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Entries found for search: half track

half track : (1) A recording format in which two parallel tracks are recorded in a single pass on a tape, each track using slightly less than half of the tape width. On some machines, a very narrow track with SMPTE or other synchronizing information is recorded and reproduced in the guard band. In this case, the data is frequency-modulated onto a very high-frequency tone in order to minimize crosstalk or bleeding into the audio. (2) A tape machine which records on half of the tape width only. This allows the tape to be inverted at the end of its play time, doubling the recording time for a given length of tape. See also two-track, four-track."

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