a. 16:9 aspect ratio, high definition, widescreen television being proposed in Japan. b) A term originally used for a transmission scheme developed by NHK specifically for DBS transmission of HDTV. MUSE has since been extended to a family of ATV transmission schemes. MUSE, as it was originally developed, is a form of MAC. Recent versions of MUSE (MUSE- and MUSE-9) are said to be receiver-compatible and, as such, cannot employ MAC techniques.

The sub-Nyquist part of the name indicates that MUSE is a sub-sampling system and, as such, is subject to motion artifacts. While it is one of the oldest ATV transmission schemes still considered viable, MUSE is only four years old.