![]() When comparing sound levels of different noises and their potential for causing hearing damage, A-weighted decibels (dBA) are often used instead of dB. Some symptoms of NIHL include difficulty understanding speech and needing to turn the volume up on the television. Since noise-induced hearing loss often occurs gradually, those affected may not realize until the damage is already done. More often though, hearing loss develops over time from repeated exposure to loud noise. A one-time exposure to very loud noise, such as a firework blast close to your ear, can cause NIHL. High noise exposure can damage the delicate hearing hair cells in the ear, causing noise-induced hearing loss (NIHL). 120 dB - Thunder, concerts, a jet plane taking off.90 dB - Hairdryers, blenders, power tools. ![]()
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