I have a Yamaha RX-V6A receiver, which I am connecting to my PC via HDMI through the GeForce RTX 2070 graphics card.

My receiver is receiving the audio in PCM.

How can I send a Dolby Digital 5.1 sound in Dolby Digital DTS-HD Master audio to the receiver?

Are there settings within the GPU settings where I can output in Dolby Digital?

I'm in Windows Version 10.0.18363 Build 18363.

I had already set the “Spatial Sound” to 5.1 in Windows 10, for the output device for my TV.

I have a Blu Ray player in my PC.

I tried changing different audio tracks on a Blu Ray, but the receiver still says “PCM” for format. Including even if I select “DTS-HD” as one of the audio tracks on the Blu Ray, instead of LPCM.

Regardless of what content I play, whether it's a Blu Ray, or CD, or digital file, the receiver always says PCM.