AAC

Advanced Audio Coding is a digital audio coding system that delivers lossy compression offering about 25 percent efficiency improvement over popular MP3 coding at similar bit rates. However this performance was then topped by aacPlus, also known as High Efficiency AAC (HE-AAC). It is included in MPEG-4 and delivers ‘CD quality’ stereo at 48 kb/s and 5.1 surround sound at 128 kb/s. HE-AAC is also adopted in DAB+ and Digital Radio Mondiale as well as DVB-H and ATSC-M/H mobile applications.