Casio GM-48S User Manual download pdf

E-35

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 musical

instruments and computers (machines) produced by different manu-

facturers. 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.

• To use the MIDI THRU function of a connected computer, se-

quencer, or other MIDI device, be sure to turn this keyboard’s LO-

CAL CONTROL off (page E-37).

Computer or other MIDI device

MIDI IN MIDI OUT

789

456

POWER

MODE VOLUME

MAX

TEMPO

INTRO

STEP 1 STEP 2 STEP 3

DEMO

NORMAL/

FILL-IN

VARIATION/

FILL-IN

SYNCHRO/

ENDING

FULL RANGE

KEY LIGHT

TOUCH

RESPONSE

METRONOME BEAT

TOUCH

TRANSPOSE/

TUNE/MIDI MEMORY STEP

SPLIT LAYER

MEMORY

STEP

RESPONSE

ACCOMP

VOLUME

CHORD

FINGERED

CASIO CHORD

NORMAL

MIN

START/

STOP

SONG BANK CONTROLLER

3-STEP LESSON

REST

(TIE)

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, pedal op-

eration, 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.

This keyboard is equipped with multi-timbre capabilities, which

means it can receive messages over all 16 MIDI channels and play up

to 16 parts at the same time.

Keyboard and pedal operations performed on this keyboard are sent

out by selecting a MIDI channel (1 to 16) and then sending the appro-

priate message.

General MIDI

As we have already seen, MIDI makes is possible to exchange musi-

cal data between devices produced by different manufacturers. This

musical data does not consist of the notes themselves, but rather in-

formation on whether a keyboard key is pressed or released, and the

tone number.

If tone number 1 on a keyboard produced by Company A is PIANO

while tone number 1 on a Company B's keyboard is BASS, for exam-

ple, sending data from Company A's keyboard to Company B's key-

board produces a result entirely different from the original. If a com-

puter, sequencer or other device with auto accompaniment capabili-

ties is used to produce music data for the Company A keyboard which

has 16 parts (16 channels) and then that data is sent to the Company

B keyboard which can receive only 10 parts (10 channels), the parts

that cannot be played will not be heard.

The standard for the tone numbering sequence, the number of pads,

and other general factors that determine the sound source configura-

tion, which was arrived at by mutual consultations by manufactur-

ers, is called General MIDI.

The General MIDI standard defines the tone numbering sequence,

the drum sound numbering sequence, the number of MIDI channels

that can be used, and other general factors that determine the sound

source configuration. Because of this, musical data produced on a

General MIDI sound source can be played back using similar tones

and identical nuances as the original, even when played on another

manufacturers sound source.

This keyboard conforms with General MIDI standards, so it can be

connected to a computer or other device and used to play back Gen-

eral MIDI data that has been purchased, downloaded from the Inter-

net, or obtained from any other source.

Computer or other MIDI device

MIDI OUT MIDI IN

MIDI IN

MIDI keyboard or MIDI sound sourcce

MIDI Channel 1 Melody

MIDI Channel 2 Bass

MIDI Channel 10 Drums

MIDI ke

board or MIDI sound sourcce

MIDI IN

Receive MIDI Channel = 1

Plays melody.

Receive MIDI Channel = 2

Plays bass.

Receive MIDI Channel = 10

Plays drum part.

474A-E-037A

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Summary of Contents

Page 1 - MIDI Channels

E-35MIDIWhat is MIDI?The letters MIDI stand for Musical Instrument Digital Interface, whichis the name of a worldwide standard for digital signals and

Page 2 - Changing MIDI Settings

E-36Changing MIDI SettingsYou can use this keyboard in combination with an external sequenc-er, synthesizer, or other MIDI device to play along with c

Page 3 - LOCAL CONTROL (Default: On)

E-37ACCOMP MIDI OUT (Default: Off)on: Auto Accompaniment is played by the keyboard and the corre-sponding MIDI message is output from the MIDI OUT ter

Page 4 - Messages

E-38ASSIGNABLE JACKSUS(sustain): Specifies a sustain*1 effect when the pedal is de-pressed.SoS (sostenuto): Specifies a sostenuto*2 effect when the pe

Page 5 - 474A-E-041A

E-39❚ NOTE ❚The pitch of a note depends on the tone that is being used, as shown inthe Note Table on page A-1. Whenever this keyboard receives a note