Labels:book | bookcase | bulletin board | crt screen | dialog box | earth | monitor | plant | poster | rock | sky | trade name | window | windowpane OCR: Arial 10 pt *: f{x} Volume Le VOLUME LEVELS (Decibels) VOLUME LEVELS (Decibels) Decibels are on logarithmic scale 3dB increase Double Intensity 3dB decrease Halve Intensity 10dB increase 10X Intensity 10dB clecrease 1/10 Intensity Example of f noise source Decibels Intensity Quietest sound which can be heard Quiet whisper 20 100 Birdsong 35 3162 After 11pm 100 fine for exceding noise leaking to neighbou 35 3162 Watching TV in a room Ifev metres from TV 50 100000 Normal conversation 50 100000 C ar conversation 60 1000000 RsnY office 60 1000000 Crowded pub 7F -100 316227 Background road noise Heayy traffic 80 100000000 Heatth S afety, a clear must be given in workplace 85 316227 766 Lawn Mower 85 316227 766 Sound levels in Uno, Kenwood Stereo 12db 85 316227 766 Sound levels in my room with a ...
