Coding Technologies

Coding Technologies AB was Swedish technology company that pioneered the use of Spectral Band Replication in Advanced Audio Coding. Its MPEG 2 AAC-derived codec was called AACplus, and was submitted to MPEG for standardization. The codec would become the MPEG-4 HE-AAC profile. XM Radio used AACplus for their streams. AACplus with Parametric stereo, called Extended AACplus, would become MPEG-4 HE-AACv2. Coding Technologies was acquired by Dolby Laboratories in 2007 for $250 million in cash. [1]