Timbre.js

system requirements: Chrome 14- or Firefox 4-

FMBell

Example

timbre.utils.exports("random.choice");

var synth = T("+");

function play(f) {
    var op1, op2, op3, op4, op5, op6;
    
    op4 = T("*", T("sin", 100, 0.2),
                 T("perc", 100).bang());
    op6 = T("*", T("sin", f * 9.04, 0.05),
                 T("perc", 2500).bang());
    op5 = T("*", T("oscx", T("+", T("phasor", f * 0.99), op6), 0.1),
                 T("perc", 250).bang()) ;
    op3 = T("*", T("oscx", T("+", T("phasor", f * 1.01), op4, op5), 0.25),
                 T("perc", 2500).bang());
    op2 = T("*", T("oscx", T("phasor", f * 1.025, 0.001)),
                 T("perc", 2500).bang());
    op1 = T("*", T("oscx", T("+", T("phasor", f * 0.9998), op2), 0.08),
                 T("perc", 3500).bang());
        
    synth.append( T("+", op1, op3) );
    if (synth.args.length > 4) synth.args.shift();
}

var timer = T("interval", 800, function() {
    var m, k1, k2;
    
    k1 = choice([-1,0,0,3,3,3,7,7,8,9]);
    k2 = choice([-1,-1,-1,3,3,5,7,8,10,11]);
    
    if (k1 !== -1) {
        if (k2 === -1) {
            m  = k1 + 57 - 12;
            play(timbre.utils.mtof(m + 0));
        } else {
            m  = k1 + 57;
            play(timbre.utils.mtof(m + 0));
            play(timbre.utils.mtof(m + k2));
        }
    }
});

synth.onplay = function() {
    timer.on();
};
synth.onpause = function() {
    timer.off();
};
synth.play();
        

See Also:

T("oscx") T("phasor")