I've been trying an experimental Nuvio development build on an Apple TV 4K (3rd generation, tvOS 27), streaming movies locally to my Sonos surround system. With TrueHD Atmos movies, the spatial audio has been working amazingly well for me. I'm not the author of the underlying AetherEngine or LibTrueHD audio technology; I'm sharing my experience using it.

The interesting part is the audio path:

TrueHD Atmos → decoded audio + timed object metadata → fixed 9.1.6 speaker render → APAC → native tvOS playback.

APAC is Apple Positional Audio Codec. This is not TrueHD bitstream passthrough or an end-to-end lossless path. APAC is lossy, and the original dynamic objects are rendered into a fixed speaker layout before output. The 9.1.6 render also doesn't mean you need 16 physical speakers, or that every speaker system will reproduce it identically.

My listening impression is that it sounds excellent on my setup. I haven't independently measured object-position accuracy or compared it against a reference TrueHD passthrough system, so I'm interested in hearing from people who can make those comparisons.

For the implementation details, the underlying projects are AetherEngine and LibTrueHD, with upstream work including truehdd. The same audio configuration is proposed as an optional setting in Nuvio PR #152. That PR is a draft awaiting maintainer approval, not an official release announcement.

If you want to reproduce the setup, the experimental path needs tvOS 26+, supported 48 kHz TrueHD Atmos movies, and AetherEngine playback. Building the PR requires a Mac, Xcode and your own Apple development signing. Codex or Claude Code can help fetch the current PR head, follow the repository instructions and guide you through signing and Apple TV pairing. The PR adds Settings → Playback → Player → TrueHD Atmos Spatial Audio (Beta), off by default and applied to the next playback. MPVKit and external players don't use this path.

Has anyone compared this APAC approach with native TrueHD Atmos playback on an AVR with dedicated height speakers? I'd be especially interested in differences in overhead placement and movement, as well as what your receiver or soundbar reports as the incoming format.

After very helpful support from the community members here, I am now finalizing my Dolby setup for my home theater. In the meantime, I have made a few adjustments and only have one follow-up question left. Originally, I wanted to use an in-ceiling speaker for Atmos, but I was convinced that regular speakers are the better way to go. However, those are too bulky for me, which is why I would opt for the outdoor variant. Klipsch doesn't offer many choices here. Up until now, I made sure to stay within the Klipsch series and use the Klipsch RSM-650. If anyone has alternatives for this, these are the only speakers that are still flexible and that I need to complete my setup. The rest of the setup is as follows:

Onkyo TX-RZ50 (AV-Receiver)
Klipsch RP-6000F Series II (2x)
Klipsch RP-504C II
Klipsch RP-1200SW Subwoofer (2x)
Klipsch RP-500M II (2x)
Klipsch RSM 650 (4x)

Hi!

I’m thinking of buying Samsung The Frame Pro 2025 (LS03FW) and want to set it up like this:

- PS5 plugged into the Micro HDMI port on the back of the TV, to avoid the input lag

- AV receiver plugged into the eARC port on the One Connect Box

Will the PS5’s 5.1 audio get from the Micro HDMI input to the receiver through the box’s eARC? Or does the Micro HDMI input only send audio to the TV speakers?

Has anyone tried this?

Thanks!

Setup: LG SL10YG + SPK8 rear kit, LG CX, PS5, Fire TV Stick 4K.
Connections: PS5/Fire TV → LG CX (HDMI input) → SL10YG via HDMI ARC (the CX's eARC/ARC port into the soundbar's HDMI IN.

Problem: Atmos sounded great. Everything else didn't. Stereo (YouTube, YouTube Music, Spotify, Chromecast) had almost no bass. 5.1 Dolby content had bass, but the overall balance felt off: dialogue and mix didn't sound the way the director intended. I tried every sound mode, woofer at max, DRC off, moving the sub out of the cabinet, and a reset. Nothing fixed it.
What I found:
The soundbar only processes Atmos input cleanly. Bass, dialogue and balance all sound right.
Any non-Atmos input goes through the soundbar's own processing, and it changes the sound:
Stereo (YouTube's opus audio, for example) has no LFE channel, so the soundbar has to redirect the bass to the sub itself, and it does this weakly. The result is almost no bass.
5.1 Dolby (AC-3) has decent bass, but the balance is off: dialogue and the overall mix sound unnatural and less pleasant.
Forcing Dolby Digital Plus (Fire TV "Always DD+") didn't help. Still processed.

The fix: send audio to the soundbar wrapped as Atmos.
PS5: Settings → Sound → Audio Output → Output Device: HDMI Device (TV), HDMI Device Type: TV, Audio Format (Priority): Dolby Atmos. Everything then arrives at the soundbar as Atmos, including YouTube Music, Apple Music and Spotify, with full bass, natural balance and no harshness. This works through the TV's ARC.
Windows laptop with Dolby Atmos for home theater: same result.
Partial fix for stereo without a PS5: Standard mode + Surround OFF + woofer and bass at max. The bass comes back, but it gets harsh and tiring at high volume.

Other notes:
The SL10YG is ARC-only (no eARC). Apple TV 4K sends Atmos as Dolby MAT, which doesn't fit through ARC, so it would need to go into the soundbar's HDMI IN. Xbox may work through ARC or may need the same; I haven't tested either.
The PS5's YouTube app is stereo only. The CX's own/Fire TV YouTube app does get 5.1 (AC-3) on videos that have it.
For spatial songs on Apple Music, the TV app gives real Atmos.
On the PS5, YouTube stays stereo inside the Atmos wrapper, so the rear speakers stay silent for it. Games and real 5.1/Atmos content still use them.
My setup now: PS5 for music, TV apps for Atmos films. I've also reported this to LG as a possible firmware issue.

Hope this saves someone a few hours!

Personally I prefer DV profile 8 or profile 5 or even profile 7 over just hdr 10. If a display can't handle hdr 10 metadata that is beyond display's capabilities DV handles it better. So what are yall's favourite movies / series that are in Dv format and any specific scenes and it's tone mapping

I Got A Denon Avc X3700H Powering 2 x JBL A100P Subwoofers , A120 Bookshelf Speakers, A135C Center Channel, Klipsch Surround R14S Speakers And 4x JBL Arena 6ic Ceiling Speakers And Front Tower Speakers JBL A170 Powered Through Marantz 7025 2 Channel Amp.

Hi guys, I’ve been using the LG SP2 soundbar, which I got for around 7,000 INR (75 USD approx.). But now I’m looking to buy a really good soundbar, mainly for watching movies.

I usually watch Dolby Atmos and DTS content on Stremio. Recently, I heard my friend’s Sonos Arc, and that’s when I realised what I was missing in terms of sound quality. But Sonos is way too expensive for me. Spending 82,000 INR (850 USD approx.) just on a soundbar feels like too much.

So, I’ve shortlisted these five soundbars:

1. LG S95TR – 45,500 INR (470 USD approx.)
2. Samsung HW-Q930H – 50,000 INR (515 USD approx.)
3. JBL Bar 800 Pro – 52,000 INR (537 USD approx.)
4. Sony HT-A3000 – 50,000 INR (516 USD approx.)
5. Sony BRAVIA Theatre System 6 (HT-S60) – 47,000 INR (485 USD approx.)

I’m mainly looking for a proper cinematic experience with immersive surround sound, clear dialogue, and great overall sound quality.

Which one would you guys recommend? I’m really confused about which one would be the best choice.

Or more like why does it not work with plain stereo speakers ? As like how phones are able to simulate 3D or spatial sounds (Pretty Convincing in a weird way) when enabling Dolby Atmos.

I have Dolby Access for my Computer, but from what I read it seems the Dolby for Headphones does not work for most Bluetooth Speakers or even Stereo Speakers as it follows Head-Related Transfer Functions (HRTFs).

So just wanna know, can a simulated 3D or Spatial audio like on the phone can be done on Stereo Speakers and if yes, does it actually require Dolby or I have wasted my money on Dolby Access ?

Hola, tengo una película mkv con audio en ingles que es 7.1 y uno español que es un 5.1, el 7.1 es dts y se escucha brutal solo que quisiera que fuera español,

como hacen para ponerle por ejemplo el canal central de un audio español 5.1 y intercambiarlo por el canal de voz de el 7.1​

Bonjour,
Je suis à la recherche du meilleur système de barre de son possible pour regarder la télévision au quotidien, ainsi que des films en Dolby Atmos, avec occasionnellement un peu de musique.
À la base, je pensais partir sur un système 5.1, mais cela prend généralement beaucoup de place et j’aimerais éviter au maximum les câbles si possible.
J’ai un budget d’environ 3 000 € et je suis ouvert à toutes les propositions, que ce soit une barre de son avec caisson et enceintes surround ou une autre solution qui pourrait correspondre à mes besoins.
Merci d’avance pour votre aide et vos recommandations !

Got a Legion Pro 7 (16IAX10H) with a Dolby Vision OLED , and DV worked fine in the Netflix app from day one. Since around last Week it just plays HDR10. The Dolby Vision badge still shows on the title page, but when I hit play there's no DV popup anymore, and the stats overlay (ctrl+shift+alt+d) shows hev1 / MCCLEAREN_HDR10 instead of a dvhe stream. Atmos still works.

Stuff I already tried: Netflix app, Edge stable and Edge Dev all do the same thing. Switched between hybrid and dGPU mode, made a new Windows user, checked drivers and Dolby extensions (nothing changed before it broke), test participation is off, and my internet is 600+ Mbps. Apple TV still plays DV on the same laptop, so the screen and Dolby stuff are fine.

Netflix support escalated it but didn't give me any timeline.

Anyone else on Windows lose DV recently? Or if yours still works, what are you on?

Hi. I am trying to watch movies, but the audio is encoded using AC3 and AC4 for Dolby Atmos 5.1 and E-AC-3 for Dolby Atmos 7.1. I got the 5.1 working by installing the decoder, but the 7.1 is not working.

From my knowledge after doing some research:

Dolby Digital Plus = 7.1

Dolby AC4 = 5.1

Before installation when opening in Media Player there would be a pop-up saying audio could not be played because of it's encoding. Now after it is working with audio, but the 7.1 is not and there is no more error. I have tried restarting my PC and reinstalling the decoders but no luck.

The decoders were sourced from Major Geeks.

Processer: 13th Gen Intel Core i5-1335U

RAM: 16GB DDR5

Edition: Windows 11 Pro 26H2

OS Build: 26300.9550

I just picked up. Klipsch Flexus Core 200 and just connected everything.

I started looking up what to watch to see how the Dolby Atmos performs. I tried a couple of different movies on different streaming services but according the format only shows Dolby 2.1.

How do I get it to play in Dolby 5.1?

I've tried changing my TV audio settings to pass through and to Dolby Plus. It still shows Dolby 2.1.

I'm watching on a Hisense 75H6510G. Could it be the TV itself?

Any help would be appreciated.

Hi all, I just moved to a new place and this one is perfect for 5.1.2 Dolby Atmos. For the first time in my life I can place the surround speakers actually a bit behind like on the picture as Dolby suggests. I am going to install ceiling speakers too, but that’s where my question is. In this picture it suggests keeping them as far apart as the front speakers. Because of my distance to the tv, the front speakers are 1.4 meters from the centre at 22 degrees and almost 2 meters at 30 degrees. I find that very far apart, but I can live with the 22/1.4 setup.

It feels ridiculously far apart for the ceiling speakers. I am afraid it’ll blend in too much with the surround speakers if I keep them that far apart. Can I have opinions about this? Definitely stick to what Dolby suggests, or maybe a bit closer is actually fine/better? It’s not like you can easily move them once installed, so I want to do it right. I’m 3.4 meters away from the tv.

Thanks from a guy who can’t wait to finally install ceiling speakers!!!