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Chapter 5. Editing Sound > Selecting Using Zero Crossing Points

Selecting Using Zero Crossing Points

A zero crossing point is a point in an audio file where the amplitude is zero. These are usually good places to make edits because the chance of an audible artifact (a clicking or popping noise, for example) resulting from any edit you make is greatly reduced. When you've made a selection in Edit view, you can have Audition fine-tune your selection so that it begins or ends at the nearest zero-crossing point by using the Edit > Zero Crossings menu (Figure5.10).

  • Adjust Selection Inward: Locates and shrinks your selection to begin and end at the most convenient zero crossing points within your selection; this can also be accomplished by clicking the Zero Crossings button on the toolbar (Figure 5.11).

    Figure 5.11. The Zero Crossings button on the toolbar adjusts your selection inward to the closest available zero crossing points.

  • Adjust Selection Outward: Locates and extends your selection at both ends to the nearest zero crossing points outside your selection.

  • Adjust Left Side to Left: Extends the left edge of your selection leftward to the next zero crossing point.

  • Adjust Left Side to Right: Extends the left edge of your selection rightward to the next zero crossing point.

  • Adjust Right Side to Left: Extends the right edge of your selection leftward to the next zero crossing point.

  • Adjust Right Side to Right: Extends the right edge of your selection rightward to the next zero crossing point.


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