Adaptive transform acoustic coding (ATRAC). A method of digital compression of audio signals used in the MD (MiniDisc) format. ATRAC ignores sounds out of the range of human hearing to eliminate about 80% of the data in a digital audio signal.
Addressability. The ability of a cable system to individually control its set-top boxes, allowing the cable operator to enable or disable reception of channels for individual customers instantaneously from the headend.
ADSL (asymmetrical digital subscriber line). A system of compression and transmission that allows broadband signals up to 6 Mb/s to be carried over twisted pair copper wire for rela tively short distances.
Advanced television (ATV). Television technologies that offer improvement ...