It actually increases sensitivity to noise, when i turn it off. The brain likely adapts to constant noise by boosting the signal and when the noise is gone you

It actually increases sensitivity to noise, when i turn it off. The brain likely adapts to constant noise by boosting the signal and when the noise is gone you will hear everything much louder/sharper. A much better alternative is waterfall/nature sounds on youtube, which don't rape your ears with hi-frequency near-ultrasound(white noise power at higher freqs is huge, and is likely to cause physical damage with long-term listening)