Apple Logic Pro 8 - Manual (Page 348)

348 Chapter 13 Creating Your Arrangement
Transposition
All note events contained in the MIDI region are transposed up or down by the
selected amount during playback. Even complete folders can be instantly transposed in
this way. If several individual MIDI regions within the folder have already been
transposed, the relative differences between them are retained.
If you want to transpose by octaves, click on the arrows to the right of the
Transposition parameter. This opens a pop-up menu that allows direct octave
transpositions.
To guard against drum notes, and so on being transposed, an instrument channel’s
Parameter box contains a No Transpose checkbox. If you activate this option, the
transpose parameter is ignored in all MIDI regions played by this instrument channel
strip (including green Apple Loops added to tracks routed to instrument channels).
Velocity
All notes in the relevant MIDI region are offset by the selected value. Positive values
add to the originally recorded velocity, and negative ones subtract from it, although
naturally it is impossible to go outside the limits defined by the MIDI Standard (0–127).
If you select a velocity offset that exceeds the maximum or minimum possible value for
a particular note, that note will play at the extreme possible range. As an example, a
setting of +20 will cause a note with a velocity of 120 to play at 127.
Dynamics
This parameter also affects the velocity values of notes, but instead of adding or
subtracting a fixed amount, the differences between soft and loud notes (the
dynamics) are increased or decreased. This works in a similar way to a compressor or
expander. Values above 100% expand the dynamics, thereby increasing the difference
between loud and soft, while values below 100% compress the dynamics, reducing the
differences between loud and soft.
The Fixed setting causes all notes to be transmitted at a velocity value of 64. When
used in conjunction with the Velocity parameter (see above), it is possible to set any
fixed velocity value.