I believe Dolby Surround Upmixing has been enabled when selecting the Atmos audio setting

Hi RomiDumitru,

*maybe* this "problem" is exactly how the Dolby Atmos App on Xbox One X works.

Dolby Atmos native content? perfect! Dolby Atmos playback.

No Dolby Atmos? the App upmix current audio track to Dolby Atmos (the headphones features works in this way).

I don't know if is intentional.

You can buy HDMI ARC converter boxes on Amazon that will enable HDMI-ARC on old sound systems, they are essentially dummy sound systems that pose as an ARC receiver then pass the audio to the sound system plugged in at the other end.

Be aware that HDMI-ARC is no different from optical, it only supports PCM 2.0 (stereo) Dolby 5.1 and DTS 5.1, thats all you get. If you desire HD audio formats or PCM 7.1 you need a 4K/HDR compatible sound system.

Dolby Atmos is buggy on Xbox because of the way the Xbox audio engine works, MS have an audio upmixer that merges the system UI sounds with audio streams but this does not play well when bitstreaming Atmos. Which on a technical level is handing off the audio
from Xbox to the sound system to decode so you can see why their upmixer causes all sorts of problems. There really should be a toggle in the audio settings to disable the upmixer (thereby muting system audio) when using Atmos or bitstreaming Blu-ray/Movie/TV
audio in general.

Atmos is not designed for gaming in short.

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today Emergence

You can leave the setting ON. If you leave it ON this is what the feature does:

"this upmixer was made to be compatible with traditional channel-based and Dolby speaker systems. What the Dolby upmixer does is expands the audio of channel-based content (includes Native Streaming, 5.1, and 7.1 content) for playback through a Dolby Atmos system. This upmixer allows for a more spacious audio ambiance. Dolby states, “This new technology will process and upmix channel-based content to as many as 17 speaker locations at listener level and to 10 Dolby Atmos-enabled or overhead speakers.”"

Source: https://www.truaudio.com/news/2020/02/11/dolby-...

** This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Perfect! Thank you very much! Last question. Does the Dolby Atmos app for Xbox upscale/upmix all audio for headphones?

Apparently dolby atmos will only transfer through hdmi and not optical,i was just wondering whether it is something to do with hdr

Do you have "let receiver decode audio" enabled in Settings > Disc & Blu Ray > Blu ray?

And after that go to Settings > Display & Sound and go, under HDMI audio, to Bitstream format and select "Dolby Atmos for home theater".

After doing this the blue light for Dolby Atmos should be lit on your receiver when it is decoding Dolby Atmos input.