Connecting with External Devices

If You’re Using MIDI

What’s MIDI?

MIDI stands for “Musical Instrument Digital Interface,” and is a unified standard for the exchange of performance data and other information between electronic instruments and computers.

The AT-15 is equipped with MIDI connectors to let it exchange performance information with external devices. These connectors can be used to connect the AT-15 to an external device for even greater versatility.

About MIDI Connectors

The AT-15 has two kinds of MIDI connectors.

Connecting these to the MIDI connectors on a MIDI instrument makes it possible for the two instruments to control each other.

For instance, you can output sound from the other instrument or switch tones on the other instrument.

You should also set the MIDI send channel as needed (p. 93).

MIDI Out Connector

The notes played on the keyboard, movements of the Damper pedal, Expression data, and data indicating that a Registration button [1]–[8] was pressed will be transmitted to the external MIDI connector.

MIDI In Connector

Performance messages from an external MIDI device are received here.

These incoming messages may instruct the receiving MIDI instrument to play sounds or switch tones.

The AT-15 contains two sound generators: one sound generator for its own keyboards and one GS sound generator (p. 110). Normally, musical data transmitted from an external device to the MIDI In connector is sent to the GS sound generator, but you can also set the “MIDI IN Mode” parameter (p. 94) so that the keyboard sound generator is controlled.

Connecting the AT-15 to a MIDI Instrument

NOTE

To prevent malfunction and/or damage to speakers or other devices, always turn down the volume, and turn off the power on all devices before making any connections.

1.Turn down the volume all the way on all equip- ment.

2.Turn off the power to the AT-15 and other connected equipment.

3.Use a MIDI cable (sold separately) to connect the MIDI connector on the external instrument to the MIDI connector on the AT-15.

4.Turn on the external MIDI device and AT-15.

5.You should change the setting of TxMIDI channel as needed (p. 93).

Connection Example:

Connecting the MIDI Device

AT-15

MIDI

Out In

External MIDI Devices

*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.

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Roland AT15 owner manual If You’re Using Midi, Connecting the AT-15 to a Midi Instrument