Table of Contents
Advertisement
Section 6. Appendices
fig.6-06
T.V. information from many different broadcasting station is
sent through an antena.
Broadcasting
Station A
Broadcasting
Station B
Broadcasting
Station C
MIDI has sixteen channels 1 – 16, and MIDI messages will be
received by the instrument (the receiving device) whose
channel matches the channel of the transmitter.
* If Omni mode is on, data of all MIDI channels will be received
regardless of the MIDI channel setting. If you do not need to
control a specific MIDI channel, you may set Omni On.
Main types of MIDI message
used by the VF-1
MIDI includes many types of MIDI messages that can convey
a variety of information. MIDI messages can be broadly
divided into two types; messages that are handled separately
by MIDI channel (channel messages), and messages that are
handled without reference to a MIDI channel (system
messages).
Channel Messages
These messages are used to convey performance
information. Normally these messages perform most of the
control. The way in which a receiving device will react to
each type of MIDI message will be determined by the
settings of the receiving device.
Program Change messages
These messages are generally used to select sounds, and
include a program chage number from 1 to 128 which
specifies the desired sound.
Control Change messages
These messages are used to enhance the expressiveness of a
performance. Each message includes a controller number,
and the settings of the receiving device will determine what
aspect of the sound will be affected by Control Change
messages of a given control number.
132
Select the channel of the
broadcasting station you
wish to watch
System Messages
System messages include exclusive messages, messages used
for synchronization, and messages used to keep a MIDI
system running correctly. Exclusive messages are the main
type of message in this category used by the VF-1.
Exclusive Messages
Exclusive messages handle information related to a unit's
own unique sounds, or other device specific information.
Generally, such messages can only be exchanged between
devices of the same model by the same manufacturer.
Exclusive messages can be employed to save the settings for
Effects Programs into a sequencer, or for transferring such
data to another VF-1.
About the MIDI Implementation
Chart
MIDI allows a variety of messages to be exchanged between
instruments, but it is not necessarily the case that all types of
message can be exchanged between any two MIDI devices.
Two devices can communicate only if they both use the types
of messages that they have in common.
Thus, every owner's manual for a MIDI device includes a
"MIDI Implementation Chart." This chart shows the types of
message that the device is able to transmit and receive. By
comparing the MIDI implementation charts of two devices,
you can tell at a glance which messages they will be able to
exchange. Since the charts are always of a uniform size, you
can simply place the two charts side by side.
fig.6-07
Fold here
MIDI Device A
Function
Transmit
* A separate publication titled "MIDI Implementation" is
also available. It provides complete details concerning
the way MIDI has been implemented on this unit. If
you should require this publication (such as when you
intend to carry out byte-level programming), please
contact the nearest Roland Service Center or
authorized Roland distributor.
MIDI Device B
Recognized Remarks
Advertisement
Table of Contents
