![]() ![]() This can also carry Metadata-enhanced Audio Transmission (MAT), being audio objects aka Atmos. This is enough to carry 24-bit 192kHz 2-channel audio, or - to the point of this blog - a Dolby format called E-AC-3, which we know better as Dolby Digital Plus. It's still based on the same S/PDIF spec, but can theoretically support up to around 12Mbps. Cable length is a huge factor with Single mode, with reliability typically getting flaky beyond about 7-8m in a passive HDMI cable.Ĭommon Mode ARC is superior, but less common (excusing the pun) in terms of deployment. This enables support for 2.0 LPCM and "lossy" compressed surround formats including Dolby Digital and DTS 5.1, but nothing more. Single Mode ARC uses a single wire in the HDMI link, with performance limited to around 3Mbps. There's two types of ARC in HDMI Single Mode and Common Mode, but unfortunately we don't get informed as to which type any given product supports. HDMI Audio Return Channel (ARC) is based on the IEC 60958-1 specification, which is essentially the S/PDIF audio spec. Here is thoughts about atmos via arc:įirstly, a little background. Im not sure either, but I trust what my sony says.Im not 100% sure is that sound true dolby atmos or something else. So if I select Dolby, the TV will choose automatically the best option available (DD or DD+) if emission and soundbar supports it. DOLBY/BITSTREAM ( Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos) One possible firmware fix/solution is to change the Audio Menu from Current Selection: This erratic behaivour makes DD+ very unpleasant to use. ![]() When I go back to a DD+ emission then PCM is maintainted, not changing again to DD+ as was configured before, so I need to go to Audio Menu to configure DD+ again. My TV changes to PCM Audio (I consider that it should jump to DD, if available, because is better quality and was the main preference on the system before DD+) ![]() Problem start when I jump to another emission not supporting DD+: I configure DD+ on Audio Menu and everything is OK now. I select an emision with Dolby Digital Plus (Netflix or similar) My problem is related with Dolby Digital Plus, let me explain it on detail: I have a SAMSUNG UE55MU7005TXXC and a LG SJ9 (supporting DD+ and ATMOS and connected throught HDMI ARC). ![]()
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