Yamaha YPP-35 Руководство пользователя - Страница 11
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А. What is MIDI?
The YPP-35 is MIDi-equipped
keyboard.
MIDI
(Musical Instrument Digital Interface) is a worldwide
standard for communicating performance informa-
tion between electronic musical instruments. With
MIDI, the YPP-35 can control, and be controlled by,
other MIDI-equipped instruments, such as synthe-
sizers, sequencers and drum machines.
In asimple MIDI setup between two instruments, the
instrument which is controlling is called the Master,
and the instrument being controlled is called the
Slave (Diagram A). You can also set up the two
instruments so that they control each other, i.e. both
machines are simultaneously Masters and Slaves
(Diagram B). To connect the YPP-35 to another
MIDI-equipped instrument, use the MIDI-IN or MIDI-
OUT jacks on the rear panel, and join the instruments
as shown in Diagram A or B.
OUT
IN
DIAGRAM
MASTER
SLAVE
OUT
MASTER
/SLAVE
DIAGRAM
MASTER
B
/SLAVE
Diagram A depicts a "One-Way" connection, and
Diagram B depicts a "Hand-Shaking" connection.
All the following MIDI explanations will relate to
these terms, as well as to the terms Master and
Slave. So please be clear aboutall of these concepts
before proceeding.
Note: If you connect more than two instruments, the
third instrument becomes the second Slave. To do
this, make an additional One-Way connection from
the MIDI-THRU jack of the first Slave to the MIDI-IN
jack of the second Slave:
DIAGRAM
OUT
IN
| THRU
{
FIRST
SECOND
MASTER
SLAVE
SLAVE
5. MIDI
Atthis time, the first Slave simply transmits, from its
MIDI-THRU jack, the information received at its
MIDI-IN jack. In this way, a Master can control two
Slaves simultaneously.
Note: some MIDI instruments, such as the YPP-35,
are notequipped with a MIDI-THRU jack, so are best
suited to be the final Slave in a MIDI chain.
*
AlthoughMiDlisauniform standard, different instruments
may have different specifications.
Making the MIDI
connection is not enough.
The MIDI instruments or
devices must also have the same MIDI functions. If you
wish to know about the MIDI functions of a device, refer
to its MIDI Implementation Chart. The MIDI Implemen-
tation Chart for the YPP-35 is on the last page of this
manual.
B. Types
of MIDI
Informa-
tion
What kind of information is communicated by MIDI?
The most universal is information about the notes
being performed (or played back) from the Master.
This is called "Note On" message, which includes
information about the key being depressed (trans-
mitted as MIDI note number), and, in the case of
touch sensitive instruments such as the YPP-35, the
velocity (speed) of depression (transmitted as ve-
locity data). For instance, when the YPP-35 в setup
as a Master, playing something on it will activate the
sound module of the Slave, and you will hear,
simultaneously, the voices of both instruments as
you play. If your Slave instrument is equipped to
receive the velocity data, the volume, timbre of its
voice will also vary according to your performance.
In addition to Note On information, the YPP-35 is
also equipped to deal with Program Change and
Control Change messages.
1) Program Change Message
Program Change message is usedto change voices
on a Slave instrument. For instance, with the YPP-
35 set up as a Master, if you select one of its voices,
a Program Change message (including MIDI Pro-
gram Number) will be transmitted to the Slave. If the
Slave has the MIDI capabilities to receive this
message, its own voice will be changed according to
the MIDI Program Number it has received.
Con-
versely, when the YPP-35 is the Slave, it can receive
the message and will automatically select its voice
according to the МО! Program Number from the
Master.