![]() ![]() Here is a table showing harmful decibel levels and the related maximum exposure time:ĭistance also plays an important role. However, it all depends on how long you are exposed to the said dangerous decibel levels. ![]() The general rule is that sounds above 85 dB can cause permanent hearing damage or noise-induced hearing loss. ![]() Low frequencies (under 20 Hz) and high frequencies (above 20,000 Hz) that humans cannot perceive can also affect the ear and have adverse effects on our health. In addition to decibel levels, harmful sound frequencies can also be damaging to human hearing. Consequently, you should avoid extended exposure to decibel levels above 85 dB. Impulse noise with high decibel levels such as firecrackers or gun blast are also very dangerous. On the other hand, a loud rock concert or a jackhammer both exceed the recommended limit of 85 dB. These values are under the recommended limit of 85 dB, so they are considered safe to human hearing. To answer the question of what decibel is dangerous and requires hearing protection, let’s look at the decibel levels of common sounds:Īs indicated in the table above, a quiet room has an average dB level of 40, while a vacuum cleaner is above 70 dB. It goes below zero, but 0 dB is considered to be the threshold of human hearing. The decibel scale is used to measure sound pressure caused by sound waves. Plus, how to protect yourself against hearing damage and hearing loss. Read on to find out about harmful sound frequencies and dangerous decibel levels. In general, sounds above 85 dB are considered harmful to human hearing and we should avoid prolonged exposure to them.Ī lesser-known fact is that certain frequencies that we cannot even perceive can also harm our hearing. We all know that loud noises can cause a wide range of negative effects.
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