Yamaha CLP-955 Guia Do Utilizador

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CLP-955

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MIDI, the Musical Instrument Digital Interface, is a world-

standard communication interface that allows MIDI-compatible
musical instruments and equipment to share musical information and
control one another. This makes it possible to create “systems” of
MIDI instruments and equipment that offer far greater versatility and
control than is available with isolated instruments. For example, most
MIDI keyboards (including the Clavinova, of course) transmit note

and velocity (touch response) information via the MIDI OUT connector whenever a note is played on the
keyboard. If the MIDI OUT connector is connected to the MIDI IN connector of a second keyboard (synthesizer,
etc.) or a tone generator (essentially a synthesizer with no keyboard), the second keyboard or tone generator will
respond precisely to notes played on the original transmitting keyboard. The result is that you can effectively
play two instruments at once, providing thick multi-instrument sounds.

This same type of musical information transfer is used for MIDI

sequence recording. A sequence recorder can be used to “record”
MIDI data received from a Clavinova, for example. When the
recorded data is played back, the Clavinova automatically “plays”
the recorded performance in precise detail.

The examples given above really only scratch the surface. MIDI

can do much, much more. The Clavinova MIDI functions allow it to
be used in fairly sophisticated MIDI systems.

MIDI IN

MIDI OUT

CLP-955

POWER

MIDI IN

MIDI IN

MIDI OUT

MIDI OUT

CLP-955

POWER

After selecting “F8.Y”, press the [+/YES] button to engage the MIDI function sub-mode, then use

the FUNCTION [<] and [>] buttons to select the desired MIDI function, as listed below.

• The bottom-panel HOST SELECT switch must be set to “MIDI” in order to use the MIDI connectors. When you

use the TO HOST connector, set the HOST SELECT switch to the appropriate position for the type of computer
you are using (see page 37). In this situation, all MIDI settings described below will have affect on the MIDI
signal in and out of the TO HOST connector.

• Always use a high-quality MIDI cable to connect MIDI OUT to MIDI IN terminals. Never use MIDI cables longer

than about 15 meters, since cables longer than this can pick up noise which can cause data errors.

The MIDI system allows transmission

and reception of MIDI data on 16 different
channels. Multiple channels have been
implemented to allow selective control of
certain instruments or devices connected in
series. For example, a single MIDI sequence
recorder could be used to “play” two differ-

ent instruments or tone generators. One of the instruments or tone generators could be set to receive
only on channel 1, while the other is set to receive on channel 2. In this situation the first instrument
or tone generator will respond only to channel-1 information transmitted by the sequence recorder,
while the second instrument or tone generator will respond only to channel-2 information. This
allows the sequence recorder to “play” two completely different parts on the receiving instruments or
tone generators.

MIDI IN

MIDI IN

MIDI THRU

MIDI OUT

CLP-955

POWER

(Set to receive on MIDI
channel 1)

(Set to receive on MIDI
channel 2)