How is 85 decibels measured?

Jun 25, 2022 ... What number of decibels do you listen at? I thought that I probably listen at 85db, until I measured using a smart phone app. 85 Decibels/dB is a teen rock and roll band from Honolulu made up of four good friends and classmates. Kalliyan, Daniel, Jake, and Tevita are passionate ... is exposed to noise 85 decibels or greater. 5.1.4. All locations and equipment that exceed the 85-decibel limit shall be marked to notify employees of the ... Idling diesel trucks emit noise at 85 dBA (decibels) measured at a distance of 50 feet. In general, noise decreases 6 decibels for every doubling of distance ... No person shall operate any motor vehicle with a gross weight of 6,500 pounds or less with an exhaust system that emits noise in excess of 85 decibels. Such ... Jun 28, 2018 ... Noise around 85 decibels (dBA) – which is loud enough that you must raise your voice to be heard by someone three feet away (arm's length) ... Jul 30, 2024 ... Researchers have discovered that extended or repeated noise exposure to levels of 85 decibels or above can cause permanent hearing loss. May 28, 2019 ... ... dBA. For reference, 110 dBA is more than 100 times as intense as 85 decibels! Manufacturers are not required to limit the maximum sound ... 85 decibels is a high noise level on the decibel scale. It is 15 times more intense than the 70-decibel level considered by the World Health Organization (WHO) ... Apr 16, 2025 ... Sound is measured in units called decibels. ... However, long or repeated exposure to sounds at or above 85 dBA can cause hearing loss.