digital audio tape

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Digitally recorded audio tape produced in cassettes that can carry up to two hours of sound on each side and are about half the size of standard cassettes. DAT players/recorders were developed in 1987. Pre-recorded cassettes are copy-protected.

The first DAT for computer data was introduced in 1988.

DAT machines are constructed like video cassette recorders (though they use metal audio tape), with a movable playback head, the tape winding in a spiral around a rotating drum. The tape can also carry additional information; for example, a time code for instant location of any point on the track. The music industry delayed releasing pre-recorded DAT cassettes because of fears of bootlegging, but a system has now been internationally agreed whereby it is not possible to make more than one copy of any pre-recorded compact disc or DAT. DAT is mainly used in recording studios for making master tapes. The system was developed by Sony.

The red disc, set towards the hoist, recalls the fight for independence. Green represents Islam, fertility, and the country's youth. Effective date: 25 January 1972. >>