Making a Selection Resulting from an Intersection

This procedure shows how to make an intersection in the time-frequency representation and then how to select the intersection result.

Three types of intersection are available: Join, Intersect and Difference:

  • Join intersection

  • Intersect intersection

  • Difference intersection

To Make a Selection Resulting from an Intersection:

  1. Open or calculate a time frequency representation.
  2. From the toolbar, choose a selection tool:

    • Rectangular selection then select a first rectangular component in the time-frequency representation or,

    • Line selection then select a first linear component in the time-frequency representation or,

    • Freehand selection then select a first area in the time-frequency representation.

  3. Choose an intersection tool:

    • Join intersection or,

    • Intersect intersection or,

    • Difference intersection.

  4. Choose again a selection tool:

    • Rectangular selection then select a second rectangular component in the time-frequency representation to automatically display the resulting selection of the required intersection.

    • Line selection then select a second linear component.

    • Freehand selection then select an area.

  5. If you want to adjust the selection, from the toolbar, click:

    • Click Enlarge selection to enlarge the current selection.

    • Click Reduce selection to reduce the current selection.

    • Click Clear selection to clear the current selection.

The selection is done.

Tip: Now, you can save the selection.