Sound level decibel loudness comparison chart
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Sound Level Decibel Loudness Comparison Chart
www.reliabilitydirectstore.comSound Level Decibel Loudness Comparison Chart Environmental Noise Weakest sound heard 0dB Whisper Quiet Library 30dB Normal conversation (3-5') 60-70dB Telephone dial tone 80dB City Traffic (inside car) 85dB Train whistle at 500', Truck Traffic 90dB Subway train at 200' 95dB Level at which sustained exposure may result in hearing loss
Decibel (Loudness) Comparison Chart
music.eku.eduDecibel (Loudness) Comparison Chart Here are some interesting numbers, collected from a variety of sources that help one to understand the volume levels of various sources and how they can affect our hearing. Environmental Noise Weakest sound heard 0dB Whisper Quiet Library at 6' 30dB Normal conversation at 3' 60-65dB Telephone dial tone 80dB
Ventilation Fundamentals - Solutions for Air
www.solutionsforair.comHowever, the sound generated by the fan may have to be considered. Compare the sone values: 17.4 sones for the 7A557 and 11.5 sones for the 7A559. The 7A559 is about 34% quieter. Where a low sound fan is required, the 7A559 would be a better selection. If loudness is not a factor, the 7A559 would be a better selection because it is less expensive.