1 The Mathematics of Rhythm
The above video contains a demonstration for setting up and playing music on SuperCollider.
First, download this Rhythm Lesson Worksheet.
Then, download SuperCollider: https://supercollider.github.io/download
After you download the Rhythm Lesson Worksheet and SuperCollider, you will also need to download the instrument files linked below.
Copy and paste the text below into a blank SuperCollider document. Replace all of the lines starting with “/Users/elliottgrabill/Documents…” by clicking and dragging the downloaded audio files (as shown in the above video demonstration).
//HIGHLIGHT “s.boot” and press SHIFT + ENTER. s.boot;
//DOUBLE CLICK to the right of the “(” below. Press SHIFT + ENTER.
(
//Tom
= Buffer.read(s, “/Users/elliottgrabill/Documents/Paper Documents/Math/OER Files/Tom.wav”
);
//Bass Drum
= Buffer.read(s, “/Users/elliottgrabill/Documents/Paper Documents/Math/OER AudioFiles/Bass Drum.wav”
);
// Cowbell 1
= Buffer.read(s, “/Users/elliottgrabill/Documents/Paper Documents/Math/OER Files/Cowbell
1.wav”
);
// Cowbell 2
= Buffer.read(s, “/Users/elliottgrabill/Documents/Paper Documents/Math/OER AudioFiles/Cowbell 2.wav”
);
//Tambourine
= Buffer.read(s, “/Users/elliottgrabill/Documents/Paper Documents/Math/OERFiles/Tambourine.wav”
);
// Snare
= Buffer.read(s, “/Users/elliottgrabill/Documents/Paper Documents/Math/OER AudioFiles/Snare.wav”
);
SynthDef(“normal”, {
arg amp = 1, bufnum = 0, rate = 1.066666667, loop = 0, ffreq = 1000, rel = 10; var snd;
var env = Env.new([0, 5, 1, 0], [0.01, 16, 6],[-5, 0, 3]);
var envgen = EnvGen.ar(env, doneAction: 2);
snd = PlayBuf.ar( numChannels: 2, bufnum: bufnum, rate: rate, loop: loop ) * envgen * amp;
Out.ar([0, 1], snd);
}
).add;
~mySynth = Synth(“normal”, [\bufnum, a, \amp, 0.1, \rel, 10]);
)
// EXAMPLE 1
~drum = Pbind(
\instrument, “normal”,
\bufnum, a,
\dur, Pseq([
1, 0.33333, 0.33333, 0.33333, 1, 2,
1, 2
], 15),
\rate, 1
).play;
// EXAMPLE 2
~drum = Pbind(
\instrument, “normal”,
\bufnum, a,
\dur, Pseq([
2, 2, // MEASURE 1
0.5, 0.5, 2.5, 0.5 // MEASURE 2
], 15),
\rate, 1
).play;
// EXAMPLE 3
// TWO RHYTHMS AT THE SAME TIME
t = TempoClock(144/60);
{
~tambourine = Pbind(
\instrument, “normal”,
\bufnum, e,
\dur, Pseq([
1, 0.33333, 0.33333, 0.33333, 1, 2,
1, 2
], 5),
\rate, 1
).play(t);
~drum = Pbind(
\instrument, “normal”,
\bufnum, c,
\dur, Pseq([
1.5, 2.5,
1.5, 2.5
], 5),
\rate, 1
).play(t);
}.fork(t);
// EXAMPLE 4
// cCHANGING THE TEMPO
t = TempoClock(144/60);
{
~tambourine = Pbind(
\instrument, “normal”,
\bufnum, e,
\dur, Pseq([
1, 1, 0.5, 1,
0.5, 0.5, 0.5, 0.5, 0.5
], 5),
\rate, 1
).play(t);
~drum = Pbind(
\instrument, “normal”,
\bufnum, c,
\dur, Pseq([
1.5, 1.5,
1.5, 1.5
], 5),
\rate, 1
).play(t);
}.fork(t);
