Open Reel Audiotape
From Just Solve the File Format Problem
Open Reel Audiotape is magnetic tape for audio recording which comes on reels which need to be mounted by hand on a tape player/recorder, rather than being encapsulated in a cassette. A number of different formats have been used, with different numbers of tracks and different speeds, monaural or stereo. A difference in stereo formats is whether the two audio tracks are synchronized side-by-side (to be read by two parallel heads) or slightly out of sync because the heads are adjacent lengthways and one is pointing at a spot on the tape further down than the other.
