Fielder [11] has shown that white noise at 4dB SPL is just audible for people in either a home listening or professional monitoring environment, even with environmental noise levels of 50dB SPL. This compares with maximum sound levels between 105dB and 112dB SPL (corresponding to digital full scale) for listening levels in domestic or review
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.
Different organizations suggest different volume levels for white noise depending on usage context. For example, the American Academy of Pediatrics (AAP) recommends a general maximum white noise volume of 50 A-weighted decibels (dBA), while the World Health Organization (WHO) suggests an even lower limit of 30 dBA for hospital nurseries.
Pros. The pros of using white noise for babies is that it soothes them and can help them get the sleep they need. One study of newborns found that 80 percent exposed to white noise dozed off within five minutes, while only 25 percent of those without the background noise fell asleep as quickly. [2]
Pink noise: Pink noise is white noise that's been filtered to have less energy in the higher frequencies—3 dB (decibels) per octave. It has less of a hiss than white noise, but isn't as toned down as brown noise.
With the development of urbanization, road traffic noise has become the main source of urban noise pollution, accounting for 60-80% [].Noise exceeding 50 dB affects sleep and rest, noise exceeding 70 dB triggers psychological stress and distraction, and living for a long time in a noise environment of more than 90 dB can seriously damage hearing and induce other health problems [].
So the recommended maximum sound level for white noise is 48 dB for me. At 50 dB, things start to get annoying. 55 dB are clearly too loud for me. In a 2017 study, white noise played at 46 decibels reduced time to fall asleep by 38 percent
Just for your information, noise at 70 dB level is similar to the sound of a moving car 10 meters away. Noise at this level was reported to be just soothing enough to calm our minds and keep ambient sounds away, with itself not being too overwhelming to distract us from our tasks .
Professionally the answer is that the acceptable level of noise is none that is audible. You should be able to raise the listening level 6 dB above what is comfortable and hear hardly any noise at all. This is the standard that would be required, for example, for an audio book.
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what db should white noise be
