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digital audio tape


Sinonimi: DAT

A digital tape recording of sound; SYN. DAT.
A magnetic tape storage medium for recording digitally encoded audio information. Acronym: DAT.
(DAT) Digitally recorded audio tape produced in cassettes that can carry two hours of sound on each side and are about half the size of standard cassettes. DAT players/recorders were developed 1987 but not marketed in the UK until 1989. Prerecorded cassettes are copy-protected. The first DAT for computer data was introduced 1988.
DAT machines are constructed like videocassette 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, it can be programmed to skip a particular track and repeat another. The music industry delayed releasing prerecorded 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 prerecorded compact disc or DAT. DAT is mainly used in recording studios for making master tapes. The system was developed by Sony.
By 1990, DATs for computer data had been developed to a capacity of around 2.5 gigabytes per tape, achieved by using helical scan recording (in which the tape covers some 90% of the total head area of the rotating drum). This enables data from the tape to be read over 200 times faster than it can be written. Any file can be located within 60 seconds.

1. digitalna audio traka

ženski rodračunari

Traka velikog kapaciteta koja se na računarima najčešće koristi za pravljenje sigurnosnih kopija podataka. Može se odnositi i na uređaj koji čita takve trake.

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