mp3 SX is a program that allows users to upgrade mp3

MP3

MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is a patented digital audio encoding format using a form of lossy data compression...

 stereo files to MP3 Surround

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....

files.
mp3 SX analyzes the existing natural ambience of the stereo material and plays it back through the rear channels. The sound sources remain in the front channels, but are played back through the Left, Center and Right channel, providing a stable front image even for off-sweet-spot listening.
mp3 SX preserves the original stereo sound stage, creating additional surround envelopment, with only 15 kB/s additional information.

External links

• mp3surround.com - Demo content, information and evaluation software
• The Register news story
• Press Releases