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So recently having picked up an xbox one X I've found its got a couple extra audio out options.
Brief overview is I connect all my devices (xbox, blu ray player and set top box) to my Onkyo 5.1 a/v receiver, then have one hdmi out from the a/v receiver to the tv.
The audio out options I have on the xbox are pcm or bitstream.
If I select pcm which was what I always used to have it set to on my old xbox one (cos thats all it had really), the Onkyo receiver I would need to set to 'multichannel', and that appears to give me 5.1 surround.
When doing pcm from the xbox, the only options I have on the receiver are multi channel, direct, stereo and some other ones like plii surround sensation etc.
However if I select bitstream on the xbox, I then have two more choices to select, either dolby digital or DTS.
If I select either dolby or dts, then the receiver automatically switches to either dolby or dts and the dolby or dts light comes on, on the onkyos screen (instead of multi-channel). I havent tested yet but I presume either dolby or dts would be 5.1 surround naturally.
Just like they would light up if I was to play a blu ray through my blu ray player. Receiver automatically switches from dolby hd or dts-hd depending on the film.
So whats the deal? Can someone explain whats happening? My very limited knowledge is that either the xbox will 'master' (unsure of the correct term) and send out the audio and the onkyo will just play what it gets, or the xbox will just send out and leave the onkyo to master (is decode the right word?) whatever it receives?
Which is better if any? I like that the dolby or dts lights come on when I bitstream, but if pcm is better in general then I'll stick with that and just set the receiver to 'multi-channel' as that appears to give me 5.1 surround.