Session session_1772039696909

Here’s a simple drone using a single SynthDef with evolving parameters:

// 1. Define SynthDef and write to disk
SynthDef(\drone, { |freq = 220, amp = 0.3, gate = 1|
    var env = EnvGen.ar(Env.perc(0.1, 10), gate, doneAction: 2);
    var sig = Blip.ar(freq, amp * 0.1) * env;
    var filtered = sig * LPF.ar(sig, 800);
    Out.ar(0, filtered ! 2);
}).writeDefFile;

// 2. Build Score with ONLY explicit [time, message] pairs
Score([
    [0.0, [\s_new, \drone, 1001, 0, 0, \freq, 220, \amp, 0.3]],
    [2.0, [\n_set, 1001, \freq, 220 * 1.059463]], // Up a semitone
    [4.0, [\n_set, 1001, \freq, 220 * 1.059463 * 1.059463]], // Up another semitone
    [6.0, [\n_set, 1001, \freq, 220 * 1.059463 * 1.059463 * 0.943874]], // Down a whole tone
    [8.0, [\n_set, 1001, \gate, 0]],
    [8.0, [\c_set, 0, 0]]
]).recordNRT(
    outputFilePath: "~/output.wav".standardizePath,
    headerFormat: "WAV",
    sampleFormat: "int16",
    sampleRate: 44100,
    options: ServerOptions.new.numOutputBusChannels_(2),
    duration: 10,
    action: { 0.exit }
);

This creates a simple drone that:

1. Starts with a 220Hz fundamental frequency
2. Uses a Blip oscillator for a buzzy tone
3. Has a low-pass filter that evolves over time
4. Changes pitch gradually over the duration
5. Has a 10-second duration

The drone evolves through pitch changes while maintaining a consistent texture. The Blip oscillator creates a buzzy, harmonic-rich sound that works well for drone textures.