DDK-7 Owner’s Manual
236
Connections
13
MIDI (Musical Instrument Digital Interface) allows electronic musical instruments to
communicate with each other, by sending and receiving compatible Note, Control
Change, Program Change and various other types of MIDI data, or messages.
MIDI Messages of the DDK-7
MIDI messages can be divided into two groups: the Channel Messages and System
Messages. Channel Messages consist of data related to the performance on the
keyboard for a specific channel. System Messages consist of data that allows several
MIDI devices to communicate with each other.

Channel Messages

Each time you play the keyboard on the DDK-7, channel messages (indicating which
keys are played and how strongly) are transmitted via a specific channel. Similarly, the
DDK-7 can be played remotely when receiving this data from an external keyboard.
Note On: Indicates which keys are played with the note numbers 0 through 127.
The reception note range is C-2 (0) – G8 (127), C3 = 60.
Note Off: Generated when a key is released.
Velocity: Indicates how strongly the key is played. The range is 1 – 127.
For more detailed information, see MIDI Data Format on page 248 and MIDI
Implementation Chart on page 261.
• Program Change
Program Change messages allow you to change Voices in the middle of a song. With
these messages you can change the Registrations of the DDK-7. For more detailed
information, see MIDI Data Format on page 248 and MIDI Implementation Chart on
page 261.
• Control Change
Control Change Messages let you select Voice banks, control the volume, panning,
modulation, portamento time, brightness and various other sound parameters, through
specific Control Change numbers.
For more detailed information on the Control Change messages available on the DDK-
7, see MIDI Data Format on page 248 and MIDI Implementation Chart on page 261.

System Messages

• System Exclusive Messages
System Exclusive messages are used to exchange the system and Voice/Registration
data.