Ensonido is a real-time post processing algorithm that allows users to play back

MP3 Surround MP3 Surround is an extension of MP3 for multi-channel audio support including 5.1 surround sound. It was developed by Fraunhofer IIS in collaboration with Thomson and Agere Systems, and released in December 2004. MP3 Surround is backward comp ...

files in standard headphones. Ensonido was developed by the

Fraunhofer Society The Fraunhofer Society (german: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., lit=Fraunhofer Society for the Advancement of Applied Research) is a German research organization with 76institutes spread throughout Germany ...

. It simulates the natural reception of surround sound by the human ear, which usually receives tones from surrounding loudspeakers and from reflections and echoes of the listening room. The out-of-head localization achieved that way increases the listening comfort noticeably in contrast to conventional stereo headphone listening with its in-head localization of all sounds. In version 3.0 of the Fraunhofer IIS MP3 Surround Player, Ensonido is replaced with newer

mp3HD MPEG-1 Audio Layer III HD more commonly known and advertised by its abbreviation mp3HD is an audio compression codec developed by Technicolor formerly known as Thomson. It achieves lossless data compression, and is backwards compatible with the M ...

External links

all4mp3.com
Software, demos, information, and various mp3 resources
mp3surround.com
- Demo content, information and evaluation software
The Register news story mp3surrounded.com
- First Blog in the internet about MP3 Surround-MP3 Surround Samples Audio codecs Digital audio {{Sound-tech-stub