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Set this so you can hear the guitar notes decay naturally. * When set to "0", the Noise Suppressor will become OFF condition * If the Threshold is set too high, it may cut out soft guitar notes as well as noise! This might be the problem if you are playing but nothing's coming out. 40 Section IV Section IV: Using MIDI The ME-X is equipped with M!D! OUT connector. These will enable you to change patches and setting data of other MIDI devices. About MIDI MIDI stands for Musical Instrument Digital Interface. It is a world-wide standard that allows digital musical instruments to transmit and receive performance data, Patch switching messages, and other kinds of digital information. This data will be readable and understandable by any instrument conforming to the MIDI standard, regardless of who made it or even what kind of instrument it is. In the MIDI standard, "performance data" means data describing things like which notes are played at what volume, what sounds are being selected, or which pedal is depressed, for example. These are known as MIDI "messages." 1. Exchanging MIDI Messages First, we'll explain how MIDI messages are exchanged. About MIDI Connectors MIDI messages are exchanged through three MIDI jacks. MIDI cables are connected to these ports depending on your requirements. MIDI IN: Receives messages from external MIDI devices. MIDI OUT: Transmits messages to external MIDI devices. MIDI THRU: Retransmits the messages received via theMIDI IN without any change * The ME~X only has a MIDI OUT jack. MIDI Channels With MIDI, you can use a single cable to transmit messages to many MIDI devices at once, with each device getting only the specific messages intended for it. This is the origin of the MIDI channel concept. You might think of MIDI channels as similar to television channels. When you switch television channels, you can see programs from a variety of different TV stations, but you must be receiving on the same channel as the TV station is broadcasting in order to see the program. the station (program) you want. The cable coming from the antenna carries the TV signals for a variety of broadcasts. MIDI has channels too, numbered from 1 to 16, and only when the transmitting channel is the same as the receiving channel is the MIDI data transmitted. Station A On a TV, you switch channeis to v 2. The Main MIDI Messages Handled by the ME-X There area variety of different kinds of MIDI messages, and each has information about a particular kind of MiDI performance nuance. MIDI messages are broadly divided into Channel messages (those that have information specific to a channel), and System messages (information that is not channel-specific but applies to the system as a whole). * The ME-X does not handle System messages. Channel Messages The MID! messages that transmit the actual performance data are Channel messages, and these are the ones that are doing most of the actual work of controlling the instrument. What can be controlled by each MIDI message is something that varies from one instrument to the next, and is designed into that instrument. Program Change Messages Generally, these Patch-changing messages enable you to switch between as many as 128 different program numbers. Control Change Messages Control Change messages provide information that adds expressiveness to what you play. Each function is grouped by a control number, and the functions that can be controlled vary from one MIDI device to another. The ME-X outputs information on the operation of the expression pedal as Control Change messages with a fixed control number. fr MIDI Implementation Chart You can swap data with a variety of different instruments using MIDI, but you can't give a MIDI instrument a capability it wasn't designed with. That is, if a MIDI device isn't designed to respond to a certain kind of MIDI message, there's no point in sending it that message. The messages that can be exchanged between two connected MIDI devices are only those that both instruments can understand and respond to. You can quickly determine what MIDI messages are common to two devices by looking at the MIDI Implementation chart that is included in every MIDI instrument's owner's manual. The chart dimensions are standardized, so you can physically match the two charts and see at a glance what will work and what won't. * For more detailed information about handling MID! messages; refer to "MIDI Implementation" on page 51. ^ ■ ■ ...... - - ^ 43 Section IV: Using MIDI So What Can You Do with MIDI? Here's what you can do with the ME-X hooked up to external MIDI devices. * The ME-X is set permanently to MIDI channel 1. When sending MIDI data, be sure to set the receiving MIDI device to channel 1 as we//, or you won't be able to exchange messages. 1. Selecting Patches Via MIDI You can use MIDI Program Change messages to switch Patches on an external MIDI device by switching Patches of the ME-X. The Patch numbe...