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2. Understanding Decibel Levels for Hearing Health - AOL

   www.aol.com/lifestyle/understanding-decibel...

   Loud sound exposure can cause noise-induced hearing loss. In this guide, we'll give you specific examples to help you understand how loud is too loud. Understanding Decibel Levels for Hearing Health

3. Long-range acoustic device - Wikipedia

   en.wikipedia.org/wiki/Long-range_acoustic_device

   A long-range acoustic device ( LRAD ), acoustic hailing device (AHD) or sound cannon is a specialized loudspeaker that produces sound at high power for communicating at a distance. It has been used as a method of crowd control, which has caused permanent hearing damage, having an extremely high decibel capacity (up to 160 dB measured at one ...

4. Can you get a ticket for driving with really loud music ... - AOL

   www.aol.com/news/ticket-driving-really-loud...

   Sounds at 85 decibels can lead to hearing loss if you have sustained exposure to them, and sounds louder than 85 decibels can damage your hearing faster, the American Speech-Language-Hearing ...

5. Equal-loudness contour - Wikipedia

   en.wikipedia.org/wiki/Equal-loudness_contour

   Equal-loudness contour. An equal-loudness contour is a measure of sound pressure level, over the frequency spectrum, for which a listener perceives a constant loudness when presented with pure steady tones. [ 1] The unit of measurement for loudness levels is the phon and is arrived at by reference to equal-loudness contours.

6. Noise-Induced Hearing Loss: What It Is And How to Treat It - AOL

   www.aol.com/noise-induced-hearing-loss-treat...

   To keep the volume at a safe level, limit the volume to 60-70% of the maximum volume. A good rule of thumb is that you should still be able to hear a person talking at an arm’s length from you ...

7. Noise-induced hearing loss - Wikipedia

   en.wikipedia.org/wiki/Noise-induced_hearing_loss

   Otorhinolaryngology, audiology. Noise-induced hearing loss ( NIHL) is a hearing impairment resulting from exposure to loud sound. People may have a loss of perception of a narrow range of frequencies or impaired perception of sound including sensitivity to sound or ringing in the ears. [ 1] When exposure to hazards such as noise occur at work ...