Like most formats of videocassette, a DAT cassette may only be recorded and played in one direction, unlike an analog compact audio cassette, although many DAT recorders had the capability to record program numbers and IDs, which can be used to select an individual track like on a CD player.Īlthough intended as a replacement for analog audio compact cassettes, the format was never widely adopted by consumers because of its expense, as well as concerns from the music industry about unauthorized high-quality copies. If a comparable digital source is copied without returning to the analogue domain, then the DAT will produce an exact clone, unlike other digital media such as Digital Compact Cassette or non- Hi-MD MiniDisc, both of which use a lossy data reduction system. DAT can record at sampling rates equal to, as well as higher and lower than a CD (44.1, 48, or 32 kHz sampling rate respectively) at 16 bits quantization. The recording is digital rather than analog. In appearance it is similar to a Compact Cassette, using 3.81 mm / 0.15" (commonly referred to as 4 mm) magnetic tape enclosed in a protective shell, but is roughly half the size at 73 mm × 54 mm × 10.5 mm. Up to 120 or 180 minutes (consumer tapes on non-LP mode)ĭigital Audio Tape ( DAT or R-DAT) is a signal recording and playback medium developed by Sony and introduced in 1987. A 90-minute DAT cartridge, with a AAA battery (LR03) for size comparison
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