Yamaha CVP-203 Manual Do Proprietário

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Using Your Clavinova with Other Devices
149
CVP-205/203
The “controller” and “tone generator” in the illustration 
above are equivalent to the piano in our acoustic 
example. Here, the player’s performance on the keyboard 
is captured as MIDI song data (see illustration below). In 
order to record the audio performance on an acoustic 
piano, special recording equipment is needed. However, 
since the Clavinova features a built-in sequencer that lets 
you record performance data, this recording equipment is 
unnecessary. Instead, your digital instrument — the 
Clavinova — allows you to both record and play back the 
data.
However, we also need a sound source to produce the 
audio, which eventually comes from your speakers. The 
tone generator of the Clavinova fills this function. The 
recorded performance is reproduced by the sequencer, 
playing back the song data, using a tone generator 
capable of accurately producing various instrument 
sounds — including that of a piano. Looked at in another 
way, the relation of the sequencer and the tone generator 
is similar to that of the pianist and the piano — one plays 
the other. Since digital instruments handle playback data 
and the actual sounds independently, we can hear our 
piano performance played by another instrument, such as 
guitar or violin.
Finally, we’ll take a look at the actual data that gets 
recorded and that serves as the basis for playing the 
sounds. For example, let’s say you play a “C” quarter note 
using the grand piano sound on the CVP-205/203 
keyboard. Unlike an acoustic instrument that puts out a 
resonated note, the electronic instrument puts out 
information from the keyboard such as “with what voice,” 
“with which key,” “about how strong,” “when was it 
pressed” and “when was it released.” Then each piece of 
information is changed into a number value and sent to 
the tone generator. Using these numbers as a basis, the 
tone generator plays the stored sampled note. 
■ Example Keyboard Data
Panel operations on the CVP-205/203, such as playing the 
keyboard and selecting voices, are processed and stored 
as MIDI data. The auto accompaniment styles and songs 
also consist of MIDI data.
MIDI is an acronym that stands for Musical Instrument 
Digital Interface, which allows electronic musical 
instruments to communicate with each other, by sending 
and receiving compatible Note, Control Change, Program 
Change and various other types of MIDI data, or 
messages.
The CVP-205/203 can control a MIDI device by 
transmitting note related data and various types of 
controller data.The CVP-205/203 can be controlled by 
incoming MIDI messages which automatically determine 
the tone generator mode, select MIDI channels, voices 
and effects, change parameter values and of course play 
the voices specified for the various parts.
MIDI messages can be divided into two groups: Channel 
messages and System messages. 
■ Channel Messages
The CVP-205/203 is an electronic instrument that can 
handle 16 channels (or 32 channels, when using the TO 
HOST terminal). This is usually expressed as “it can play 
16 instruments at the same time.” Channel messages 
transmit information such as Note ON/OFF, Program 
Change, for each of the 16 channels.
Tone generator
Sequencer
Keyboard performance
(MIDI data)
Even though it is a single musical instrument, the Clavinova can be 
thought of as containing several electronic components: a control-
ler, a tone generator, and a sequencer.
Voice number (with what voice)
01 (grand piano)
Note number (with which key)
60 (C3)
Note on (when was it pressed) 
and 
note off (when was it released)
Timing expressed numerically 
(quarter note)
Velocity (about how strong)
120 (strong)
Message Name 
CVP-205/203 Operation/Panel Setting
Note ON/OFF 
Messages which are generated when the 
keyboard is played. Each message includes 
a specific note number which corresponds 
to the key which is pressed, plus a velocity 
value based on how hard the key is played.
Program Change
Voice selecting (control change bank select 
MSB/LSB setting)
Control Change
Volume, panpot (Mixing Console), etc. 
MIDI data has the following advantages over audio data:
• The amount of data is much less, letting you easily store MIDI 
songs to floppy disk.
• The data can be effectively and easily edited, even to the point of 
changing voices and transforming the data.
The performance data of all songs and styles is handled as MIDI 
data.