Subjective Audio Quality Test — MPEG HE-AAC V2

In 2005 I designed and supervised a subjective audio quality test of the MPEG-4 High Efficiency Advance Audio Coding Version 2 technology. This technology is perhaps the most widely deployed MPEG Audio technology in that it is present in more than 8 billion smart phones worldwide. It delivers entertainment quality audio at bitrates as low as 32 kb/s for a stereo signal. The report, N7137 Listening Test Report on HE-AAC V2, is available at