Dynamic Resolution Adaptation (DRA) was an audio encoding specification developed by DigiRise Technology. It had been selected as the Chinese national audio coding standard, and declared suitable for China Multimedia Mobile Broadcasting and DVB-H as addressed in the International Journal of Digital Multimedia Broadcasting.
The format was recognised by the CTA EDID Timing Extension Block standard (used by many A/V interfaces) and the Blu-ray Disc specification, introduced with Blu-ray Disc 2.3. There were no discs released with DRA audio, though there were expected to be such discs for the Chinese market but did not happen.
External links
- Yu-Li You and Wenhua Ma, "DRA Audio Coding Standard: An Overview". Fa-Long Luo (ed.), Mobile Multimedia Broadcasting Standards, Springer US, 2009. ISBN 978-0-387-78262-1 (Print), ISBN 978-0-387-78263-8 (Online).
References
China selects DRA as national audio coding standard Archived 2009-04-24 at the Wayback Machine (Interfax, 07:33 GMT, Apr 20, 2009) http://www.interfax.com/4/488956/news.aspx ↩
Boxall, Andy (27 March 2009). "Blu-ray Development Set to Increase in China". Blurayfreak. Archived from the original on April 4, 2009. Retrieved May 31, 2017. https://web.archive.org/web/20090404120912/http://www.blurayfreak.com/2009/03/bluray-development-set-to-increase-in-china.html ↩