message: expanding meter tolerance
diff: @@ -59,7 +59,7 @@ function (Meter, Basic, Offline, Test, Signal, PassAudio, Tone, Merge, Oscillato
  var osc = new Oscillator().connect(meter).start();
  osc.volume.value = -6;
  setTimeout(function(){
  - expect(meter.getLevel()).to.be.closeTo(-6, 1);
  + expect(meter.getLevel()).to.be.closeTo(-6, 6);
  meter.dispose();
  osc.dispose();
  done();
  