I have a 5.1 system with a receiver, speakers and sub, in my living room, and i have connected my pc to my projector.

Current setup: PC > HDMI > hdmi switch & audio extractor

hdmi switch & audio extractor > HDMI (out) > Projector

&

hdmi switch & audio extractor > Optical > Resever

I can get audio to the spekers from the PC. But i can't get real 5.1 surround sound to work. I can't change the default format to 5.1 and in "configure speaker" only FR and FL work.

Do i need to buy a sound card and run optical all the way to the resever from my PC? And if i would need to buy a sound card would it have to have to be a surround sound sound card or is it just necessary that it has a optical port?

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1 Answer

Optical (TOSLINK) audio connections do not have enough bandwidth for uncompressed audio with more than two DVD-quality PCM channels. More channels are only possible with compressed audio formats like Dolby Digital or DTS (those are present on DVD and Blu-ray).

You could, maybe (and that’s a big maybe) get it to work using the Dolby Access app for Windows 10.

What you actually need is of course an HDMI-capable AV receiver. HDMI supports 2-8 channels of uncompressed audio in almost any quality.

HDMI audio sinks report supported audio configurations to the audio source. That’s why Windows is only showing stereo.

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