What is Apple spatial audio? How it works and how to use it

Hero image for what is Apple spatial audio showing Kate wearing AirPods Pro 2
(Image credit: Future)

If you've ever wondered what Apple spatial audio is and whether you need, then you've come to the right place. Spatial audio is 360-degree sound format that recreates a surround effect through a pair of speakers, including headphones and even a tiny pair of earbuds. When spatial audio first arrived it was mostly seen as a format for enhance video playback hen when using Apple's flagship AirPods Pro earbuds and AirPods Max headphones, but spatial audio content is also available on Apple Music as well.

But what is spatial audio, and how do you use it? In this guide we’ll explain everything you need to get this 3D format up and running, from making sure you have the right hardware to finding content that allows you experience full spatial audio immersive sound.

What is Apple spatial audio?

What is spatial audio

(Image credit: Future)

Spatial audio is how Apple brands its immersive, 360-degree immersive sound tech, though the concept is sometimes referred to as “spatial audio” in more general terms as well. It’s essentially a form of digital surround sound wherein the origin points of different sounds can envelop you from all directions.

That sounds like plain, old, living room surround sound, right? Except with certain hardware, spatial audio can keep those origin points in place even when the speakers themselves are moving, namely on headphones like Apple's AirPods Pro, AirPods Pro 2, and AirPods Max.

Say you’re watching a film on your iPhone where someone is loudly walking along the left of the screen. If the movie is compatible with spatial audio, you could turn your head to the left and the footsteps would then sound like they were coming from straight in front of you.

Being a form of 360-degree audio, spatial audio’s effect isn’t limited to a flat axis either. Like Dolby Atmos or DTS:X, spatial audio can add a sense of height, making TV and movie playback even more immersive. In fact, spatial audio piggybacks off Atmos, as content you can view was originally mastered for Dolby's platform.

How do I use spatial audio?

Apple AirPods Max image for spatial audio feature

(Image credit: Apple)

The most important thing is making sure you have the right hardware. Right now, spatial audio-compatible headphones run to AirPods Pro (both 1st and 2nd Generation models), AirPods Max, AirPods (3rd Generation), and Beats Fit Pro. Several of the older models didn't originally launch with spatial audio support, but be available and installed automatically with the latest firmware update.

However, for spatial audio content as it appears in Apple Music, Apple says that any headphones will be able to play songs with spatial audio. On Apple and Beats headphones with a W1 or H1 chip, spatial audio will be enabled automatically, but for any other headphones you just need to switch Dolby Atmos to "Always On" in Apple Music app's settings.

Apple Music's take on spatial audio can also be played through the integrated speakers of newer Apple devices including iPhone XS or later (except iPhone SE), iPad Pro 12.9 inch (3rd Gen) or later, iPad Pro 11 inch (1st gen) or later, iPad Air (4th Gen) or later.

In much the same way as Apple Music offers spatial audio content with any headphones, Netflix now also offers spatial audio support across all its subscription tiers at no additional cost, enabling listeners to experience the immersive sound format through the TV's speakers, or a pair of add-on speakers.

For video content, you'll need compatible headphones and a source device. Apple TV 4K is getting updated to offer spatial audio, as are recent macOS devices like the MacBook Pro, but for mobile usage you'll need an iPhone or iPad running iOS 14.3 or later. However, not all older Apple devices will work, even if they can be updated to the requisite version. Here’s a list of spatial audio-compatible mobile devices for video: iPhone 7 or later, iPad (6th Gen) or later, iPad Air (3rd Gen) or later, iPad mini (5th Gen), iPad Pro 12.9 inch (3rd Gen) or later, iPad Pro 11 inch (1st gen) or later.

With compatible hardware you’re almost set, and remember that you can turn spatial audio on or off at your choosing. To turn if off while you’re already watching a video, open the Control Center, press and hold the volume control then tap on the spatial audio option to disable it.

To turn spatial audio on or off for everything, open Settings and navigate to the Bluetooth menu. In the list of connected devices, tap the “i” icon next you’re your AirPods then select whether to turn spatial audio on or off.

Apple also says that Apple Music's spatial audio content will be playable through the speakers of the "latest versions of iPhone, iPad, and Mac," though we'd be surprised if the effect was nearly as strong as if you were wearing headphones.

Airpods Max spatial audio

(Image credit: Apple)

Also important to note is that media content must be available in the 5.1, 7.1 or Dolby Atmos surround sound formats for it to work with spatial audio. 

Some music streaming services already provided Dolby Atmos-compatible songs prior to Apple Music, namely Amazon Music HD and Tidal. Still, Amazon limits Atmos playback to its own Echo speakers and Tidal seems to be keeping its immersive capabilities exclusive to Sony’s Spatial Audio rival, 360 Reality Audio. As such you can’t get spatial audio music from either, leaving Apple Music as the sole source of compatible tunes.

You do at least have a choice of where to stream compatible TV shows and movies. Apple TV Plus, HBO Max, Disney Plus, Hulu and now Netflix all support spatial audio via their respective Atmos-enabled content.

How does spatial audio work?

Apple Spatial Audio

(Image credit: Apple)

There's a few things that are needed to make spatial audio happen. First, sound engineers will map the individual audio parts of a piece of content — dialog, sound effects, music soundtrack and so on — to specific points on a digital 3D space. Imagine a sphere build around the listener, with each sound source placed around it. This allows for those individual sounds to seemingly come from either side, behind, above or below you. Engineers can also adjust the “distance” of sounds so that they seem closer or further away.

Obviously, headphones don’t have a series of satellite speakers for “true” surround sound, and they can’t achieve a sense of height by bouncing sound off ceilings like Dolby Atmos does. So spatial audio’s surround sound effect needs to be purely digital.

AirPods spatial audio

(Image credit: Regan Coule/Tom's Guide)

Here’s where it gets a little complicated. 360-degree audio playback on headphones is achieved though Head Related Transfer Function (HRTF) filters, which digitally adjust how sounds are played so that they bounce into your ears in such a way that they appear to originate from a certain direction. It requires both ears for your brain to perceive the intended effect, which is why the technique is known as “binaural rendering.”

The extremely basic version is that your brain is tricked into thinking you’re receiving sound from a fully three-dimensional space even when it’s coming from a set of two drivers either side of your head.

Once the matter of fitting surround sound into a pair of headphones is settled, spatial audio can then use head-tracking to create that feeling of being able to move around (or at least look around) the 3D space. The latest AirPods and Beats designs therefore contain accelerometers and gyroscopes, which can track your head movements in relation to an anchor device: the phone or tablet that the headphones are paired to.

Because the anchor device contains the screen on which you’re watching the spatial audio-mastered content, the system can make sure that sounds are played from directions consistent with the on-screen action. All while you can move your head around inside that 3D space.

However, you'll find Apple Music's implementation of spatial audio altogether simpler. Because the content is pure audio, it makes less sense to use the source device as an anchor point, and more importantly, most headphones don't have gyroscopes and accelerometers for head tracking. As such, it will probably be more akin to Sony's 360 Reality Audio: there will still be a 3D effect, with instruments and vocals surrounding you, just without the origin points of sounds staying in place as you move your head. 

Contributions from: James Archer

More: Learn how to turn on spatial audio on your iPhone.

Next: Find out what are best headphones to buy right now. Plus, check out how the AirPods Pro 2 vs. AirPods Pro compare, and discover how to clean an AirPods case quickly and safely.

Lee Dunkley
Audio Editor

As a former editor of the U.K.'s Hi-Fi Choice magazine, Lee is passionate about all kinds of audio tech and has been providing sound advice to enable consumers to make informed buying decisions since he joined Which? magazine as a product tester in the 1990s. Lee covers all things audio for Tom's Guide, including headphones, wireless speakers and soundbars and loves to connect and share the mindfulness benefits that listening to music in the very best quality can bring.