Dynamic Resolution Adaptation

{{short description|Audio codec standard}}

Dynamic Resolution Adaptation (DRA) was an audio encoding specification developed by DigiRise Technology. It had been selected as the Chinese national audio coding standard,[http://www.interfax.com/4/488956/news.aspx China selects DRA as national audio coding standard] {{Webarchive|url=https://web.archive.org/web/20090424065730/http://www.interfax.com/4/488956/news.aspx |date=2009-04-24 }} (Interfax, 07:33 GMT, Apr 20, 2009) 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 {{Abbr|A/V|Audio/Video, Audiovisual e.g. HDMI}} interfaces) and the Blu-ray Disc specification, introduced with Blu-ray Disc 2.3.{{Cite web |first=Andy |last=Boxall |date=27 March 2009 |title=Blu-ray Development Set to Increase in China |url=http://www.blurayfreak.com/2009/03/bluray-development-set-to-increase-in-china.html |archiveurl=https://web.archive.org/web/20090404120912/http://www.blurayfreak.com/2009/03/bluray-development-set-to-increase-in-china.html |archivedate=April 4, 2009 |publisher=Blurayfreak |access-date=May 31, 2017}} There were no discs released with DRA audio, though there were expected to be such discs for the Chinese market but did not happen.