White noise refers to a noise that contains all frequencies across the spectrum of audible sound in equal measure. Because white noise spans multiple bands of sound, it is sometimes referred to as broadband noise.
White noise is us hearing all frequencies at the same time. And the same goes for pink noise, brown noise, and all other colored noises too. It also applies to sound masking, a specially engineered noise used to even out the soundscape of uncomfortably quiet offices and improve the acoustic privacy of employees.
Dangers of White Noise. The long-term safety of white noise is subject to debate. The American Tinnitus Association, for instance, states that noise exposure below 80 to 85 decibels is likely safe. Other experts say that white noise may harm the brain and central auditory system over time.
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