When
Custom MIDI
is chosen, more controls will become visible for editing the custom messages.
The
MIDI Message Type
popup lets you choose any of the basic MIDI messages except for system
exclusive and MIDI Time Code.
The first group of messages in the popup include a MIDI channel. If you choose one of these message
types, a channel editor appears. You can either type or use the up and down arrows to set the channel.
This editor accepts values from 1 through 16.
All MIDI messages except for system exclusive are either one, two or three bytes long. The first byte
always is the message type, called the
status byte
. If there is a MIDI channel, it is embedded in the status
byte. The bytes following the status byte, if any, are referred to as data bytes and contain additional
information such as note numbers, velocities, control values, etc...
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