Install for Dolby Atmos Support
Dolby Atmos support should be on board your Galaxy Note 8's Android Pie update.
Samsung launched Dolby Atmos support all the way back in early 2018 on the Galaxy S9 and Galaxy S9+. Since then, the feature's rolled out to several Galaxy mid-range Galaxy devices.
It's finally the Galaxy Note 8's turn as Samsung's rolled out support with the arrival of Android Pie.
The Galaxy Note 8 doesn't have stereo speakers which means the device only gets support for wired and Bluetooth audio. That said, you should still notice louder, improved audio while running Android Pie.
Samsung's update also includes Movie, Music, and Voice modes which will help to improve audio in certain situations.