Roland BR-864 Section, Synchronizing with MIDI devices, What are drop and non-dropformats?

Synchronizing with MIDI devices

fig.05-405d

4.Press CURSOR [ ] [ ] to select “Sync Gen,” and

turn the TIME/VALUE dial to set the sync generator.

fig.05-406d

OFF: Synchronization signals will not be output.

MTC: MIDI Time Code will be transmitted.

MCK: Sends the MIDI clock based on the tempo set with the Rhythm Guide (p. 90).

* If “OFF” or “MCK” is selected, proceed to step 6.

5.Press CURSOR [ ] [ ] to select “MTC Type,” and

turn the TIME/VALUE dial to set the MTC type.

fig.05-407d

Verify the specifications of your MIDI sequencer and set the MTC type on the BR-864.

30:30 frames per second non-drop format. This is used by audio devices such as analog tape recorders, and for NTSC format black and white video (used in Japan and the U.S.).

29N: 29.97 frames per second non-drop format. This is used for NTSC format color video (used in Japan and the U.S.).

29D: 29.97 frames per second drop format. This is used for NTSC format broadcast color video (used in Japan and the U.S.).

25:25 frame per second frame rate. This is used for SECAM or PAL format video, audio equipment, and film (used in Europe and elsewhere).

24:24 frame per second frame rate. This is used for video, audio devices, and film in the US.

6.Press [UTILITY] (or press [EXIT] repeatedly) to return to the Play screen.

*During updating, “Keep power on!” appears in the upper line of the display, while the lower line shows what is being processed.

7.Just as when you synchronize a MIDI sequencer using external MTC, when you use the rhythm guide, you can synchronize the MIDI sequencer using the external MIDI clock.

8.Get the MIDI song data ready for playback.

When the BR-864 begins playing, the MIDI sequencer will also begin playing in sync with it.

What are drop and non-drop formats?

There are two types of format used by NTSC video cassette recorders, non-drop and drop. With the non- drop format, the frames are continuous. On the other hand, in order to support NTSC color video, the drop format drops the first two frames of every minute excluding minutes 10, 20, 30, 40, and 50.

In most video and audio production, since formats with continuous frames are easier to deal with, non-drop is generally used. In contrast, in situations such as in broadcast, where the time code must match actual clock time, drop is used.

Section 5

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