Bedienungsanleitung Casio CTK-471 (Seite 32 von 46) (Englisch)

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E-30

MIDI

What is MIDI?

The letters MIDI stand for Musical Instrument Digital Interface, which

is the name of a worldwide standard for digital signals and connec-

tors that makes it possible to exchange musical data between musi-

cal instruments and computers (machines) produced by different

manufacturers. MIDI compatible equipment can exchange keyboard

key press, key release, tone change, and other data as messages.

Though you do not need any special knowledge about MIDI to use

this keyboard as a stand-alone unit, MIDI operations require a bit of

specialized knowledge. This section provides you with an overview

of MIDI that will help to get you going.

MIDI Connections

MIDI messages are send out through the MIDI OUT terminal of one

machine to the MIDI IN terminal of another machine over a MIDI

cable. To send a message from this keyboard to another machine, for

example, you must use a MIDI cable to connect the MIDI OUT termi-

nal of this keyboard to the MIDI IN terminal of the other machine. To

send MIDI messages back to this keyboard, you need to use a MIDI

cable to connect the other machine’s MIDI OUT terminal to the MIDI

IN terminal of this keyboard.

To use a computer or other MIDI device to record and playback the

MIDI data produced by this keyboard, you must connect the MIDI

IN and MIDI OUT terminals of both machines in order send and re-

ceive data.

MIDI Channels

MIDI allows you to send the data for multiple parts at the same time,

with each part being sent over a separate MIDI channel. There are 16

MIDI channels, numbered 1 through 16, and MIDI channel data is

always included whenever you exchange data (key press etc.)

Both the sending machine and the receiving machine must be set to

the same channel for the receiving unit to correctly receive and play

data. If the receiving machine is set to Channel 2, for example, it re-

ceives only MIDI Channel 2 data, and all other channels are ignored.

With this keyboard, messages received over MIDI Channels 1, 2, 3, 4,

and 10 can be used for multi-timbre play of up to five different in-

strument parts. The tone and volume settings for these five channels

must be controlled by messages sent from an external device.

When sending operation of this keyboard to an external device, Chan-

nel 1 should be selected as the MIDI send channel.

General MIDI

General MIDI standardizes MIDI data for all sound source types, re-

gardless of manufacturer. General MIDI specifies such factors as tone

numbering, drum sounds, and available MIDI channels for all sound

sources. This standard makes it possible for all MIDI equipment to

reproduce the same nuances when playing General MIDI data, re-

gardless of the manufacturer of the sound source.

Though the sound source of this keyboard is not General MIDI com-

patible, you can still connect the keyboard to a computer or other

MIDI equipment to playback General MIDI data that is widely avail-

able in stores, over computer networks, and from other sources.

❚

NOTES

❚

• General MIDI data made up of a large number of parts may not play

correctly on this keyboard.

• You will have most success playing back General MIDI data that has

few parts and is made up of data on channels 1, 2, 3, 4, and 10.

Messages

There is a wide variety of messages defined under the MIDI stan-

dard, and this section details the particular messages that can be sent

and received by this keyboard.

NOTE ON/OFF

This message sends data when a key is pressed (NOTE ON) or re-

leased (NOTE OFF).

A NOTE ON/OFF message include a note number (to indicate note

whose key is being pressed or released) and velocity (keyboard pres-

sure as a value from 1 to 127). NOTE ON velocity is always used to

determine the relative volume of the note. This keyboard does not

receive NOTE OFF velocity data.

Whenever you press or release a key on this keyboard, the correspond-

ing NOTE ON or NOTE OFF message is sent by constant velocity

from the MIDI OUT terminal.

❚

NOTE

❚

The pitch of a note depends on the tone that is being used, as shown in

the Note Table on page A-1. Whenever this keyboard receives a note num-

ber that is outside its range for that tone, the same tone in the nearest

available octave is substituted.

PROGRAM CHANGE

This is the tone selection message. PROGRAM CHANGE can con-

tain tone data within the range of 0 to 127.

A PROGRAM CHANGE message (0 to 99) is sent out through this

keyboard’s MIDI OUT terminal whenever you manually change its

tone number. Receipt of a PROGRAM CHANGE message from an

external machine changes the tone setting of this keyboard (page E-

31).

This keyboard can send tone data within the range of 00 to 99 and

receive tone data within the range of 0 to 127.

PITCH BEND

This message carries pitch bend information for smoothly sliding the

pitch upwards or downwards during keyboard play. This keyboard

does not send pitch bend data, but is can receive such data.

MIDI IN MIDI OUT

START/

STOP

ACCOMP

VOLUME

TEMPO

MAIN VOLUMEPOWER / MODE

FINGERED

100 SONG BANK KEYBOARD

MUSICAL INFOMATION SYSTEM

SYNCHRO /

FILL-IN

CASIO CHORD

NORMAL

OFF

SONG BANK CONTROLLER

TRANSPOSE /

TUNE

CHORD

BOOK

LEFT

ON/OFF

REW FF

STOP

SONG BANK CONTROLLER

RIGHT

ON/OFF

PLAY/

PAUSE

7 89

1023

M7 dim aug

sus4CLEAR -5 add9

MUSICAL INFORMATION SYSTEM

TONE

RHYTHM

SONG BANK

STATUS

TEMPO

MAIN VOLUME

FINGERING/PART

LEFT/

ACCOMP

RIGHT/

MELODY

:1 OCTAVE UP

:PEDAL(SUSTAIN)

622A-E-032A

MIDI sequencer

01.7.26, 10:41 AMPage 30

Casio CTK-471 Seite 32

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