# Difference between revisions of "ChucK/foo.ck"

```// Boolean_Quartet.ck
// This software released under the GNU General Protective License
// experiments with creating music from base n sequences
// four instruments in Boolean logic sequence

// control variables
150 => float frequency;
0.25 => float gain1;  // SinOsc
0.25 => float gain2;  // HF plucked
0.25 => float gain3;  // LF plucked
0.15 => float gain4;  // guitar
2 => int n; // numeric base of the sequence

// gain of each instrument
Gain g1;
Gain g2;
Gain g3;
Gain g4;
gain1 => g1.gain;  // binary count SinOsc's
gain2 => g2.gain;  // high frequency plucked instrument
gain3 => g3.gain;  // low frequency plucked instrument
gain4 => g4.gain;  // screaming guitar instrument

// the background oscillators
SinOsc s[5];
for (0 => int i; i<5; i++) {
// the patches
s[i] => g1 => dac;
// the frequencies
(5 - i) * frequency => s[i].freq;
}

// The plucked treble instrument
Impulse i1;
JCRev r1;
r1.mix(0.02);
BPF f[5];
i1 => f[0] => r1 => g2 => dac;
i1 => f[1] => r1 => g2 => dac;
i1 => f[2] => r1 => g2 => dac;
i1 => f[3] => r1 => g2 => dac;
i1 => f[4] => r1 => g2 => dac;
for (0 => int i; i < 5; i++) {
// the patches
//i1 => BPF f[i] => r1 => dac;
// the quality factors
100 => f[i].Q;
// the frequencies
(i + 1) * frequency => f[i].freq;
}
// the gains
0.5 => f[0].gain;
1.0 => f[1].gain;
0.5 => f[2].gain;
0.5 => f[3].gain;
0.4 => f[4].gain;

// the plucked bass instrument
Impulse i2;
JCRev r2;
r2.mix(0.05);
BPF fb[5];
// the patches
i2 => fb[0] => r2 => g3 => dac;
i2 => fb[1] => r2 => g3 => dac;
i2 => fb[2] => r2 => g3 => dac;
i2 => fb[3] => r2 => g3 => dac;
i2 => fb[4] => r2 => g3 => dac;
for (0 => int i; i < 5; i++) {
// the quality factors
200 => fb[i].Q;
// the frequencies
(i + 1) * frequency => f[i].freq;
// the gains
2.0 / (i + 1) => f[i].gain;
}

// the screaming guitar instrument
SinOsc sg[5];
JCRev rg;
0.20 => rg.mix;
for (0 => int i; i<5; i++) {
// the patches
sg[i] => rg => g4 => dac;
// the frequencies
(i + 1) * frequency => sg[i].freq;
}
// the gains
1.0 => sg[0].gain;
0.8 => sg[1].gain;
0.6 => sg[2].gain;
0.4 => sg[3].gain;
0.2 => sg[4].gain;

// time loop
while (true) {
// print the base for each sequence
<<< "base", n >>>;

// calculate the logic threshold
(n-1) / 2.0 => float t;

// loop in a 5-bit binary sequence and pluck the strings
for (0 => int j1; j1 < n; j1++) {
j1 / 16.0 / (n-1) => s[0].gain;
for (0 => int j2; j2 < n; j2++) {
j2 / 8.0 / (n-1) => s[1].gain;
for (0 => int j3; j3 < n; j3++) {
j3 / 4.0 / (n-1) => s[2].gain;
for (0 => int j4; j4 < n; j4++) {
j4 / 2.0 / (n-1) => s[3].gain;
if (j4 > t) {
// the low frequency plucked instrument
(1.5 * (2 * (n - 1) + j3) / (3 *(n - 1))) * frequency => float freq;
for (0 => int i; i < 5; i++) {
(i + 1) * freq => fb[i].freq;
}
1000.0 => i2.next;
}
for (0 => int j5; j5 < n; j5++) {
j5 / 1.0 / (n-1) => s[4].gain;
// the high frequency plucked instrument
if ((j2 > t) && (j4 > t) || (j5 > t) && (j3 > t)) {
(2 * (j1 + j2 + j3 + j4 + j5) / (5 * (n - 1))) * frequency => float freq;
for (0 => int i; i < 5; i++) {
(i + 1) * freq => f[i].freq;
}
300.0 => i1.next;
}
// the screaming guitar
if ((j3 > t) && (j4 > t)) {
(0.5 * ((j1 > t) + (j2 > t) + (j3 > t) + (j4 > t) + (j5 > t))) * frequency => float freq;
for (0 => int i; i<5; i++) {
(i + 1) * freq => sg[i].freq;
}
}
(n - j5) / (n \$ float) * gain4 => g4.gain;
100::ms => now; // advance time
}
}
}
}
}

// shut off the oscillators
for (0 => int i; i < 5; i++) {
0 => s[i].gain;
}
0 => g4.gain;

// increment the base number
n++;

// advance time between binary counts
<<< "pause" >>>;
3::second => now;
}
```