From CCRMA Wiki
Homework #3: "Generative Drum Machine + Soundscape"
In this assignment, you are to create a live generative musical system in ChucK, defining its parameters and creating a piece of music using the system (via real-time high-level input).
Due date: 2011.2.22 11:59:59pm (or thereabout), Tuesday.
(NOTE: no late submissions will be accepted for this assignment)
Tools at your disposal
- keyboard, mouse
What to do:
- create a software system in ChucK that generates music "automatically" or "semi-automatically" (i.e., with limited "high-level" human interaction)
- a core component of this should be a generative drum machine
- also think about a overall generative soundscape the envelopes the drum machine
- use some of the synthesis elements we talked about (e.g., SinOsc, TriOsc, SqrOsc, Noise, Impulse, Step, ResonZ, OnePole, OneZero, BiQuad, LPF, HPF, ADSR, STK instruments, Comb filters etc.)
- use some of the technique we talked about (e.g., shreds, events, chance, lookup tables, Markov chains, etc.)
- expose some high level parameters (e.g., density, excitement, mood, texture) and control them using input
- for example: mouse, keyboard,
- (optional): use audio analysis as a control for the synthesis (e.g., using ChucK Unit Analyzers)
- here are some example ideas (you can use, combine, extend these, or go with something else altogether)
- modeling playing style of something percussive, or a group of instruments ("real" and/or imagined)
- model a particular compositional style (e.g., "classic" Musique Concrete, a certain approach to minimalism)
- leverage or musically sonify a mathematical model or a computer algorithm
- a system that somehow evolves over time, giving a set of starting parameters
- invent something new/crazy!
- it might be helpful to design/partition your system into modules that you can exert independent control over, or that take care of different types of tasks/sounds in the system
- create/perform a composition using your system, paying attention to overall form, density, and texture throughout (think "sonic clouds"...)
Not all of these are directly relevant, but may serve as basic building blocks...
- for mapping your keyboard/mouse to your generative clouds S.M.E.L.T.
- Graham Coleman's most excellent tutorial on ChucK for Music
- ChucK unit generator reference (check out the section on STK instruments, as potential starting points for ready-to-go instruments)
- ChucK examples
- shake-o-matic : virtual shaker player, again a potential building block.
As usual, turn in all files by putting them in your Library/Web/220b/hw3/ directory and email the link to Ge and Nick.
- 1) create a hw3/ directory, and put all the stuff below in there:
- 2) index.html should go into the hw3/ directory
- 3) all related source/sound files (.wav/.ck) NOTE: You must turn in a .wav file showcasing a performance on your system.
- 4) a short README text (readme.txt) file that:
- specifies instructions on running your programs
- describes your process/adventure, and perhaps the ideas (technical/aesthetic) behind the composition
- gives credit, if needed, for the sounds you are using
- describe any difficulties you encountered in the process
- 5) email Ge And Nick
Have fun with it!