MOTU micro express-USB, Руководство пользователя

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U S I N G M I D I E X P R E S S X T C O N S O L E
54
WINDOWS MIDI PORTS
As for data arriving and leaving your computer via
the included Windows MIDI driver, imagine it
coming a going from the MIDI Express XT data
bus as shown in Figure 7-5. All channelizing and
filtering is applied before the input data arrives at
any software input port and after it is sent from any
software output port. This is a great advantage as it
frees up your computer and MIDI software from
having to deal with the mundane (and time-
consuming) chore of such processing. Just
configure your MIDI Express XT and let it do all
the work!
Once you get the MIDI Express XT Windows MIDI
driver installed, you’ll notice that all eight MIDI
Express XT inputs and outputs are available to
your MIDI programs.
Figure 7-6: MIDI Express XT ports in Cakewalk Pro.
Sync Port
You’ll also see several other special MIDI
Express XT ports in addition to its regular MIDI
ports. The first is the “Sync” input port where all
MIDI real time and MIDI Time Code messages will
arrive, regardless of where the MIDI Express XT
received them from. All other received data will
arrive at the other input ports as appropriate.
☛
At no time will MIDI real time or MIDI Time
Code messages arrive on any of other MIDI
Express XT Windows input port besides the special
“sync port”.
Out All port
You’ll also see a port called “Out All”. This port will
also appear in your MIDI programs, allowing you
to send the same MIDI data out all the MIDI
Express XT’s output ports at once.
MIDI ports and the Express XT Console
You do not need to have the Console running in
Windows to use the MIDI Express XT with your
other MIDI software. Also, as the Console does not
compete with other MIDI applications for the
Windows MIDI ports, you can freely open and
close the Console to make adjustments or simply
check the current settings.
MIDI Express XT
data bus
Channel
mapping
Windows MIDI Ports
(Computer)
MDI OUT
Channel
mapping
Event filtering Event filtering
MDI IN
Figure 7-5: MIDI Express XT internal MIDI data
processing sequence.
!USB Interfaces Manual Book Page 54 Tuesday, October 10, 2000 12:43 PM