MP3 goes surround sound

The inventors of the file format MP3 have taken the format to a new level. MP3s can now have surround sound. Germany's Fraunhofer Institute for Integrated Circuits (Fraunhofer IIS) and France's Thomson SA have added two new elements to MP3 Surround demonstration software: MP3 SX (MP3 Stereo eXtended), which enhances MP3 stereo files for multichannel playback; and Ensonido, which provides portable MP3 Surround sound using stereo headphones

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