Apple Logic Pro 7 User Manual download pdf (Page 600)

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600 Chapter 18 Tempo

Create Tempo Curve

This function lets you create numerous tempo change events with just a few

parameters, and provides a smooth overall change in tempo.

Three kinds of tempo curves are available from the Curve Type pull-down menu. Each of

these offers a Curvature parameter, which determines if the tempo should speed up or

slow down, dependent on whether positive or negative curvature values are entered.

To create a tempo change in the Tempo Operations window:

1 Select the desired Curve Type.

2 Use the Position or Time settings to determine the area that the tempo change should

take place across: the left entry is the start point, the right entry is the end point.

3 Enter the desired start and end tempos in the Tempo line.

4 Finally, set the Curvature and watch the graphic display, as the tempo changes.

Note: The Continue with new Tempo checkbox determines whether; the original tempo

resumes after the tempo curve ends (unchecked), or the new tempo (the last tempo

change event in the curve) is maintained (checked).

The concentration of graphical tempo events can be altered with the Density

parameter. Values of 1/8 and finer should only be used if really necessary (with very

slow tempos and fast tempo changes, for example). Even finer settings (1/16 and 1/32)

can be entered by holding down Option.

Note: Don’t select a resolution higher than 1/8 or finer, just to make the curve look

smoother.

Create Constant Tempo

This function creates a constant tempo in any selected area. The default setting assigns

an average tempo for the selected section.

If you want to remove all tempo variations between two points, without changing the

SMPTE time for the right-most position, just click Do It.

Don’t forget the Continue with new Tempo checkbox, which keeps the new tempo or

returns to the initial tempo.

Scale Existing Tempo Changes

This handy function alters existing tempo changes proportionally (scales them). This

enables you to speed up an entire song section, without losing the relationships

between any subsequent tempo changes within the area. Scaling is done by

percentage. Positive percentage values speed up sections, and negative ones slow

them down.

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Apple Logic Pro 7 User Manual Page 600

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