Yamaha PSR-202 MIDI

MIDI

The PSR-202 also features MIDI terminals, allowing

you to interface the PSR-202 with other MIDI instru-

ments and devices.

■ About MIDI• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

MIDI (Musical Instrument Digital Interface) is a worldwide standard that is built into many elec-

tronic musical instruments and other digital music related devices, allowing them to be connected

and “communicate” with each other.

For two MIDI instruments to communicate, they must be connected by MIDI cables. In a basic

example, the MIDI IN and MIDI OUT terminals of the PSR-202 could be connected to the MIDI

OUT and MIDI IN terminals of a sequencer, allowing you to record and play back performance

data from the PSR-202.

The instruments communicate with each other by sending “messages” or MIDI data. The sending

instrument usually assigns the data to one of sixteen MIDI channels, then transmits it over the

MIDI cable. The cable itself, however, is not divided up into sixteen channels. Just as with a tele-

vision set that receives programs on different channels, it is up to the receiving instrument to “tune

into” the proper MIDI channel. If the sending and receiving channels on the respective instruments

do not match, the receiving instrument may not understand or respond to the one sending.

■ How Can MIDI be Used? • • • • • • • • • • • • • • • • • • • • • • • • • • • •

In the simple, yet powerful MIDI application example below, the Yamaha

QY70 Music Sequencer is used to record and play back performance data

played on the PSR-202 keyboard.

Before actually recording to the sequencer, press the [ACMP] button once

or twice to make sure that the current settings are sent.

Receives MIDI data

from the connected

sending device.

Transmits MIDI data (key-

board performance) to the

connected device.

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Connect the MIDI IN of

the PSR-202 to the MIDI

OUT of the QY70

Connect the MIDI OUT

of the PSR-202 to the

MIDI IN of the QY70

• On the PSR-202, the following channels

(eight total) are enabled for MIDI reception:

1, 2, 3, 4, 5, 6, 7, 10. The MIDI transmit

channels are ﬁxed to the following data:

Ch. 1 : Keyboard, harmony

Ch. 2 : Bass

Ch. 3 : Chord

Ch. 4 - 7 : Other

Ch. 10 : Rhythm

• Parts that have been recorded using the

PSR-202 should also be played back from

the PSR-202. Data may not play back as

expected when using other sound sources

(such as the internal sounds of the QY70).

Also, a connected sound source may sound

at a different octave from that originally

played on the PSR-202.

• MIDI data cannot be transmitted during

song playback.

• Avoid using MIDI cables 15 meters or

longer, since doing so can result in MIDI

errors.

Viewing the Notation for MIDI Channel 1

• The PSR-202 has a special function that

lets you view the notes of the MIDI data

(channel 1 only) on the display.