Yamaha PSR-350 Owner's Manual - Page 80

Channel Messages, System Messages, MIDI Terminals - specifications

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MIDI Functions 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 PSR-350 can control a MIDI device by transmitting note related data and various types of controller data. The PSR-350 can be controlled by the incoming MIDI messages which automatically determine 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. Below is an explanation of the various types of MIDI messages which the PSR-350 can receive/transmit. q Channel Messages The PSR-350 is an electronic instrument that can handle 16 channels. 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. Message Name Note ON/OFF Program Change Control Change PSR-350 Operation/Panel Setting 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 stuck. Voice number (along with corresponding bank select MSB/LSB settings, if necessary). Messages that are used to change some aspect of the sound (modulation, volume, pan, etc.). q System Messages This is data that is used in common by the entire MIDI system. System messages include messages like Exclusive Messages that transmit data unique to each instrument manufacturer and Realtime Messages that control the MIDI device. Message Name Exclusive Message Realtime Messages PSR-350 Operation/Panel Setting Reverb/chorus/DSP settings, etc. Start/stop operation The messages transmitted/received by the PSR-350 are shown in the MIDI Implementation Chart on page 98. MIDI Terminals In order to exchange MIDI data between multiple devices, each device must be connected by a cable. The MIDI terminals of the PSR-350 are located on the rear panel. MIDI IN MIDI OUT Receives MIDI data from another MIDI device. Transmits the PSR-350's keyboard information as MIDI data to another MIDI device. • Special MIDI cables (sold separately) must be used for connecting to MIDI devices. They can be bought at music stores, etc. • Never use MIDI cables longer than about 15 meters. Cables longer than this can pick up noise which can cause data errors. 80

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MIDI Functions
80
MIDI is an acronym that stands for Musical Instrument Digital Interface, which
allows electronic musical instruments to communicate with each other, by send-
ing and receiving compatible Note, Control Change, Program Change and various
other types of MIDI data, or messages.
The PSR-350 can control a MIDI device by transmitting note related data and var-
ious types of controller data. The PSR-350 can be controlled by the incoming
MIDI messages which automatically determine 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. Below is an explanation of the various types of MIDI messages which
the PSR-350 can receive/transmit.
●
Channel Messages
The PSR-350 is an electronic instrument that can handle 16 channels. This is usu-
ally 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.
●
System Messages
This is data that is used in common by the entire MIDI system. System messages
include messages like Exclusive Messages that transmit data unique to each
instrument manufacturer and Realtime Messages that control the MIDI device.
The messages transmitted/received by the PSR-350 are shown in the MIDI Imple-
mentation Chart on page 98.
Message Name
PSR-350 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 stuck.
Program Change
Voice number (along with corresponding bank select MSB/LSB set-
tings, if necessary).
Control Change
Messages that are used to change some aspect of the sound (mod-
ulation, volume, pan, etc.).
Message Name
PSR-350 Operation/Panel Setting
Exclusive Message
Reverb/chorus/DSP settings, etc.
Realtime Messages
Start/stop operation
MIDI Terminals
In order to exchange MIDI data between multiple
devices, each device must be connected by a cable.
The MIDI terminals of the PSR-350 are located on the
rear panel.
MIDI IN
Receives MIDI data from another MIDI device.
MIDI OUT
Transmits the PSR-350’s keyboard information as MIDI data
to another MIDI device.
• Special MIDI cables (sold sepa-
rately) must be used for connect-
ing to MIDI devices. They can be
bought at music stores, etc.
• Never use MIDI cables longer
than about 15 meters. Cables
longer than this can pick up noise
which can cause data errors.