ATRAC is an audio compression format by Sony and used in the minidisc format It works by throwing away the sound your ears can't hear, therefore reducing the amount of data needed to be stored. Gb HardDisc Mass Storage device. Allows recording and playback direct from the machine
Adaptive Transform Acoustic Coding, a method to compress audio data and used in the MiniDisc.
Sony's audio codec used by MiniDisc players. It involves dropping all frequencies below and above the human hearing range (20Hz to 20KHz).