Aftertouch events – Apple Logic Pro 9 User Manual
Page 720
• Other manufacturers use various methods of dividing internal memory locations into
groups (or banks) and sounds. The most common is divisions into 8 groups of 8
sounds, each numbered 1 to 8. These devices respond to program numbers 0 to 63
by addressing storage locations 11 to 88. The instruction manuals for these devices
should contain conversion tables to assist you.
• Num(ber): Bank select. Normally you will see this symbol (-), which means no bank
select message will be sent. If you assign a number between 0 and 126, a bank select
event is sent before the program change event.
This allows you to address the different sound banks (preset, internal, card, and so on) of
connected MIDI keyboards and modules. The synthesizer must be able to recognize
controller 32 as bank select, but unfortunately this standard is not used by all
manufacturers.
If you have any problems with bank select, check your synthesizer’s manual to see whether,
and how, it responds to bank select commands.
Note: You can change the type of bank select messages sent by Logic Pro (see
), if necessary for your devices.
Aftertouch Events
Aftertouch (or channel pressure) events are generated by a mechanical pressure sensor
beneath some MIDI keyboards. These events can be used to modulate the synthesizer
sound. All note events on a particular MIDI channel are affected. This means that applying
pressure to one note in a held chord affects all notes in the chord.
• Num(ber): This column is unused, as aftertouch events only have one data byte.
• Val(ue): Displays the amount of pressure on the keyboard (0 to 127).
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Chapter 25
Editing MIDI Events in the Event List