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Sleep and Work Soundly and Quietly With These Noise Cancelling Sounds. It works best with headphones. Sound Masking is a new innovation in noise cancellation white noise technology. Sound Masking matches the frequency of human speech and other common distractions to better cover these noises. Take advantage of Sound Masking to improve your quality of living in a loud living or work situation! Sound Masking can be used to: improve concentration by eliminating distracting noises, improve conversation privacy in a workplace or shared living space, provide a space that is perfectly sound balanced (not too loud, not too quiet).
Noise Cancelling Sound Masking - HITOSHIZUKU -