Akai S1000 Series Operator's Manual download pdf (Page 83)

Chapter 3: Recording Sequences

Page 70

Recording MIDI System-Exclusive Data

The MPC3000 can record patch data or any other MIDI system-

exclusive messages from external synthesizers directly into tracks.

To do this, simply send the system-exclusive message to the

MPC3000 while in Record, Overdub, or Step Edit mode, and it will

be recorded into the active track, just the same as any other MIDI

data. The only limitation is that the message must be smaller than

1000 bytes. If an attempt is made to record a message that is larger

than that, the entire message will be rejected. 1000 bytes is enough

to accommodate a single voice patch data dump from virtually any

synthesizer, but it is not large enough for many voice bank data

dumps (large files containing an entire bank of synthesizer patches).

One way of using this feature is to insert a blank bar at the begin-

ning of your sequence and record the voice data dumps for each

track into that first bar. When the sequence is played from the start,

each external synthesizer will immediately receive the voice data in

the first bar, so it will be ready to play the note data starting in the

second bar with the proper sound.

There is one problem with playing system-exclusive messages from

sequences: there is no standard method for identifying the MIDI

channel number within the message, and therefore the MPC3000

cannot assign the output MIDI channel over which the message will

be sent. This means, for example, that a system-exclusive message

received over MIDI channel 3 while recording into the MPC3000

will always be played out of the MPC3000 on MIDI channel 3,

regardless of the track’s output MIDI channel. To overcome this

problem, you must send the system-exclusive message on the

desired MIDI channel while recording it into the MPC3000. Most

synthesizers allow you to select the transmit channel. Note, how-

ever, that some older synthesizers, such as the original Yamaha DX-

7, always transmit on MIDI channel 1.

However, there is a way to change the MIDI channel of a system-

exclusive message while it is in the MPC3000—by using Step Edit.

The MIDI channel is assigned to a single byte within the message

and the Step Edit function allows you to change the contents of any

byte within the message. If you know which byte a particular

manufacturer uses for the channel number, you can change the

contents of that byte to the desired MIDI channel number. For

example, the Yamaha DX-7 system-exclusive messages contain the

MIDI channel in byte number 3, so whatever number you put into

byte number 3 of the message will be the new output MIDI channel

number. To learn more about editing in Step Edit mode, read “The

STEP EDIT Key” section in the “Editing Sequences” chapter of this

manual.

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Akai S1000 Series Operator's Manual Page 83

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