Samsung's One UI 6.1.1 adds an option to normalize and boost the dialogue volume in videos

With One UI 6.1.1, you can easily increase the volume of dialogue across your entire phone by going to Settings > Sounds and vibration > Sound quality and effects and toggling the new Boost dialogue option. This works whether you're using your phone's speakers or a connected headset, even if it's not a Samsung headset. However, if you're using Galaxy earbuds, the earbuds' effect settings will override the phone's settings. In this case, you'll need to go to the Galaxy Wearable app to adjust the audio settings.

Personally, I find the "Boost dialogue" option to be helpful in videos. However, in my testing it seems like it's not able to differentiate between a video and a song, as it definitely has an effect on my chosen equalizer settings within the Spotify and YouTube Music apps. Hopefully, a fix for this is on the way.

Another useful audio feature in One UI 6.1.1 is Loudness normalization. This feature helps prevent sudden changes in volume when you're listening to music. For example, if you switch to a song that's much louder or quieter than the previous one, One UI will adjust the volume to keep it consistent.

One UI 6.1.1 offers some handy features that could improve the user experience, especially when it comes to audio. These features may not be groundbreaking, but they could make a noticeable difference in how you use your phone for entertainment and communication.