Senior HTF Member
- Apr 24, 1999
I like to think I've been pretty well-versed in sound for more than 30 years, but Atmos just baffles me. I have tons of questions about how it works but here I'll just ask why on some services it works on some devices but not others. I thought the Atmos data was already in the Dolby Digital Plus signal, so why would some devices only get 5.1 Dolby Digital Plus from some services and not have the Atmos triggered? I know Dolby Digital Plus has to be supported, for example my LG TV only passes standard Dolby Digital and so I know there's no way of getting Atmos from that. But for example my Chromecast gets Dolby Atmos from Netflix which is delivered via Dolby Digital Plus, yet my Roku Stick only gets 5.1 DD+ on the same material. Why would a Dolby Digital Plus signal even exist without the Atmos data included? If the receiver doesn't support Atmos, it already falls back on the core track.