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Timecode A User's Guide, 3rd Edition by J. Ratcliff

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Chapter 3The timecode word

As this edition went to press, the EBU/SMPTE Task Force for Harmonized Standards for the Exchange of Programme Material as Bitstreams issued its final report. It identified the following requirements regarding timecode:

Timecode standard should be the revised SMPTE12M (still under revision at this time).

The original quadruplex cue track

When practical videotape recorders were first being developed by the Ampex Corporation, a narrow-bandwidth, voice-quality audio track was incorporated onto the then current 2-inch VTRs in addition to the high-quality audio track. Although designed principally to record such material as talkback, the bandwidth of this longitudinal track allowed a 2400 baud (bits/second) digital signal ...

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