text: load('audio-harness.js');
  load('dsp.js');
  
  var iterations = 1000;
  
  var sampleRate = 44100;
  var lp12 = new IIRFilter(DSP.LOWPASS, 22050, 0, sampleRate);
  lp12.set(2500, 0.3);
  
  //var frameSize = 2048;
  
  var calcFilter = function() {
    var fb = getFramebuffer();
    var signal = DSP.getChannel(DSP.MIX, fb);
    lp12.process(signal);
  };
  
  runTest(calcFilter, iterations);
  