If your hardware or computer supports Dolby (usually you can see the Dolby label on the box of your hardware or PC), go to your computer or hardware manufacturer’s website accordingly to look for and download the latest Dolby audio driver. The Dolby audio drivers can only be downloaded from the hardware or computer’s OEM websites. Test it with games, stereo sources (YouTube etc.) & 5.1 demos.Note: – Instead of moving ahead to method given below, you can also choose to install Dolby audio as microsoft store product here. Also check 'Disable all sound effects' under the 'Enhancements' Tab. In Windows Sound options > Playback Tab > Right click Playback Device > Properties > Advanced Tab > Default Format 'DTS' or 'Dolby' options are here.

Right click Realtek HD Audio Manager icon next to clock in Taskbar > Sound Manager > Default Format 'DTS' or 'Dolby' options are here. Select Default Output format in one of two ways: Install the R281 driver – 'Setup.exe' file in main driver folder '0008-64bit_Win7_Win8_Win81_Win10_R281'. Allow Windows to run the patch – ignore any warnings.ĩ. Run the Patch file two times once to patch the file name 'RltkAPO.dll' and again to patch the file 'RltkAPO64.dll'. Copy unzipped Patch file & paste it in the unzipped R281 folder “WIN64”.Ĩ. If Windows Defender causes issues, then open Windows Defender & allow the file to be created.ħ. Restart PC (use DDU recommended option to restart).ĥ. Make sure to select audio drivers in the App.Ĥ.

Use Display Driver Uninstaller (DDU) to wipe old Realtek audio drivers. Restart PC in Safe Mode with no network connectivity.ģ. (Google alternate source if that doesn’t work).Ģ.

Not sure how this will work with other boards/codecs, so use at own risk - create restore point just in case. Thought I’d post a step by step on how I got the optical out of my Gigabyte B550 Aorus Pro AX motherboard (Realtek ALC1220-VB codec) working & sending a multi channel signal to amplifiers capable of decoding a compressed DTS Interactive/Dolby Digital Live in either 5.1 or 2 channel stereo.

Dolby digital audio driver