Gilderfluke&Co 16 Bit CD-Quality Digital Audio Systems - Manual (Page 55)

- SMPTE T RIGGER M ENU -
SMPTE (pronounced ÒSIMP-TÒ) is a time code that was developed by the Society of Motion Picture and
Television Electronics (SMPTE) for use in audio, film, and television production. It is normally recorded on
a spare audio track on the medium being used (audio tape, video tape, or film), and then used to syn-
chronize various pieces of compatible equipment together. As an industry standard, virtually every
audio, video or film studio will have the equipment to lay down a SMPTE time code track.
SMPTE is usually recorded at 30 frames per second 28 . What this means is that 30 (or 24 or 25) times
each second a number is recorded on the tape or film. This number represents the hours, seconds, min-
utes and frame (00:00:00.00) represented by this particular little stretch of medium. Since each little
stretch is represented by a unique number, SMPTE is known as an ÔabsoluteÕ time code. No matter where
the tape is, the AB/DR-3000 will instantly evaluate the numbers it gets from the SMPTE time code.
This menu is used to set the points in the incoming SMPTE time code the AB/DR-3000 will trigger vari-
ous spiels. It is available only if you have selected SMPTE In for the repeater.
-Sixteen Bit Digital Audio System rev 1.19 copyright 1996 Gilderfluke & Co. DCM-
- card __0 SMPTE Trigger Menu -
01) 01:02:03.04 __5 left | 02) 02:03:04.05 __6 left | 03) 03:04:05.06 nxt both
04) 03:03:04.05 __6 left | 05) ____________________ | 06) ____________________
07) ____________________ | 08) ____________________ | 09) ____________________
10) ____________________ | 11) ____________________ | 12) ____________________
13) ____________________ | 14) ____________________ | 15) ____________________
16) ____________________ | 17) ____________________ | 18) ____________________
19) ____________________ | 20) ____________________ | 21) ____________________
22) ____________________ | 23) ____________________ | 24) ____________________
25) ____________________ | 26) ____________________ | 27) ____________________
28) ____________________ | 29) ____________________ | 30) ____________________
31) ____________________ | 32) ____________________ | 33) ____________________
34) ____________________ | 35) ____________________ | 36) ____________________
37) ____________________ | 38) ____________________ | 39) ____________________
40) ____________________ | 41) ____________________ | 42) ____________________
43) ____________________ | 44) ____________________ | 45) ____________________
46) ____________________ | 47) ____________________ | 48) ____________________
a) alter entry m) more.... o) reload defaults X) eXit
please enter command-
For each of the forty-eight entries in the table, you can enter the SMPTE HOUR, MINUTE, SECOND,
and FRAME where you want the AB/DR-3000 to trigger a spiel.
You can tell the AB/DR-3000 a specific spiel to play (shown by the spiel number), or simply to play
the next spiel in line (shown by a ÔnxtÕ) 29 . If a mono ROM set has been installed, you can direct the spiel
to either the left, right or both outputs. Stereo spiels are always routed to both outputs.
The SMPTE input on the AB/DR-3000s isnÕt as ÔpickyÕ as the readers on our Animation Control Systems.
It doesnÕt require a number of consecutive good frames of data before it believes the SMPTE it receives.
It should accept SMPTE at 24, 25, 30 or 29.97 FPS. All you need to do is NOT schedule any starts on
frames that donÕt exist in the incoming SMPTE. i.e.: If you are using SMPTE at 25 FPS, donÕt try to trigger
sounds on the 26th frame. The AB/DR-3000Õs SMPTE input should follow SMPTE with a speed variation of
approximately 25% from 30 FPS.
The AB/DR-3000s check for any spiels they might need to trigger one second ahead of the SMPTE
time they are receiving. If one is found then they use the incoming SMPTE frame number to trigger the
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28 Twenty-five frames per second is used in Europe and places where this is the normal television fre-
quency, and twenty-four frames per second is occasionally used in film production.
29 If the ROM set is mono, and the LEFT/RIGHT SPLIT has been set, then the left channel will only play
spiel numbers up to the split, and the right channel will play only spiels over the split.