White noise. Free generators available in the form of software, or just a .wav that you can loop. Works well in noisy environments, and the white noise blankets

White noise. Free generators available in the form of software, or just a .wav that you can loop. Works well in noisy environments, and the white noise blankets all noise so that you get used to it and it eventually fades out - for SOME people. For others, it's just annoying.