Originally Posted by Bghead8che
I am confused about the audio output options and sending out uncompressed sound. My understanding is that the Shield can send out an uncompressed Atmos or DTS-X signal while the Apple TV converts the audio signal to PCM.
1, The correct term is not uncompressed but it is "undecoded". Since neither the Shield, or ATV4 has an Atmos/DTSx decoder they need to pass the signal "bitstreamed" without any manipulation. This is called "pass through".
My question is what apps send out an uncompressed audio signal? I would assume Amazon, Hulu, Netflix and others send out a PCM version of Atmos and other audio formats.
All of those use compressed Dolby Digital + codecs which can carry the metadata of Atmos in the case of Netflix, and Amazon. Both the Shield and ATV4 can decode DD+ and it will convert it to PCM, however Atmos will be lost in the process. Again use "pass through" and have your AV receiver to do the decoding provided that it has Atmos decoding capability. If Atmos is not a priority than it won't matter where the decoding takes place.
Put another way, how do you take advantage of the Shield's ability to send out uncompressed audio bitrates? Lastly, what does it mean by "pass-through" in regards to audio?
I'd really appreciate some help with this!
See A1 for pass through, and that is what you need to get pure source direct sound to your AV receiver so it can decode it directly. Keep in mind that the Shield needs apps to do anything, since it doesn't even have a native file browser system.
In short both players can do Atmos via the popular streaming platforms, but via Dolby Digital + only, since that is the codec being used on all streaming platforms currently, the Shield can play back via apps like Plex, Kodi MRMc, local files of your own that has Dolby True HD , DTS HD MA, Atmos and DTSX, if those apps set up correctly to "pass through" those signals bitstream via HDMI connection only.