Dolby Atmos Xbox audio delay

After a lot of test, to solve it i plug xbox on my lg cx with option sync AV arc bypass and activate earc with my denon 1600h.

If earc is off there is a big audio delay but my denon receive an atmos emulated (pcm) for all game, If earc on no delay atmos OK on halo, forza etc... But no atmos on ubisoft game same as farcry 6.

Ubisoft game not really atmos but a dolby 7.1 sound ?

My conclusion If xbox use dolby atmos emulation or no earc there is a delay, if earc activate no delay but only atmos with game compatible

I have same problem everything shows as dolby atmos. I just get on with it . I dont have audio delay though 🤔

There are issues with dolby atmos that has been on going for a while though. Still no fix 🤔👍

If the game does not support Dolby Atmos, then the audio is normal stereo. Microsoft are working on updating Dolby Atmos, where if the game does not support Dolby, the audio will be converted to simulate Dolby Atmos.

Hello AnchelLabena,

We appreciate you for bringing this up to Xbox Forum.

We are sorry to hear that you’re experiencing audio delay when using Dolby Atmos for Home Cinema on your Xbox Series X with LG OLED C2 TV and Samsung Q950T Dolby Atmos soundbar.

We've found similar issues with LG OLED and LG Atmos soundbar (with rear speakers) and used an earc extractor (4k Dolby Atmos compatible) which completely solved the problem. You pass the audio HDMI earc out from the TV through the extractor and into the HDMI in of your sound bar.

Another user, states having delays using the Xbox Series X with Dolby Atmos games and apps such as Youtube and Gears 5 but NOT from the Dolby Atmos app’s demos. The Xbox is connected directly to their LG BX TV via the HDMI 2.1 and using eARC > ARC on their Onkyo TX-NR656. The TV’s apps do not cause this delay using Atmos, and the Dolby App on the Xbox.

We also found an explanation from another that the delay exists because natively, surround audio from a gaming console is in LPCM. To output a bit streaming format (or in this case a proprietary PCM codec like DOLBY MAT 2.0) it has to re-encode the audio real-time which introduces delay. And keep in mind ONLY a very select few games are in Atmos.

It's good to know that connecting the Series X directly to the soundbar works just fine and Atmos content will play as intended with no delay. However, this causes a loss in other features such as VRR, 120 Hz and more due to the soundbar not supporting all HDMI 2.1 features.

We understand that you want to do the setup with the console connected directly to the TV, as should be intended. We hope that the information we provided is helpful.

If you have any other questions or concerns, please let us know.

We will be glad to follow up and help you.

Sincerely,



Moderator

Microsoft Community

Hey so I will say, I have tested this with an HT-7000 as well as an LG S95QR, and the issue with centre channel audio/subwoofer not working is an issue exclusively with the Samsung soundbars.

I have an LG G2 OLED, and it’s e-Arc port might have changed if you have say a C1 or CX, but I have no issues with lipsync/audio delay on these TV’s when the tv settings, Xbox and soundbar settings are correct (lag is indistinguishable from 7.1 uncompressed). Sometimes it is a result of the TV though and it’s e-Arc port/processing, so the Sharc V2 by ThenAudio is a device that you would have to add if your still experiencing audio delay issues.

First thing of order though is getting a viable Atmos soundbar for Atmos gaming, which the Samsungs at the moment are not. From My understanding, there are different “types” of Dolby Atmos, just like there are different types of Dolby Vision (such as Low Latency Dolby Vision/LLDV, and regular Dolby Vision). The Q930B doesn’t support every Atmos format.

Last years Samsung soundbars had the same issue. They could use Dolby MAT (Blue Ray version of Dolby Atmos), and it wasn’t until the 2022 soundbars that they fixed this. Now, this years soundbars don’t support LPCM Atmos, or Dolby Mat 2.0. You can see this issue actually present on the soundbar, if you go into a non-Atmos game on your Xbox (when set to Dolby Atmos for Home Theatre), and you check the information on the soundbar it displays as “Multi-Channel PCM” rather than “Dolby Audio”. It’s an issue with the soundbars not supporting enough audio formats essentially, and it downconverts it to another channel, causing issues.