Some features in the Windows version of Adobe Audition 3.0 are not available in CS5.5. Examples include Audition-specific clipboards, CD burning, MIDI, the metronome, some file formats and effects, and control surface support. For a complete list, see Adobe Audition 3.0 features replaced or not implemented in CS5.5.
Copy or cut audio data
Paste audio data
Mix audio data when pasting
Invert Copied Audio
Reverses the phase of copied audio, either exaggerating or reducing phase cancellation if the existing audio contains similar content. (To understand phase cancellation, see How sound waves interact.)