ChucK

ChucK is a programming language for making sound. It is concurrent and strongly timed, meaning that the passage of time is something the programmer controls directly, which suits real-time audio synthesis, composition and performance. It was created and chiefly designed by Ge Wang as a graduate student working with Perry R. Cook. The syntax is loosely C-like and object-oriented with strong static typing, and it is built around the ChucK operator, written as an arrow, which sends data from left to right through a chain of sound generators. Programs are compiled to bytecode for the ChucK virtual machine, and the system supports live coding, so code can be added, changed or removed while a program is running. Its libraries cover MIDI, Open Sound Control, unit generators such as oscillators and filters, and file and serial input and output. It has been used by the Princeton Laptop Orchestra and in Smule applications, and is distributed under the GNU General Public License.