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5.1 Audio from Stereo Sources
Deep tech question. I have an XG1v4 DVR. When I play content from third party apps like YouTube and Spotify, which only do stereo, the XG1v4 output is 5.1. When set to Expert mode, I get 5.1 PCM. When set to Auto Detect, the output is DD+ 5.1.
So, what is Xfinity doing that takes a 2.0 source and sends it as 5.1? Is there someone in tech support there who might be able to explain this?
XfinityAmandaB
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11 hours ago
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BIslander
Problem Solver
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557 Messages
9 hours ago
@XfinityAmandaB Thanks for the reply.
Yes, expanding stereo to 5.1 is a feature of many sound systems. I guess the question is how Xfinity is doing the expansion. Is it using a tool like ProLogic or Dolby Surround? Is it duplicating the LR channels to the surrounds? Or, is it sending the stereo signal in a 5.1 wrapper where the other channels are silent?
Also, is there a way on the X1 to send stereo in stereo? I can change the audio output to PCM, but doing that means genuine 5.1 and Atmos content is downmixed to stereo. So, that's no good.
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