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MIDI Functions

MIDI is an acronym that stands for Musical Instrument Digital Interface, which 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.

The PSR-530 can control a MIDI device by transmitting note related data and various types of controller data. The PSR-530 can be controlled by the incoming MIDI messages which automatically determine tone generator mode, select MIDI channels, voices and effects, change parameter values and of course play the voices specified for the various parts.

MIDI messages can be divided into two groups: Channel messages and System messages. Below is an explanation of the various types of MIDI messages which the PSR-530 can receive/transmit.

Channel Messages

The PSR-530 is an electronic instrument that can handle 16 channels. This is usually expressed as “it can play 16 instruments at the same time.” Channel messages transmit information such as Note ON/OFF, Program Change, for each of the 16 channels.

Message Name

PSR-530 Operation/Panel Setting

 

 

Note ON/OFF

Messages which are generated when the keyboard is played.

 

Each message includes a specific note number which corre-

 

sponds to the key which is pressed, plus a velocity value based

 

on how hard the key is stuck.

 

 

Program Change

Voice setting (control change bank select MSB/LSB setting)

 

 

Control Change

Revoice setting(volume, pan pot, etc.)

 

 

System Messages

This is data that is used in common by the entire MIDI system. System messages include messages like Exclusive Messages that transmit data unique to each instrument manufacturer and Realtime Messages that control the MIDI device.

Message Name

PSR-530 Operation/Panel Setting

 

 

Exclusive Message

Reverb/chorus/DSP settings, etc.

 

 

Realtime Messages

Clock setting

 

Start/stop operation

 

 

The messages transmitted/received by the PSR-530 are shown in the MIDI Data

Format and MIDI Implementation Chart on pages 110 and 122.

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