NT (sometimes marketed as Scoopman) was a digital magnetic tape cassette format for voice dictation, introduced by Sony in 1992.
The cassettes themselves were very small, possibly the smallest cassette tapes every produced, but were still constructed of 21 separate parts. They could record up to 120 minutes (NTC-60, -90, and -120 tapes were available) on 2.5mm metal tape, using helical scanning.
Sony introduced the NT-1 recorder in 1992, and the NT-2 recorder with electronic controls in 1996.
Sources / Resources
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