Better Audio

ATSC 3.0 Audio AC-4

So far, we talked about better services and video. What about Audio?
ATSC 3.0 will use a new audio codec (here in the USA...Dolby AC-4) that will send ultra-high quality immersive audio. Today's sound is assigned to be delivered out of speakers at fixed locations. We mostly refer this to surround sound or 5.1.

Immersive audio is basically data that describes the audio like where in the room it is coming from (described as 7.1.4).

Another change is audio objects vs. channels. This will allow you to control the audio content of certain aspects of the broadcast (personalization). One example is to be able to mute some of the commentators or even better, you can switch to the local commentator of your team...I wonder if anybody will provide Swiss commentators???
As ATSC 3.0 is a hybrid delivery standard, it is possible that only the main audio is broadcasted over the air and the alternative audio (Swiss commentator) is delivered over broadband (e.g. via URL through your cable provider).

Another scenario might be a visually-impaired viewer looking to “turn up” an object that is providing some audio detail describing the television screen (known today as descriptive video).

ATSC 3.0 enhances the user experience by vastly increasing a viewer’s control over audio content.

Much more on the audio front at: