Dolby® Digital Plus extends the capabilities of Dolby Digital, optimizing sound quality and efficiency for a richer, more compelling audio experience.
Delivers scalable sound, optimizing quality and efficiency for available bandwidth
Supports a wide range of existing and emerging home theater, broadcast, streamed content, and mobile applications
Provides up to 7.1 channels of surround sound for a more involving experience and dramatic special effects
Includes compatibility with millions of existing playback systems
Dolby Digital Plus is a versatile digital audio coding technology that extends the capabilities of Dolby Digital. Dolby Digital Plus delivers up to 7.1 channels of surround sound, with scalable sound delivery and a wide range of bit rates ensuring optimized sound quality and efficiency for the available bandwidth. These advances are just a few reasons why Dolby Digital Plus delivers a more enveloping audio experience for existing and emerging applications, including new digital broadcast TV formats, Internet-delivered audio, and high-definition video discs.
Dolby Digital Plus for Broadcast
By delivering increased efficiency that enables lower bit rates, support for up to 7.1 channels, and advanced services like bitstream mixing, Dolby Digital Plus gives broadcasters the flexibility they need to create a high-quality audio experience for existing and next-generation applications. Read more about Dolby Digital Plus for Broadcast.
Why Dolby
Dolby Digital Plus is the audio complement to today’s video compression technologies, such as H.264 (MPEG-4 AVC). Because Dolby Digital Plus offers up to 7.1 channels for existing and next-generation applications, broadcasters can now deliver more channels of surround sound over less bandwidth, providing a richer and more enveloping audio experience whether via HDTV, IPTV, cable, satellite, or terrestrial broadcast television.
Maintains high quality at more efficient bit rates
Enables interactive stream mixing of multichannel secondary audio, such as a director’s commentary, with the main theatrical soundtrack
Allows broadcasters to offer advanced services such as enhanced viewing options for the visually impaired
Integrates scalability that allows the bit rate to be configured for a specific broadcast system
Includes complete Dolby metadata support and backward compatibility with existing home theaters equipped with Dolby Digital audio