Sound Intensity
Sound Source             Intensity (W/m2)
Saturn rocket at 50 m                                     108
Jet engine at 10 m                                            103
Jet engine at 50 m                                            10
SST takeoff at 500 m; Pneumatic drill          100 = 1
Amplified Rock Music                                   10-1
Machine shop                                                  10-2
Jackhammer at 1 m; Subway train                  10-3
Factory                                                              10-4