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Dolby Digital Plus Comes to Devices Faster

16 Apr, 2012 By: Chris Tribbey



Dolby Laboratories’ Digital Plus audio soon will be available to broadcasters and online content providers at half the data rate, thanks to new encoding techniques, the company announced.

Dolby Digital Plus 5.1 sound can now be delivered at 192 Kbps, half the data rate typically used by services today. Dolby says the solution allows the audio service to be enjoyed by more connections on more devices. Dolby aims to offer the new solution this summer.

“Our vision is to deliver an immersive, realistic viewing experience that is true to the creator’s vision, tailored for whatever compatible device is used for playback,” said Giles Baker, VP of broadcast for Dolby Laboratories. “With these latest coding breakthroughs and playback optimization in Dolby Digital Plus, we are enabling that vision and powering a new wave of service innovation.”

Broadcasters and online content providers typically deliver Dolby Digital 5.1 audio at an average data rate of 384 Kbps. By cutting that in half, Dolby says content providers can free up more space to deliver high-def channels added features such as 7.1 surround sound, multiple languages on pay TV services, and multiroom capability on IPTV systems.

Dolby also is releasing a development kit for content companies that uses the MPEG DASH (Dynamic Adaptive Streaming over HTTP) standard, a delivery format for streaming Internet content.

“Netflix welcomes the growing support for emerging online standards including MPEG DASH and the associated Common Encryption specification for ISO files,” said Mark Watson, director of streaming standards at Netflix. “These standards will enable continued efficient and high quality integration of over-the-top services like Netflix across a wide range of devices.”


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