We are a globally recognized innovator of sound, image, and voice technologies for cinemas, home theaters, PCs, mobile devices, and games.
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The Dolby Theatre
The Magic Inside Dolby
The Dolby Institute
Dolby in the Cinema
Dolby works with your favorite filmmakers and movie theaters to create a multidimensional cinema experience.
Find a Dolby Atmos Movie
The Dolby Cinema Experience
Dolby Surround 7.1
Dolby 3D at the Movies
Solutions for Distributors and Exhibitors
Dolby at Home
Transform your living room into a sophisticated home theater with amazing sound and true-to-life video quality.
Dolby Digital Plus
Home Theater Setup Guide
Speaker Setup Guide
Home Theater Products
Solutions for Broadcast Professionals
Dolby on the Go
Mobile devices with Dolby technologies dramatically improve your audio quality.
Drivers and Codecs
Solutions for Mobile and PC Professionals
Dolby at Work
Improve productivity by transforming the conference call into an in-person meeting experience with Dolby Voice and the Dolby Conference Phone.
Dolby Conference Phone
Partners and Professionals
Find Dolby solutions, services, and support that can help you create more engaging products, content, and entertainment experiences.
PC and Mobile
Experience up to 7.1 channels of stunning surround sound from a home theater, tablet, laptop, or smartphone featuring Dolby Digital Plus audio.
Because Dolby Digital Plus™ (E-AC-3) is an advanced surround sound audio technology designed for evolving media, you get consistent Dolby cinema-style audio across your content.
Dolby audio adds depth and power for realistic sound through your headphones and device speakers. You'll hear clearly, even in loud and busy environments.
Dolby Digital Plus is based on core Dolby Digital® technologies, the established standard for cinema, broadcast, and home theater surround sound.
Get the interactive BonusView™ and BD-Live™ features on Blu-ray Disc™. Hear streamed director's commentary, alternate dialogue, or alternative language soundtracks.
Hear how Dolby Digital Plus enhances the flying fish scene in Life of Pi.
Enjoy vibrant, high-quality surround sound from all your favorite content with Dolby Digital Plus. Whether you're watching movies, TV shows, online videos, or concerts, Dolby Digital Plus ensures that you'll always get consistent audio quality.
Dolby Digital Plus is an audio technology based on Dolby Digital 5.1, the established standard for cinema, broadcast, and home theater surround sound.
Based on both psychoacoustic and cognitive models of audio perception, Dolby Digital Plus delivers HD-quality audio for streaming, on-demand, and downloaded content by using some of our most advanced algorithms. Dolby Digital Plus makes it possible to store and transmit high-quality digital sound to deliver the best audio quality possible on many different kinds of devices.
Equipment with Dolby Digital Plus will unlock its full feature set, including 5.1- and 7.1-channel capability (depending on the program).
If your system includes Dolby Digital, you'll still get 5.1-channel surround sound, with the highest-quality Dolby Digital signal possible. Because Dolby Digital Plus content is easily converted to a traditional Dolby Digital signal, you are assured of the best performance your equipment is capable of.
You can get the Dolby Digital Plus experience by purchasing home theater equipment, such as A/V receivers, Blu-ray™ players, or TVs with Dolby Digital Plus. You can also experience Dolby Digital Plus on a tablet or smartphone by purchasing one with preinstalled software. Check out the Amazon Kindle Fire tablet with Dolby Digital Plus.
Look for content encoded with Dolby Digital Plus; you can decode that amazing surround sound experience with Dolby Digital Plus home theater and mobile products.
You can find Dolby Digital Plus encoded content on Blu-ray Disc and from our partners, such as Netflix®, Vudu®, or Amazon Fire™ TV.
When incorporated into a mobile device, Dolby Digital Plus adds postprocessing technologies that dramatically improve your device's audio capabilities and your whole entertainment experience. Devices with Dolby Digital Plus have been specifically tuned so that even built-in speakers deliver natural, louder, distortion-free sound.
Changing the Sound of Mobile
Discover how Dolby enhances home theater components, PC, tablets, smartphones, and content.
IDC research shows that consumers aren't satisfied with their mobile device audio quality. Be among the first in market to meet this need.
Read the Paper
Discover the industry standard for all US HD broadcasts and DVDs.
Dolby Digital 5.1 Surround Sound
Dolby Digital Plus empowers content creators, developers, sound engineers, distributors, and device manufacturers to provide a cinema-like listening experience to audiences everywhere.
Dolby Digital Plus will help you tell your story the way you want, with the assurance that your audience will hear what you intended.
Dolby Digital Plus facilitates efficient distribution to the widest range of devices for broadcasters, operators, and OTT providers.
Manufacturers rely on Dolby Digital Plus so their users can experience the full emotional range of their entertainment anywhere.
Dolby Digital Plus is one of many technologies that deliver surround sound. But how does it compare to other technologies?
Dolby Digital Plus is the established standard for 5.1 channel surround sound on DVDs and HD broadcasts. It's also part of the Blu-ray Disc standard, so you can experience the clearest multichannel surround sound from your entertainment.
Multiple BonusView support for Blu-ray
Automatic stereo downmix
Support for mobile networks
Scalable for bandwidth-constrained applications
Data rates supported: mono-multichannel
Up to 18 Mbps
Log in to the Dolby Customer portal to find partner tools and documents.
Apply for a license to include Dolby technologies in your products.
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