This seems so counter intuitive to me. Isn't white noise associated with blending into the background? Something that your brain gets used to and filters out while you're studying, or trying to sleep?<br>Obviously smarter people than me have come up with this, I just can't wrap my head around being more accutely aware of a pwshh sound instead of a beep,(reply>), It's directional versus unidirectional. But I do wonder why businesses put white noise machines in. Of course I just about went crazy because of an air conditioning unit in office for an hour. So I think putting artificial noises in space might be something we should avoid.