xHE-AAC Demo

xHE-AAC is the latest member of the MPEG AAC audio codec family. It is natively supported on the latest Apple, Android and Amazon products, and Fraunhofer’s xHE-AAC implementation has been licensed to Microsoft. The codec enables consumers to enjoy uninterrupted streaming of all types of content – such as movies, music, audiobooks or podcasts – with stereo services at bit rates ranging from 12 kbit/s to 500 kbit/s and the ability to switch between them seamlessly. The mandatory MPEG-D DRC metadata provides loudness and dynamic range control so that xHE-AAC can play content at a consistent volume and deliver the best possible user experience in any listening environment, on any device. Latest news on xHE-AAC

Bit Rate Switching


Dramatic Film - Netflix "Meridian"

  • Stereo version
  • Property of Netflix, used with permission
  • Listening tip: listen for less roughness on "So these guys..." at intro and "Mickey Cohen...", improved transients and bandwidth on paper shuffling at beginning and rain at end.

Loudness and Dynamic Range Control

Animated Film - Blender "Sintel"

  • Stereo version
  • Excerpts edited so that loud and soft scenes are adjacent
  • CC BY 3.0 © Copyright Blender Foundation | durian.blender.org

To test xHE-AAC even more, Fraunhofer has added a new page to its website to illustrate the dramatic improvements and distinct benefits that xHE-AAC offers to consumers and service providers alike over previous AAC generations such as HE-AAC. The page allows visitors to hear audio samples of film and music content encoded and decoded at several bit rates with both xHE-AAC and the legacy HE-AAC codec. Access it here.