Yamaha Clavinova CLP-570 Посібник користувача - Сторінка 16
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14
| MIDI FUNCTIONS
A Brief Introduction to MIDI
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 connect-
ed to the MIDI IN connector of a second keyboard (synthesizer,
etc.) or a tone generator such as the Yamaha EMT-1 FM Sound
Box (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.
MIDI Cable
This same type of musical information transfer is used for MIDI
sequence recording. A sequence recorder such as the Yamaha
EMQ-1
Memory
Box 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.
Data Being Recorded
Playback Data
EMO-1 Memory Box
a
The examples given above really only scratch the surface. MIDI
can do much, much more. The CLP-670 and CLP-570 offer a
number of MIDI functions that allow them to be used in fairly
sophisticated MIDI systems.
Note: Always use a high-quality MIDI cable to connect MIDI OUT
to MIDI IN terminals. Never use MIDI cables longer than about
15 feet, since cables longer than this can pick up noise which
can cause data errors.
MIDI "Messages" Transmitted «
Received by the Clavinova
The MIDI information (messages) transmitted and received by
the CLP-670 and CLP-570 Clavinova are as follows:
Note and Velocity Data
This information tells the receiving keyboard or tone generator
to play a certain note (specified by the MIDI note number) at
a certain dynamic level (specified by the MIDI velocity value).
Note and velocity data is transmitted by the Clavinova whenever
a key is pressed, and the Clavinova's internal AWM tone generator
will "play" the corresponding note(s) whenever note and velocity
data is received from an external MIDI device.
Clavinova
Program Change Numbers
The CLP-670 transmits
a MIDI program number between 0
and 9 and the CLP-570 transmits a program change number
between 0 and 6 when one of its voice selectors is pressed.
This
normally
causes
the
correspondingly
numbered
voice
or program
to be selected on a receiving MIDI
device. The
Clavinova will respond in the same way, automatically select-
ing the appropriate voice when a MIDI program change number
is received. See "Program Change ON/OFF"
on page 15 for
information on turning program change number reception and
transmission ON or OFF.
Control Change Numbers
Control Change data representing Soft, Sostenuto and Damper
pedal operations is transmitted by the Clavinova whenever one
of these pedals is used. If the receiving device is a tone generator
or another keyboard, it will respond in the same way as the
Clavinova's internal tone generator when one of the pedals is
used. The Clavinova also receives and responds to the appropriate
control change data. See "Control Change ON/OFF"
on page
15 for information on turning control change number reception
and transmission ON or OFF.
MIDI Transmit & Receive Channel
Selection
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 different instru-
ments or tone generators. One of the instruments or tone genera-
tors 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.
MID! OUT 2
MIDI IN
EMT-1 FM Sound Box
(Set to receive on MIDI
channe! 2)
Ema: 1 Memory Box
;
MIDI IN
[mmm
Clavinova
(Set to receive on MIDI channel 1)
In any MIDI control setup, the MIDI channels of the transmitt-
ing and receiving equipment must be matched for proper data
transfer. An "OMNI"
receive mode is also available, which
allows reception on all 16 MIDI channels. In the OMNI mode
it is not necessary to match the receive channel of the receiving
device to the the transmit channel of the transmitting device
(except when receiving mode messages).
Setting the Clavinova MIDI Channels
1. Press and hold the TRANSPOSER/MIDI
button.
2. Press the key on the keyboard corresponding to the desired
MIDI transmit or receive channel.*
3. Release the TRANSPOSER/MIDI
button.
For setting the transmit channel.
(C1
—
For setting the receive channel. (Ca
- Da)