What is “rubberband” Package?

audio time stretcher tool and library
For more details: http://breakfastquay.com/rubberband/

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install rubberband.

  brew install rubberband

Now, use rubberband!