[Home Theater Network] Mixers can use this interface to mix Dolby Atmos movies. The yellow dot in the lower right corner represents a sound object that can move in the auditory space, such as a gunshot or a woman's scream.
When we talk about Dolby Atmos®, we refer to object-based audio. You might think: "I don't care about the technical details. The sound is the sound, and I only want my movie to have a good sound."
This is understandable. What's important is that the Dolby Atmos sounds really great. Dolby's panoramic sounds of shocking flow sounds bring amazing richness and depth. You will feel that you are really in the story of the film, the sound comes from all directions, including above the head. And, no matter where you enjoy the Dolby Atmos, you can get the experience – whether it's in a movie theater with dozens of speakers, in a living room with only seven speakers, or by connecting Dolby Atmos Headphones for mobile devices.
However, if you want to understand why Dolby Atmos is so flexible and adaptable to different environments, it's a good idea to take a look at object-based audio to see how it works better than traditional channel-based sound.
Limitations of channel-based audio
There is no doubt that channel-based audio can create superior sound. However, this format is fundamentally limited because it can only be played back through a specific type of speaker arrangement. After the system is expanded, this format will not provide a more complete and richer sound due to the lack of relevant necessary information.
For example, if a movie is a 5.1-channel mix, the information it has can only be played back through five speakers placed in a specific location and a subwoofer. In this case, it doesn't make sense to add more speakers, because the 5.1-channel mix doesn't know what to do with these extra speakers. If the speakers are not placed in the "right" position, the movie will sound a bit wrong.
Dolby Atmos is object-based and therefore more adaptable because it is not subject to a specific number of speakers. Not only that, the object-based nature of Dolby Atmos also gives the soundtrack a lot of data about the sound in the movie scene.
In Dolby Atmos, every sound in a movie scene—such as a gunshot or a woman's scream—can become an object. Filmmakers can specify exactly where sound objects should be generated and how they should move.
Adaptability of Dolby Panoramic Sound
All of this detail can make the Dolby Atmos sound track incredibly adaptable – from a large studio that can accommodate hundreds of moviegoers to a mobile device that can be listened to by a person with headphones.
In addition, these detailed data give you a range of options when setting up your home theater. You can initially enjoy a superb sound experience with five small Dolby panoramic sound systems with five speakers placed in the lug position and two speakers that provide the top sound. In the future, if you can afford to set up a home theater system with up to 24 speakers placed in a single position and 10 top speakers, Dolby Atmos's content can be perfectly applied to all of these speakers.
You don't have to set up different versions of the movie for these different home theater settings. Any Dolby Atmosphere mix on Blu-ray Disc or streaming video contains all the information you need for small and large home theater systems.
Moreover, you don't have to put the speakers in a specific position. If your room is a special shape, you can put the speaker in a place that is right for the room. The Dolby Atmos system is able to determine the best way to use these speakers.
I know that entertainment enthusiasts are most concerned about how the Dolby Atmos sounds, and I believe that they will be impressed after experiencing the Dolby Atmos. In addition, it's gratifying to note that this “sounding†great format adapts to the development and changes of home theater and makes it even more effective. This is also why object-based audio is critical.
Author: study audio technology Dolby Laboratories Senior Director Brett Crockett
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