Chuck Basics Chunity - Workshop Vitor Guerra Rolla Postdoctoral - PowerPoint PPT Presentation

Chuck Basics Chunity - Workshop Vitor Guerra Rolla Postdoctoral Fellow vitorgr@impa.br

Chuck Intro ● Ge Wang ● Designed around time => now ● Parallel logic ● Simple-text => easy to read ● Real-time sound synthesis ● MIDI compatible

Download and Installation chuck.stanford.edu OSX / Windows / Linux MiniAudicle – Text editor – Virtual machine monitor – Console Monitor

Summary Hello World Alarm MIDI keys Panning Arrays Hi-hat

Hello Sine Print to console gain Hello Sine! time SinOsc cycles Digital Audio Converter => dac => some duration to now

Hello Sine Waveforms SinOsc SqrOsc TriOsc SawOsc

Data Types and Variables

Time in Chuck time and dur are native types time: a point in time dur: a length of time Only by manipulating now => advance time

Time in Chuck Special properties of now when read: gives us the current chuck time when modified: moves time along in Chuck Chucking a duration to now advances time while automatically suspending your code and letting sound generate Until you advance time, you are working at a single point in time

Time in Chuck Alarm example

MIDI Introduction Std.mtof() and Std.ftom()

MIDI Introduction

Std Library - Unit Conversion

Math Library – Random Numbers Math.random() int Math.random2(int min, int max) in between int Math.randomf() float in the range [0,1] Math.random2f(float min, float max) in between float Math.srandom(int)

Math Library

Math Library

Audio Panning dac.left & dac.right & dac.chan(int) Pan2 [-1.0, 1.0] Math.sin(float x)

Arrays Block of memory stringed together used to make a “list” or “group” of data.

Array Loop <<< A.cap() >>>; for(0 => int i; i < A.cap(); i++){ ...

ADSR Envelope

hi-hat  noise  ADSR envelope  volume  max  high pass filter  0,002  0,01  0,1  time (seconds)  random();

Thank you