FREE Download - Pulsar Instruments' Decibel Level Chart The chart gives examples of how loud some of the common tools and objects we may see (and hear!) 2-4.1 DECIBEL (dB) The Decibel is a subunit of a larger unit call ed the bel. in our life are. Note: dBA = Decibels, A weighted Decibel Level Comparison Chart Environmental Noise dBA Jet engine at 100’ 140 Pain Begins 125 Pneumatic chipper at ear 120 Chain saw at 3’ 110 Power mower 107 Subway train at 200’ 95 Walkman on 5/10 94 Level at which sustained … Decibel chart of common sounds Find out decibel levels of common noises like power tools, objects and places with our decibel chart. A noise level chart showing examples of sounds with dB levels ranging from 0 to 180 … As originally used, the bel represented the power ratio of 10 to 1 betwe en the strength or intensity i.e., power, of two sounds, and was named after Alexander Graham Bell.