Line & xLine Envelope

Note: we need to include maxiExtras.js for this envelope to work.

This example will work with an oscillator or a sample. I am using an oscillator here, but the steps are exactly the same regardless.

Step 0 - Set up our basic oscillator

var audio = new maximJs.maxiAudio();
var osc = new maximJs.maxiOsc();

function setup() {
  audio.play = playLoop;
  audio.init();
}

function playLoop() {
  this.output = osc.sinewave(440);
}

Step 1 - Set up our envelope object

var audio = new maximJs.maxiAudio();
var osc = new maximJs.maxiOsc();
var env = new maximEx.env();

Step 2 - Set up our envelope's settings

For a line envelope

function playLoop() {
  this.output = osc.sinewave(440) * env.line(0, 1, 3);
}

For a xLine envelope

function playLoop() {
  this.output = osc.sinewave(440) * env.xLine(0, 1, 3);
}

The first argument is the initial amplitude, and the second argument is the final amplitude, and the third argument is the time in which the transition between the two times will take place.

Step 3 - Trigger the envelope

function mousePressed() {
  env.trigger();
}