Alesis D4 manual Midi Message Basics, Channel Messages, 3A Voice Messages

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machines) can often transmit and/or receive additional MIDI timing messages that keep other rhythmically-oriented units in a system synchronized with each other.

An optional MIDI Thru jack provides a duplicate of the signal at the MIDI In jack. This is handy if you want to route MIDI data appearing at one device to another device as well. Some devices, like the D4, switch their MIDI Out between the Out and Thru functions.

Example: Suppose a keyboard’s MIDI Out feeds the D4’s MIDI In. If the D4’s MIDI Out is set to function as a Thru jack, you could patch it to the input of an MMT-8 sequencer. Thus, the keyboard would control the D4 and be able to record data into the sequencer. Note that any notes generated by the D4 would be recorded into the sequencer as well.

6.2 MIDI MESSAGE BASICS

The are two main types of MIDI messages. Channel messages, which are channel- specific, consist of Voice and Mode messages. System messages, which do not have a channel number and are received by all units in a system, include Common, Real Time, and Exclusive messages.

6.3 CHANNEL MESSAGES

6.3A Voice Messages

A synthesizer’s voice is the most basic unit of sound generation. Usually, each voice plays one note at a time, so the number of notes you can play at one time will be limited by the available number of voices. MIDI messages that affect voices include:

Note On Corresponds to a key being pressed down; values range from 000 (lowest note) to 127 (highest note). Middle C is 60.

Note Off Corresponds to a key being released; values are the same as note on.

Velocity Corresponds to dynamics; values range from 001 (minimum velocity) to 127 (maximum velocity). A velocity of 000 is equivalent to a note-off message.

Pressure Indicates the pressure applied to a keyboard after pressing a key.

Program Change Sending a Program Change command from a sequencer or other MIDI keyboard can change synth patches automatically. There are 128 Program Change command numbers.

Also note that not all units number programs consistently. Some number them as 000-127, others as 001-128, and still others arrange programs in banks of 8 programs (such as A1-A8, B1-B8, C1-C8, etc.).

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Contents Alesis Drum SET Management Midi Functions Introduction Principal FeaturesHOOKUP/INSTANT Gratification Return Your Warranty Card NOW2D Hook Up External Triggers rear panel 2A Installation2B Hook Up Audio rear panel 2C Hook Up Midi rear panel2G Select Drum Sets 2E Hook Up Power rear panel2F Turn On Power 2H Audition Different Drum Sounds Page 3A The Voice 2I Assign Drum Sounds to Particular Midi Notes3D Midi Note Range 3C About Defaults3B About the Edit Buffer About the User Interface 4D Editing Parameter Values 4A Function Buttons4B Cursor Buttons 4C Multi-Page Functions4F The Preview Button 4E The Store and Note Chase buttonsSTORING/NAMING AN Edited Drum SET Selecting Drum SetsRecall Alesis Recalling Factory Drum SetsPage Voice Function ButtonsOutput TuneOutput Main Drum SETGroup Button Mode MultiEXT Trig Drumset Root Midi ButtonCopying a Notes Parameters to Another Note Drum SET Root Note Midi FunctionsTurn the Data wheel to select the desired Drum Set root note Channel Omni Thru OFF Program Change EnableMidi Channel Selection Midi THRU/OUT SelectionProg Change on Controllers on Controller EnableMake sure the cursor is under the Controllers status Program Table Program Change TableSave Data VIA Midi 6A Save to DataDisk 7A Load from DataDisk Receive Data from Another Midi DeviceExternal Triggering This is how it works About Trigger ParametersPage Example TRIG01 VCURVE4 Trigger SelectionTRIG02 VCURVE4 Trigger Note SelectionTrigger Velocity Selection Method One Page TRIG03 XTALK30 DCAY10 NOISE00 Trigger Parameter SelectionTrigger Crosstalk Selection TRIG02 XTALK30 DCAY10 NOISE00Page Trigger Noise Level Selection Trigger Dcay Control SelectionTRIG01 GAIN50 Trigger Gain SelectionFootswitch Mode HI HAT Pedal Footswitch Mode8A Understanding Hi Hat Pedal Mode Page Midi Hardware Midi Basics3A Voice Messages Midi Message BasicsChannel Messages Page System Common Messages 3B Mode MessagesVideos on Midi Books on Midi
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