rubberband: Rubberband ( Audio Time Stretching Library ) rubberband: rubberband: Rubber Band Library is a high quality software library for audio rubberband: time-stretching and pitch-shifting. It permits you to change the rubberband: tempo and pitch of an audio stream or recording dynamically and rubberband: independently of one another. rubberband: rubberband: rubberband: rubberband: rubberband: