Apple Logic Pro X - Manual (Page 476)

Chapter 15 Advanced edit features 476
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Crescendo: This only works if the Inside Position selection condition is selected (crescendos
need start and end points). Crescendo creates a smooth alteration of the current parameters,
between the set value boundaries.
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Rel.Cres: This only works if the Inside Position selection condition is selected. The effect is
similar to that achieved by Crescendo, but the previous values of the parameters being
altered are taken into account when the crescendo is created, preserving the relative feel of
the original.
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Use Map: The set map will be used when this operation is selected. For more information, see
Use the map on page 476.
Set the values for an operation
m Use the mouse as a slider, or enter a value directly into the field.
Use the map
The map display contains 128 vertical bars that reflect the full MIDI value range (from 0 to 127),
and provide a visual overview of the transformation.
Each bar represents a particular MIDI value that can be mapped to a different value. The type of
event, and operations, are determined in the Selection Conditions and Operations areas.
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The map is visible only when chosen in one of the Operations pop-up menus. Appropriate
selection conditions must also be set, or the map does not appear.
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The map is universal, which means that it remaps one MIDI value to another.
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The map does not know what type of MIDI data is sent to it. It only affects the value of
the data.
This means that one map can be used to simultaneously alter the pitch, velocity, and length
values of incoming note events, for example.
Map usage example
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Each of the bars could represent a MIDI note number (from 0 to 127) value.
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By default, there is a 1:1 relationship for each bar, where value 1 = value 1, value 15 = value 15,
and so on, throughout the 128 bars. Applying this to MIDI note numbers, bar 60 = C3 (middle
C), bar 61 would represent C#3, bar 62 = D3, and so on.
The default and mapped values are shown in the two fields at the lower left of the map area.
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You can alter these values directly in the fields, or by dragging any of the bars vertically. As you
do so using either method, the corresponding field or bar is updated.
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If you alter the bar 60 (middle C) value to show 72 in the “mapped to” field, this value is
remapped accordingly when the Transform operation is applied.
This results in all MIDI note number 60 messages being transformed into MIDI note number 72
messages (effectively transposing all C3 notes to C4).