Oscillators that blend without phase shifting. Not huge difference but noticeable.

osc.js

var mi = Math.PI/2;
var pi = Math.PI;
var tau = Math.PI*2;

function arp(ts, x, y, z) {
  return Math.sin(x * Math.exp(-ts * y)) * Math.exp(-ts * z);
}

var sin = Math.sin;

function tri(x) {
  return Math.abs(1 - ((x-mi) % tau) / pi) * 2.0 - 1.0;
}

function saw(x) {
  return 1 - ((x-mi) % tau) / pi;
}

function sqr(x) {
  return sin(x) > 0 ? 1 : -1;
}

function dsp(t) {
  var ts = t % 0.5;
  var a = 301.467 * t * tau;
  var b = sin(t*tau/2)*0.5 + 0.5;
  return 0.1 * (sin(a)*b + saw(a)*(1-b));
  return 0.5 * arp(ts, saw(a) + sqr(a), tau, 0);
}