AC-3 audio compression standard (also known as Dolby Digital and A/52) was released by Dolby Laboratories in 1991. Enhanced AC3 (EAC3) was published in 2005 as a non-backwards compatible extension to AC3 bitstream syntax with additional coding tools and features. This article is a high level overview of AC3 and EAC3 bitstream syntax. Also in … Continue reading The structure of AC3 and EAC3 audio