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5
Midi
applications
MIDI (Musical Instrument Digital Interface) is a world-wide standard that allows electronic musical
instruments and computers to exchange musical data.
5.1 MIDI channels
MIDI channels are similar to television channels in that when the channel of a receiving device is set to
match the channel of a transmitting device, the data of that channel will be received.
The Prophecy sends and receives data on its specified Global MIDI channel. The Global MIDI channel
setting is made in Edit mode Global section page GLB-8 [MIDI] Global Channel.
5.2 Note On/Off
When you play a note, a Note On message [9n,kk,vv] is transmitted which tells which note was pressed
(the Note Number), how strongly it was pressed (the Velocity). (n:channel, kk:note number,
vv:velocity) When you release the note, a Note Off message [8n,kk,vv] is transmitted.
The Prophecy transmits Note On/Off messages on the Global MIDI channel when you play its
keyboard. However, if the Prophecy is set to Omni ON, it will receive and produce sound in response to
incoming Note On/Off messages of any channel, regardless of its Global MIDI channel setting.
Normally you will leave Omni OFF (Global mode GLB-8 Omni), so that Note On/Off messages will be
received only on the Global MIDI channel.
5.3 Selecting programs
Programs can be selected by Program Change messages [Cn,pp] (pp: program number, up to 128
sounds can be selected). You can select programs of other banks by using Bank Selecf
1
messages
[Bn,OO,mn] (control change #.00) and [Bn,20,bb] (control change #.32). (mm: upper byte of bank number,
bb: lower byte of bank number, together they allow you to select from 16384 banks.) An incoming Bank
Select message will change the program bank from which subsequent program changes will be taken;
i.e., the bank will not achtally change until the next program change message is received.
Normally the Prophecy will receive program change messages on its Global MIDI channel to change
programs.
Program change messages are transmitted and received only when in Performance mode.
Transmission and reception of program change messages can be turned on/ off in Edit mode Global
section page GLB-12 [MIDI Program Change]. You can also specify the correspondence between the
Prophecy's internal programs (AOO-C63) and the program number
I
program bank of external MIDI
devices. (Edit mode Global section page GLB-13 [Program Bank Select Map] and page GLB-14 [Program
No. Select Map].
*
1
When only Program Chunge messages are used to select sounds via MIDI, only 128 different sounds can be
selected. If you need to select more than 128 sounds, use Bank Select messages. Control Change
0
specifies the
upper byte of the bank number, and Control Change 32 specifies the lower byte. This provides a total of 16384
program banks. When a bank select message is received, the next-received Program Select message will select a
program from the newly specified bank.
When selecting sounds from a MIDI sequencer, send Control Change 0 as the MSB, Control Change 32
as the LSB, and then a Program Change message. The result of receiving these messages will depend on
the settings of Global sedion page GLB-13 [Program Bank Select Map] and GLB-14 [Program No. Select
Map].
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