Film Heritage Foundation - Digital Audio Tape (DAT) is a recordable digital audio format that was introduced in 1987 by Sony and looks similar to compact cassettes, but is smaller in size.
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![Fig5. 4-mm digital audio tape (DAT) used for image backup and archiving. | Download Scientific Diagram Fig5. 4-mm digital audio tape (DAT) used for image backup and archiving. | Download Scientific Diagram](https://www.researchgate.net/publication/21600489/figure/fig2/AS:341664481726472@1458470568642/Fig5-4-mm-digital-audio-tape-DAT-used-for-image-backup-and-archiving.png)