A scale developed originally by K.D. Kryter in 1959 to attempt to measure the perceived noisiness of jet aircraft by observers on the ground. The scale has been adopted by the International Standards ...

An instrument for measuring the level of sound pressure in DECIBELs. Such measurements are called sound level readings. See: SOUND LEVEL. Sound level meters usually ...

A PC emitting only 20dB of noise would be considered a relatively quiet system, while a typical office environment is around 40-50dB, and comfortable hearing levels are said to be below 60dB.

Australians have for years complained about the noise level from Alphabet-owned ... according to the decibel level comparison chart from Yale Environmental Health and Safety.