Session slack_1771969497559789

Practice Journal

Hey Dylan! I’m EMPI, your AI music collaborator. We’re working with SuperCollider today under condition B. What kind of sound world are you feeling? I’ve been thinking about those bright, treble-heavy textures from Rick Astley’s track - maybe we could explore that direction? Or we could dive into something more rhythmic, inspired by Larry June’s driving pulse. What’s calling to you?

Got it! Let’s create a melody with an octave in the tenor range, inspired by our listening history. I’ll make sure to avoid clipping by keeping the amplitude under control. Here’s a SuperCollider score that should do the trick:

// 1. Define SynthDef and write to disk
SynthDef(\melody, { |freq = 440, amp = 0.3, gate = 1|
    var env = EnvGen.ar(Env.asr(0.01, 1, 0.3), gate, doneAction: 2);
    var sig = SinOsc.ar(freq) * env * amp;
    sig = LPF.ar(sig, 5000); // Smooth out the high frequencies
    Out.ar(0, sig ! 2);
}).writeDefFile;

// 2. Build Score with ONLY explicit [time, message] pairs
Score([
    [0.0, [\s_new, \melody, 1001, 0, 0, \freq, 261.63, \amp, 0.3]], // C4
    [0.5, [\s_new, \melody, 1002, 0, 0, \freq, 293.66, \amp, 0.3]], // D4
    [1.0, [\s_new, \melody, 1003, 0, 0, \freq, 329.63, \amp, 0.3]], // E4
    [1.5, [\s_new, \melody, 1004, 0, 0, \freq, 349.23, \amp, 0.3]], // F4
    [2.0, [\s_new, \melody, 1005, 0, 0, \freq, 392.00, \amp, 0.3]], // G4
    [2.5, [\s_new, \melody, 1006, 0, 0, \freq, 440.00, \amp, 0.3]], // A4
    [3.0, [\s_new, \melody, 1007, 0, 0, \freq, 493.88, \amp, 0.3]], // B4
    [3.5, [\s_new, \melody, 1008, 0, 0, \freq, 523.25, \amp, 0.3]], // C5 (octave up)
    [4.0, [\n_set, 1001, \gate, 0]],
    [4.0, [\n_set, 1002, \gate, 0]],
    [4.0, [\n_set, 1003, \gate, 0]],
    [4.0, [\n_set, 1004, \gate, 0]],
    [4.0, [\n_set, 1005, \gate, 0]],
    [4.0, [\n_set, 1006, \gate, 0]],
    [4.0, [\n_set, 1007, \gate, 0]],
    [4.0, [\n_set, 1008, \gate, 0]],
    [8.0, [\c_set, 0, 0]]
]).recordNRT(
    outputFilePath: "~/melody.wav".standardizePath,
    headerFormat: "WAV",
    sampleFormat: "int16",
    sampleRate: 44100,
    options: ServerOptions.new.numOutputBusChannels_(2),
    duration: 8,
    action: { 0.exit }
);

This creates a simple ascending melody that starts in the tenor range and moves up to the octave. I’ve kept the amplitude at 0.3 to avoid clipping, and added a low-pass filter to smooth out the high frequencies. The notes are spaced out to give each one time to ring out. What do you think? Should we tweak the melody, the timing, or the timbre?

Got it! Let’s invert the melody and add an arpeggiator. Here’s the updated SuperCollider code:

This creates an inverted version of the original melody, with the arpeggiator playing the notes in a repeating pattern. I’ve kept the amplitude at 0.3 to avoid clipping, and added a low-pass filter to smooth out the high frequencies. The arpeggiator is set to play the notes in a quarter-note pattern, but you can adjust the timing to make it faster or slower. What do you think? Should we tweak the arpeggiator speed, the melody, or the timbre?