While previewing effects, you can adjust selections and the current-time indicator in the Editor panel. (The Normalize and Stretch effects are exceptions.)
In the Waveform Editor, the Effects Rack lets you apply groups of effects. (It doesn’t provide process effects such as Noise Reduction, which must be applied individually.)
To compare processed audio to original audio, select and deselect the main Power button in the lower left corner of the rack, or the Power buttons for individual effects.
To store settings, save a rack preset. (See Use effect presets.)
As you edit settings, watch the Levels panel to optimize amplitude.
You can identify process effects by the word process in menu commands. These processing-intensive effects are available only offline in the Waveform Editor. Unlike real-time effects, process effects can be applied only individually, so they aren’t accessible in the Effects Rack.