User Tools

Site Tools


twigs:whatislivecoding

Below are some quick notes about my talk for the TWIGS wiki page.

Pure Data
  • demo: playing a 'noise~' through 'dac~'
  • demo: controlling the pitch of an 'osc~' with a number box and 'mtof'
  • demo: recording input from 'adc~' to an array, then playing it out with a 'metro' and bang and toggle buttons
  • note: DSP chain is visible (thick wires), similar representation to control chain
  • note: difficult to work with recursive data structures, easy to work with event streams


Impromptu
  • demo: setting up midi synthesizer and 'play-note'ing some sound
  • demo: understanding '(now)' and evaluation of whole definitions and their sub-expressions
  • demo: simple temporal recursion playing random notes, live editing of loop guts and callback delay, loop termination
  • demo: complex generative music example with text-to-speech, a main temporal recursion, and stateless part functions
  • note: temporal recursion is a nifty design pattern, rich concurrency in a single thread
  • note: you should schedule yourself to be called back Before you want your sound to play so there is time to compute what to play!
  • note: DSP chain is not 'visible'
  • note: Impromptu is a general livecoding performance tool, not particularly oriented towards music
  • note: expressions can be evaluated on remote virtual machine so collaborators can type locally but act centrally (same applies to ChucK)


ChucK
  • demo: playing a 'Noise' through 'dac', chucking into 'now', overloading of '⇒'
  • demo: controlling the frequency of a 'SinOsc' in an infinite while loop, compared function-call and chucking syntax for pitch generation
  • demo: complex generative music example with multiple shreds, loading sounds from disk, volume ramps, killing shreds interactively
  • demo: reading from accelerometer in rockband guitar controller, mapped to speed of audio playback and corrective pitch shifting
  • demo: analysing noise level with integrated mic to make an expressive, breath-controlled synthesizer from a laptop
  • note: main instrument for the laptop orchestra at Princeton and Stanford


Processing
  • demo: visual synthesis demo, OSC events flow from Impromptu program to Processing
  • note: OSC can connect (via internet protocol) many different tools in many different locations live! (not well supported outside of open-source scene)
  • note: really just Java behind the scenes
  • note: not really livecoding unless the particular program is part of a bigger work
twigs/whatislivecoding.txt · Last modified: 2009/02/24 15:58 (external edit)