Dolby Atmos is a new audio format for creating and playing back multichannel movie soundtracks. It was developed to give movie sound a more three-dimensional effect. Traditional 5.1- and 7.1-channel surround setups deliver captivating sound using speakers placed all around your room. Dolby Atmos takes this to another level with speakers to create a "height" layer of sound above the listener.
This overhead sound extends the height of your system's soundstage while also allowing for some very cool effects. Imagine hearing an airplane flying over your head – not just in front of and behind you. With a Dolby Atmos setup, your ears can locate sounds with pinpoint accuracy, for a more realistic and enveloping listening experience to complement the visual excitement on your TV.
So. Now we know Dolby Atmos is a new sound format. We know it incorporates overhead effects in addition to a traditional 5.1 or 7.1 surround effects.