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

Vitor Guerra Rolla

Postdoctoral Fellow vitorgr@impa.br

Chuck Basics Chunity - Workshop

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 Hello Sine! SinOsc Digital Audio Converter => dac => some duration to now

cycles gain time

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  high pass filter

 time (seconds)  volume  0,002  0,01  max  0,1  random();

Thank you