RESOLVING THE LEDGER
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Pick a good benchmark video, and stick with it.
Tulcarion/Getty Images Immersive, cinema-grade audio at home isn't impossible, but getting it right can be a labor of love. Setting up a Dolby Atmos sound system , for instance, requires careful speaker placement and plenty of fine-tuning for the best results. If it's done right, the audio should feel like it's coming from all around you.
The only problem is knowing how to test it, because you can't just hook it up and assume everything will sound right in your room. Once you've checked each speaker is working properly, you'll need to put the entire system through its paces to check that you're getting the full Dolby Atmos experience.
Lazy_bear/Getty Images You've installed your Dolby Atmos sound system. Before you settle down for a movie, you're going to want to perform some technical testing first. To be clear, this isn't going to be a test of how good your system sounds. It isn't necessarily calibrated, and you'll probably need to make further tweaks and changes.
What it is, however, is a test run of each component in your Atmos setup. Dolby's official 7.1.4 channel test file lets you test whether each speaker and audio channel is working as expected. This'll let you check your speakers are working properly, with clean audio and no dropouts. It can also be used with smaller Atmos setups, such as 5.1.2, although the test includes channels that those systems don't have. Those channels may just stay silent, or it may sound like it's coming from a different speaker than the file suggests, depending on your config.
It's also an immersion test. If your setup is working correctly, each test signal will match to a specific speaker and correspond to a different audio channel . As the channel test works through each speaker, you should be able to pinpoint where it's coming from, matching up to what the test file is telling you. For instance, if the speaker tells you that it's playing from the left top rear, it should sound like it's coming from there.
The test file is a video, so you'll see a visual guide to explain which speaker should be sounding. If you've placed a speaker in the wrong place, this'll give you a chance to swap it out. You can also correct any wrongly-assigned channels to speakers in your settings, if needed.
The official Dolby Atmos 7.1.4 channel test file is available to download from Dolby's website . Third-party alternatives also exist online with different audio mixes to try out, too. Once you've tested the setup and you're confident that it's technically working, you can move onto trying it out with some real content.
Imaginima/Getty Images At this point, each speaker should be working, so the next test is to try playing real content you'd listen to that has been mixed for Dolby Atmos. You'll only know from playing real content, like movies you watch or songs you listen to, if the immersive experience you're expecting is right or not.
You can sit for a full-length movie but, realistically, that isn't a good test. You'll want a brief sequence that you can watch and replay, repeatedly, while you make adjustments. It'll give you a benchmark to refer back to with each change you make. Once you have that, you can make adjustments to your setup to improve the audio.
Sol Levante is a short anime film produced by Netflix that's perfect for this. It's under five minutes long, so you can replay it again and again. More importantly, it makes use of an extensive Dolby Atmos spatial audio mix that works as a stress test for your setup. The audio playback features movements and positional effects to help you test how accurately your system places sounds around and above you.
There are a couple of things you'll want to listen out for as the movie plays. Volume is important, but for Dolby Atmos, spatial awareness is the greater priority . Audio that moves around on-screen should move throughout your speakers, with dialogue that stays anchored and clear at the front. Any ambient effects should help give you that immersive feel of a space greater than just the screen, filling the entire room around you from top to bottom.
The whole point of Dolby Atmos audio is for you to feel like you're experiencing three-dimensional audio . If Sol Levante sounds right, you can move onto a bigger test, like a full-blown movie. Just be sure that you stick to a benchmark if you want to make further tweaks. It could be a key point in the film with a few minutes of variation in the audio, for instance, that you replay again and again to get your setup sounding right.
You can also use other types of content, like music through Apple Music, to test Dolby Atmos. For the full Dolby Atmos experience, however, you'll need an Apple TV 4K connected via HDMI to your kit. The important thing here is picking songs with obvious spatial effects, with a good set of vocals, instruments and effects throughout. It helps if it's music that you listen to regularly, as you'll have a better feel for how the music should sound in your room.
Firman Hendrianto/Shutterstock Your Dolby Atmos setup should sound clear and well calibrated by this point. If it doesn't, there are several points in the chain that you can double check to fix any problems.
The source might be the issue itself. Make sure that the movie or song that you're playing is made for Dolby Atmos, meaning it has Dolby Atmos audio available for playback, rather than standard 5.1 surround or stereo. The streaming service you're watching and the playback device itself need to support Atmos content, too.
It's never a bad idea to double-check all of your connections, either. Start with your individual speakers and subwoofer, but also check the link between your playback devices and your sound system. HDMI ARC or eARC is probably the right call here, as it lets your TV pass Dolby Atmos audio through to your sound system.
You can also double-check your speaker assignments and calibration settings. Starting a...
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