@Override
protected void onResume() {
super.onResume();
pitchPoster = new MicrophonePitchSource();
pitchPoster.setHandler(new UIUpdateHandler());
pitchPoster.startSampling();
}
@Override
protected void onPause() {
super.onPause();
pitchPoster.stopSampling();
pitchPoster = null;
}