Yamaha EZ150 Owner's Manual - Page 54

MIDI The EZ-150 also features MIDI terminals, allowing you to interface the EZ-150 with other MIDI instruments and devices. Receives MIDI data from the connected sending device. Transmits MIDI data (keyboard performance) to the connected device. I About MIDI MIDI (Musical Instrument Digital Interface) is a worldwide standard that is built into many electronic musical instruments and other digital music related devices, allowing them to be connected and "communicate" with each other. For two MIDI instruments to communicate, they must be connected by MIDI cables. In a basic example, the MIDI IN and MIDI OUT terminals of the EZ-150 could be connected to the MIDI OUT and MIDI IN terminals of a sequencer, allowing you to record and play back performance data from the EZ-150. The instruments communicate with each other by sending "messages" or MIDI data. The sending instrument usually assigns the data to one of sixteen MIDI channels, then transmits it over the MIDI cable. The cable itself, however, is not divided up into sixteen channels. Just as with a television set that receives programs on different channels, it is up to the receiving instrument to "tune into" the proper MIDI channel. If the sending and receiving channels on the respective instruments do not match, the receiving instrument may not understand or respond to the one sending. I How Can MIDI be Used In the simple, yet powerful MIDI application example below, the Yamaha QY70 Music Sequencer is used to record and play back performance data played on the EZ-150 keyboard. Before actually recording to the sequencer, press the [STYLE] button once or twice to make sure that the current settings are sent. 01 Connect the MIDI OUT of the EZ-150 to the MIDI IN of the QY70 Connect the MIDI IN of the EZ-150 to the MIDI OUT of the QY70 • On the EZ-150, the following channels (eight total) are enabled for MIDI reception: 1, 2, 3, 4, 5, 6, 7, 10. The MIDI transmit channels are fixed to the following data: Ch. 1 : Keyboard, harmony Ch. 2 : Bass Ch. 3 : Chord Ch. 4 - 7 : Other Ch. 10 : Rhythm • Parts that have been recorded using the EZ-150 should also be played back from the EZ-150. Data may not play back as expected when using other sound sources (such as the internal sounds of the QY70). Also, a connected sound source may sound at a different octave from that originally played on the EZ-150. • MIDI data cannot be transmitted during song playback. • Avoid using MIDI cables 15 meters or longer, since doing so can result in MIDI errors. MIDI Data and Light Guide • With the Light Guide feature, you can see the incoming MIDI data. MIDI note data received over channel 1 will conveniently light up the appropriate keys when the Light Guide feature is turned on. 54