Timbre.js

system requirements: Chrome 14- or Firefox 4-

Scale

Scale

Constructor

scale = T("scale", scale="major", root=440, octave=0);
scale = T("major", root=440, octave=0);
scale = T("minor", root=440, octave=0);

// scale  [String] "major", "minor", "ionian", "dorian", "phrigian", "lydian"
//                 "mixolydian", "aeolian", "locrian", "wholetone", "chromatic", "ryukyu"
// root   [Object] root frequency
// octave [Number] octave shift
        

Properties

scale.scale;  // [String]
scale.root;   // [Object]
scale.octave; // [Number]
        

Methods

Events

Example: Switch major/minor scales

timbre.utils.exports("atof", "range", "random.choice");

var array = T(range(8)); // same as T([0, 1, 2, 3, 4, 5, 6, 7]);
var scale = T("scale", "major", atof("C4"), array);

var synth = T("sin", scale);
var timer = T("interval", 250, array);

synth.onbang = function() {
    scale.scale = (scale.scale === "major") ? "minor" : "major";
};
synth.onplay = function() {
    timer.on();
};
synth.onpause = function() {
    timer.off();
};

synth.play();    
        

Example

timbre.utils.exports("atof","bpm2msec", "range",
                     "random.choice", "random.shuffle");
var bpm = 138;
var array = T(shuffle(range(16))).set("repeat", 3);
var scale = T("scale", "minor").append(array);

var arp = T("*", T("sin", scale, 0.4),
                 T("perc", 450).bang());

var pad = T("*", T("+", T("sin", T("*", 2, scale.root).kr()),
                        T("sin", T("*", 3, scale.root).kr())),
                 T("+tri", 8, 0.4),
                 T("adsr", 2500, 10000).bang());

var synth = T("efx.delay", T("+", arp, pad));

var timer = T("interval", bpm2msec(bpm, 8), function() {
    array.bang();
    arp.args[1].bang();
});

array.onended = function() {
    scale.root.value = atof(choice(["A3","G3","F3","E3","D-3"]));
    array.reset();
    pad.args[2].bang();
};

synth.onbang = function() {
    scale.scale = (scale.scale === "major") ? "minor" : "major";
    shuffle(array.value);
};
synth.onplay = function() {
    timer.on();
};
synth.onpause = function() {
    timer.off();
};
    
synth.play();
        

See Also:

T("array")