Transient Selection

selecttransient

replace Replace Selection: Replace the current selection with a new selection.
add Add to Selection: Add the new selection to the current selection (or press Shift).
sub Subtract from Selection: Subtract the new selection from the current selection (or press Alt).
intersect Intersect with Selection: Intersect the new selection with the current selection (or press Shift+Alt). This will keep the common areas between the two selections.

Tolerance: Power threshold relative to the clicked position defining the boundaries of the detected transient.

Maximum Height: Maximum height in hertz of the selected transient.

check Sample All Layers: Use all layers to perform the transient detection, not just the active layer.