If you are watching sporting events, Dolby AC-4 allows broadcasters to provide you with the option to select which audio stream you are listening to. What can be done with that extra 512 kbps? That increased coding efficiency, along with a maximum bit rate of 640 kbps, leaves 512 kbps to work with. Dolby AC-4 needs only 128 kbps for 5.1 audio. Dolby AC-3, which is used with ATSC 1.0, uses up to 384 kbps for 5.1 audio. ATSC stands for Advanced Television Systems Committee, an organization based in the US that standardized HDTV (ATSC 1.0) in the US 20 years ago and is working to standardize Ultra HDTV broadcasts as ATSC 3.0. OTA stands for Over The Air, as in what you can receive with an antenna. What are those new things and how will Dolby AC-4 elevate your audio experience?įirst, let’s define some acronyms, as they are part of the past and present of Dolby audio in broadcasting. Why would Dolby create AC-4? Dolby AC-3 is over 20 years old, and as a function of its age, it does not do new things well. In this post, the focus will be on Dolby’s audio technologies.
This is being done with Dolby AC-4 and Dolby Atmos for audio, and Dolby Vision for video.
#2016 dolby atmos demo tv#
Dolby, founded over 50 years ago as an audio company, is elevating the experience of watching movies and TV content through new technologies in audio and video, the latter of which is a relatively new area for the company’s offerings.
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