Yamaha 401 Owner's Manual - Page 194

What is MIDI? Message Name Note ON/OFF Program Change Control Change 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 played. For selecting Voices (with control change bank select MSB/LSB settings) Volume, panpot (Mixing Console), etc. n The performance data of all Songs and Styles is handled as MIDI data. MIDI Channels MIDI performance data is assigned to one of sixteen MIDI channels. Using these channels, 1-16, the performance data for sixteen different instrument parts can be simultaneously sent over one MIDI cable. Think of the MIDI channels as TV channels. Each TV station transmits its broadcasts over a specific channel. Your home TV set receives many different programs simultaneously from several TV stations and you select the appropriate channel to watch the desired program. Weather report NEWS 1 2 2 NEWS MIDI operates on the same basic principle. The transmitting instrument sends MIDI data on a specific MIDI channel (MIDI Transmit Channel) via a single MIDI cable to the receiving instrument. If the receiving instrument's MIDI channel (MIDI Receive Channel) matches the Transmit Channel, the receiving instrument will sound according to the data sent by the transmitting instrument. Example: Recording a performance with the auto accompaniment (Style playback) sound of the instrument to an external sequencer Clavinova track (channnel) RIGHT 1 RIGHT 2 LEFT STYLE instrument STYLE instrument STYLE instrument STYLE instrument STYLE instrument STYLE instrument STYLE instrument STYLE instrument MIDI cable Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 Channel 6 Channel 7 Channel 8 Channel 9 Channel 10 Channel 11 External sequencer Track 1 Track 2 Track 3 Track 4 Track 5 Track 6 Track 7 Track 8 Track 9 Track 10 Track 11 As you can see, it is essential to determine which data is to be sent over which MIDI channel when transmitting MIDI data (page 198). The instrument also allows you to determine how the received data is played back (page 199). System Messages This is data that is used in common by the entire MIDI system. These include System Exclusive messages for transferring data unique to each instrument manufacturer and Realtime messages for controlling the MIDI device. Message Name Operation/Panel Setting System Exclusive Message Effect type settings (Mixing Console), etc. Realtime Messages Clock setting, Start/stop operation The messages transmitted/received by the instrument are shown in the MIDI Data Format and MIDI Implementation Chart in the separate Data List. MIDI MIDI Transmit channel 2 cable MIDI Receive channel 2 n The instrument's keyboard and internal tone generator are also connected by MIDI. → LOCAL CONTROL (page 198) For example, several parts or channels can be transmitted simultaneously, including the Style data (as shown below). Using Your Instrument with Other Devices 194 CVP-405/403/401 Owner's Manual