JLCooper Electronics MixMate, Руководство пользователя

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9
Chapter 4 Setting Up for Sync
CHOOSING SYNC TYPE
MixMate has available a wide array of synchronization options.This sec-
tion is included to aid you in your selection. Remember that once you com-
mit to a mode of syncing, you must stay in that mode of sync until the pro-
ject you are working on is finished. You cannot stripe the tape with FSK
and then expect
MixMate to generate MTC, nor can you enter fader
moves with respect to MIDI sync and expect the same moves to make
sense when locked to SMPTE.
SMPTE was developed in the 1960's as a way to uniquely number each
frame of a video tape for the purposes of editing. On audio tape SMPTE
consists of an audio tone that shifts its phase in a special way called "bi-
phase" to encode binary data. This tone is a continuous,"up-counting"
data stream representing hours, minutes, seconds, and frames.
The frame rate may be either 24 frames/second (used for 35mm film), 25
(European video), 30 (general purpose tape sync), or 30 drop-frame (U.S.
video).
MixMate will slave ("lock to") ALL formats of SMPTE. In addition, Mix-
Mate (Normal) will stripe ALL formats of SMPTE starting at 00:59:45:00.
MixMate PLUS will stripe all formats of SMPTE starting at any user-
selected SMPTE time.
If you choose to use
MixMate in SMPTE mode, all the fader moves you
make will be remembered with respect to hours:min:sec:frames.
While MixMate is reading SMPTE, you may elect to output MTC (MIDI
Time Code).
MTC is a recent addition to the MIDI spec. MTC is merely a MIDI rep-
resentation of SMPTE, that is, a way of sending hours:min:sec:frames on a
MIDI cable. It is required to drive many of the new post-production orient-
ed software packages,including Q-Sheet™ by DigiDesign, Auricle II™ by
Auricle Control Systems, and CUE™ by Opcode.
MTC IS NOT MIDI SYNC! MTC IS NOT SONG POINTER! At the time
of printing this manual, MOST CONVENTIONAL SEQUENCERS OR
DRUM MACHINES CANNOT READ MTC. However, this situation may
change in the near future.
CHOOSE SMPTE: IF YOU ARE WORKING IN A VIDEO POST-
PRODUCTION
ENVIRONMENT,
IF YOU MUST HAVE A SOURCE OF MTC
IF YOU WANT TO LOCK MIXMATE TO AN EXIST-
smpte
mtc