaker at 135 degrees to your right behind you and say you have a signal from 225 degrees on your left behind you. You can’t perceive a phantom center channel between them but that is how Atmos works, Atmos creates phantom channels that are moveable. To me the only way to fix this is to not have the surround channels symmetric. A much clearer example is where you have Atmos speakers in the ceiling behind you at equal angles they nearly reach your ears at the same time not allowing your brain to position them well at all. Other than using a very dead room it doesn’t seem like there is an answer other than making the speakers non symmetrical, playback would still work because no two systems would be the same about of non symmetricalness, if that’s even a word. What do you think?

 

@kota1 So I discovered something that I thought I knew but didn't know for sure. In  acoustics and photography and many other arts there is something called the rule of thirds, well I panned (actually I entered the info) to have the front speakers ⅓ of the way back and ⅓ of the way in, when I did that it felt like I moved into the stage a bit. It was interesting that when these numbers were exact and my head was right in the sweet spot the effect was very strong. I'm not sure panning in the traditional sense would have achieved the same effect. The only other satisfying speaker position was full blown stereo 100% left and right which felt more natural.

It is an odd thing to set up music this way, I was a musician and a monitor mixer for bands when you are in the listening position and you are facing the band looking at speakers you are engulfed in it but facing the wrong way, even with side fills as a musician is used to it feels wrong.

@donavabdear 

To me the only way to fix this is to not have the surround channels symmetric.

My room treatments are not symmetric, worked fantastic for me. See "Anthony Grimmani's acoustic recipe.

say you have a signal from 225 degrees on your left behind you. You can’t perceive a phantom center channel between them but that is how Atmos works

My room has a setup less than ideal for back surround speakers so I chose a specific speaker that uses a Harman proprietary technology (HST) to deal with it. It makes it seem like the entire back wall is a speaker in my room:

What do you think?

I can't say what will work for you. What worked for me was following the Dolby specs for speaker setup, measuring, treating my room, using a calibrated mic and upgraded audyssey for DSP, measuring, tweaking and listening, until it met or exceeded what I wanted (both objectively and subjectively). Now I just got that tip about top middle speaker placement from the Trinnov guide so I will tweak. 

@donavabdear 

In  acoustics and photography and many other arts there is something called the rule of thirds, 

I prefer Fibonacci ratios

 I was a musician and a monitor mixer for bands

Talk about a sweet spot. Some of my favorite tracks are sound board mixes from concerts you can get at nugs.net and wolfgangs.com