Sound Thinking

Level, dBA | |
Military Jet at 100ft | 140 |
Artillery Fire at 10 ft | 130 |
Passengers Ramp at Jet Airliner | 120 |
Discotheque | 110 |
Textile Mill | 105 |
Printing Plant | 100 |
Platform of Subway Station | 100 |
Jackhammer, 15 meter | 97 |
Generator Room | 90 |
Unmuffled Diesel Engine at 130 ft | 90 |
Heavy Truck, 15 meter | 85 |
Concrete Mixer, 15 meter | 80 |
Computer Printout Room | 80 |
Inside Auto, 64km/hr | 76 |
Vacuum Cleaner, 3 meter | 70 |
Freight Train at 100 ft | 70 |
Auto, Pass by, 30 meter | 65 |
Conversational Speech at 3 ft | 60 |
Large Transformer, 15 meter | 58 |
Urban Area | 55 |
Window Air Conditioner | 50 |
Suburban Area | 45 |
Quiet Country Setting | 35 |
Soft Whisper, 2 meter | 35 |
Empty Broadcast Studio | 28 |
North Rim, Grand Canyon | 25 |
Threshold of Good Hearing | 10 |
Threshold of Excellent Hearing – Youth | 0 |