5.1 Dolby Test File

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Valorie Carlee

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Aug 4, 2024, 7:56:56 PM8/4/24

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Yourbest option is playing this 5.1.2 Dolby Atmos Test Tones MP4 video. Download it onto a USB flash drive and plug it into your TV or AirPlay it from an iOS device to a Roku Ultra or Apple TV 4K connected to your TV. If you AirPlay the video, check the Sonos app to confirm it is playing in Dolby Atmos:

That said, I can see where test tones could be helpful in making sure the rear and height channel volumes are set the way you want them. Not sure if setting volume levels this way would translating into better sound when all the channels are playing though.

I was thinking about that right after I posted. Good point. A test track still may not be terribly helpful since the Arc has a lot more amps and speakers in it then the channels it supports. Some channels split between woofers and tweeters.. And the issue could be amp, not speaker.

Not exactly sure what I expected from Beam/Atmos but somewhat disappointed.... Connected via eARC to latest LG OLED. Sonos App shows "Atmos Content" (Prime, Netflix Premium) connected. TruePlay calibrated. Use area is approx 20 by 14 w/sloping 19->12 foot ceilings, listening 10 foot front-center from Beam.

Another good test is the film Roma on Netflix. At around the 1:03:25 mark, you should hear the trees burning/crackling above you for the next couple of minutes. Be sure you are playing the original Spanish language audio track.

I recently tested the Beam gen2 Atmos setup, and I must say I had mixed emotions about it. I tried a few different methods to get the best demo and determine its capabilities. One approach I found effective was treating it like a 5.1 system, where I emphasized the different speakers (LF, RF, LR, RR, C, SW). This helped to create a more immersive experience.

I also experimented with specific known "Height" points in Atmos content. While the Sonos App indicated "Atmos Content" when connected to Prime and Netflix Premium through eARC on my LG OLED, I was somewhat disappointed with the overall result.

Maybe consider adding Era-300 speakers as surrounds to the Beam Gen2, they really do help provide immersive Atmos surround sound. Those Sonos surrounds, together with a Sub (gen3) really do sound fantastic in our Dining Room.

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I have not explored any options at this point, there are what look like PQ options in the code but it is not clear to me if they are really meant for TV interactions i.e. SoC embedded in TV, or also relevant to STB.

At present the player led is coming up purple and green - i.e. a colour space conversion is not happening somewhere, i.e. I think it is sending IPT422 though the standard YUV422 connection in player led, not sure on this one would need to look more.

Also note the Kodi side re-overlays the UI interface to get the final composite png with both elements, i.e. it is not a capture of what is being sent down the HDMI, can consider the case where there is metadata data (RPU) being sent to the TV - would need to capture from the TV Image to see the impact of that.

Content looks extremely close - at first blush - maybe something different in the banding but the content is well produced so hard to tell from this.

Edit: tried some other HLG HDR and the colours are quite a bit different.

I have tested YUV, IPT, and whatever is in that test pattern (maybe HLG?) and they all appear to work for me / have a different look on the same image data. Makes you wonder why the profile 8 captures were clearly in IPT

On the subject of p8 I saw something else odd just for p8 - sometimes it would send the OSD1 (UI) very dark to the point it cannot be read - even though the luminance feeding the DV control looked all the same (checked the dv debug logging), p7, p5 have all looked fine never seen that issue.

Would be amazing to have a menu option to toggle VS10: 1) SDR and HDR content, 2) SDR content only, 3) off. Activate on start/stop depending on 1 or 2. If possible, then hopefully can incorporate into mainline, the capability itself is worthwhile to have.

No difference playing p5 or p7 or p8 - (the p8 note was before this change - i see UI going dark sometimes - not sure why.) Fundamentally it is the same Engine does dv contents and does mapping to dv content - i.e. it was always on for dv doing the dv thing.

[Caveat on the sink min and max - most people do not have that on - not tested the impact here yet to see if needed - for me I think it is better on anyway - it was in my original tv-led build - removed to keep things to minimum footprint of change as not needed in that scenario]

Not done any Kodi UI coding and will be having less time to spend on this over the coming weeks [any dev wants to step in and implement - it is just changing the parameters listed here] - one reason I rushed this out yesterday wanted to get this out there for people to try first and some feedback, but I think a lot is possible over time.

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