old-new-timbre.js

////////////////////////////////////////////////////////////////////////////////
/* old
 * T("sin", {freq:880, mul:0.5}).play();
 */
let sin = timbre((T) => {
  return T("SinOsc.ar", { frequency: 880, mul: 0.5 });
}).start();

////////////////////////////////////////////////////////////////////////////////
/* old
 * var sin = T("sin").play();
 *
 * sin.set({freq:880});
 */
let sin = timbre((T) => {
  return T("SinOsc.ar", { frequency: T("param", { name: "freq", value: 440 }), mul: 0.5 });
}).start();

sin.set("param", 880);

////////////////////////////////////////////////////////////////////////////////
/* old
 * var sine1 = T("sin", {freq:440, mul:0.5});
 * var sine2 = T("sin", {freq:660, mul:0.5});
 *
 * T("perc", {r:500}, sine1, sine2).on("ended", function() {
 *   this.pause();
 * }).bang().play();
 */
let chord = timbre((T) => {
  return T([
    T("SinOsc.ar", { frequency: 440 }),
    T("SinOsc.ar", { frequency: 660 }),
  ]).T("Line.ar", { startValue: 0.5, duration: 0.5, doneAction: 2 })
}).start();

////////////////////////////////////////////////////////////////////////////////
/* var synth = T("OscGen", {wave:"saw", mul:0.25}).play();
 * 
 * var keydict = T("ndict.key");
 * var midicps = T("midicps");
 * T("keyboard").on("keydown", function(e) {
 *   var midi = keydict.at(e.keyCode);
 *   if (midi) {
 *     var freq = midicps.at(midi);
 *     synth.noteOnWithFreq(freq, 100);
 *   }
 * }).on("keyup", function(e) {
 *   var midi = keydict.at(e.keyCode);
 *   if (midi) {
 *     synth.noteOff(midi, 100);
 *   }
 * }).start();
 */
const keyCodeToNoteNumber = require("keyCodeToNoteNumber");
const midicps = require("midicps");

const Saw = timbre((T, frequency) => {
  return T("Saw", { frequency: frequency, mul: 0.25 });
});


window.addEventListener("keydown", (e) => {
  let noteNumber = keyCodeToNoteNumber(e.keyCode);
  
  Saw.noteOn(noteNumber, timbre.currentTime, midicps(noteNumber));
});
window.addEventListener("keyup", (e) => {
  Saw.noteOff(noteNumber, timbre.currentTime);
});