Apple Logic Express 7 - Manual (Page 307)

Chapter 12 Event List 307
Pitchbend Events
Pitch bend events are used to continuously vary the pitch. They are usually generated
by a centered pitchbend wheel or joystick on your keyboard.
Num
Fine pitch bend division (LSB). Many keyboards transmit a value of 0. If the pitch bend
wheel has an 8-bit resolution, you will see values of 0 or 64 here.
Val
The effective pitch value (MSB) of 0 to 127. A value of 64 corresponds to the mid-way
setting of the wheel.
Length/Info
The 14-bit value is displayed in this column as a decimal figure ranging from
−
8192 to
8191. The value in this column may be edited in the usual way.
Control Change Events
These event types are used to transfer MIDI controllers (modulation, sustain, volume,
and pan, as examples).
Num
The number of the controller. All of the various MIDI controllers (such as the
modulation wheel or sustain pedal) are assigned their own numbers (#1 or #64
respectively). Some other controllers are also defined, such as volume (#7) or pan (#10).
Controllers that are defined in the MIDI Standard are described in the Length/Info field.