Command

Description

Extend to Next Zero

This option forces both edges of a selection to the next zero-crossing of the waveform. Performing edits at zero-

 

crossings reduces the possibility of introducing glitches in your sound file.

 

Tips:

 

• You can also press Z.

 

• The Editing tab in the Preferences dialog allows you to choose whether this is a negative, positive, or any zero-

 

crossing.

Extend Edge to Next Zero This option forces the active edge of a selection to the next zero-crossing of the waveform. Performing edits at zero-crossings reduces the possibility of introducing glitches in your sound file.

The active edge of a selection is defined by the blinking cursor. Press Home or End to change the active edge.

Tips:

•You can also press Shift+Z.

•The Editing tab in the Preferences dialog allows you to choose whether this is a negative, positive, or any zero- crossing.

Disabling auto-snapping at high magnifications

When editing an audio file displayed at a high magnification, you may want to turn off snapping to time or zero-crossings. This allows you to position a selection’s start and end points exactly where you choose.

1.From the Options menu, choose Preferences, and click the Editing tab.

2.Select the Disable auto-snapping below 1:4 zoom ratios check box and click OK.

Quantizing to frames

From the Options menu, choose Quantize to Frames to force edits to occur on project frame boundaries. This setting is independent of grid and marker snapping and is useful when editing audio for video and creating disc-at-once CD projects.

When Quantize to Frames is turned on, the following actions will always occur on frame boundaries:

•Positioning the cursor

•Making selections

•Placing markers and regions

Note: If you drag to a snap point that does not occur on a frame boundary when Quantize to Frames is enabled, the snap point will be quantized to the nearest frame boundary.

NAVIGATING, ZOOMING, AND SELECTING 97