23—MIDI and Synchronization
294 www.Roland.com Roland VS-2000 Owner’s Manual
The VS-2000 can transmit this form of synchronization as a:
•
sync track
—a single, uneditable stream of MIDI clock/SPP synchronization data.
The VS-2000 can record a sync track comprised of captured MIDI clock and Song
Position Pointer data received from an external MIDI device. This lets an external
sequencer “teach” the VS-2000 a song’s tempo and time signature changes. The
data can then be sent back to the sequencer, slaving it to the
VS-2000. You can also construct a sync track for a new or already recorded project
using markers. In addition, the VS-2000 can use information you provide about an
already recorded project to create a new sync track. See Page 295.
•
tempo map
—an editable stream of MIDI clock/SPP synchronization data. Each
VS-2000 project has its own a tempo map in which you can view and edit a project’s
tempo and time signature changes. You can build a tempo map for a new or already
recorded project on the VS-2000 manually or by using markers, or convert an
existing sync track into a tempo map. For details, see Page 296.
The primary difference between a sync track and a tempo map in synchronization
operations is that a tempo map lets you see and edit tempo and time signature changes.
The SYNC PARAMETER Screen
1. To set up synchronization, hold down SHIFT and press F4 (UTIL).
2. If “SYNC” isn’t visible above F6, press PAGE until it is.
3. Press F6 (SYNC)—the SYNC PARAMETER screen appears.
4. Select the desired sync parameter and adjust its value.
A project’s tempo map also provides the basis for the Home screen’s track editing grid.
To synchronize an external MIDI device to the VS-2000 using a sync track or tempo
map, the device must recognize MIDI clock and Song Position Pointer messages.
The VS-2000 has an area of memory set aside for a sync track—it isn’t recorded on a
project track and doesn’t take up any recording tracks.
It’s important to understand that a sync track or a tempo map has no effect on the
speed at which a project plays back—this speed is determined by the project’s
sampling rate, or by received MTC/SMPTE time code. A sync track and tempo map
merely transmit tempo and time signature information that describes what’s going on
in a project to a MIDI device synchronized to the VS-2000.
Some synchronization operations also involve parameters on the MIDI PARAMETER
screen (Page 283).
The SYNC AUTO
parameter is actually
available only when
external sync is turned
on—this illustration has
been altered for
instructional purposes.
VS2000OMUS.book 294 ページ ２００４年１０月２０日 水曜日 午後３時３分
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