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Noise Level Data
The following table presents noise data at octave-band center frequencied for familiar residential, outdoor transportation and building activity noise sources.
Sound Pressure Level | |||||||||
---|---|---|---|---|---|---|---|---|---|
Example Source | |||||||||
Home | 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz | 8000 Hz | dBA |
Alarm Clock at 4-9 ft – Ringing | — | 46 | 48 | 55 | 62 | 62 | 70 | 80 | 80 |
Electric Shaver at 1.5 ft | 59 | 58 | 49 | 62 | 60 | 64 | 60 | 59 | 68 |
Vacuum Cleaner at 3 ft | 48 | 66 | 69 | 73 | 79 | 73 | 73 | 72 | 81 |
Garbage Disposal at 2 ft | 64 | 83 | 69 | 56 | 55 | 50 | 50 | 49 | 69 |
Clothes Washer at 2-3 ft – Wash Cycle | 59 | 65 | 59 | 59 | 58 | 54 | 50 | 46 | 62 |
Toilet – Refilling Tank | 50 | 55 | 53 | 54 | 57 | 56 | 57 | 52 | 63 |
Whirlpool, Six Nozzles – Filling Tub | 68 | 65 | 68 | 69 | 71 | 71 | 68 | 65 | 74 |
Window Air-Conditioning Unit | 64 | 64 | 65 | 56 | 53 | 48 | 44 | 37 | 59 |
Telephone at 4-13 ft – Ringing | — | 41 | 44 | 56 | 68 | 73 | 69 | 83 | 83 |
TV at 10 ft | 49 | 62 | 64 | 67 | 70 | 68 | 63 | 39 | 74 |
Stereo – Teenager Listening Level | 60 | 72 | 83 | 82 | 82 | 80 | 75 | 60 | 86 |
Stereo – Adult Listening Level | 56 | 66 | 75 | 72 | 70 | 66 | 64 | 48 | 75 |
Violin at 55 ft – Fortissimo | — | — | 91 | 91 | 87 | 83 | 79 | 66 | 92 |
Normal Conversational Speech at 3 ft | — | 57 | 62 | 63 | 57 | 48 | 40 | — | 63 |
Outdoors | 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz | 8000 Hz | dBA |
Birds at 10 ft | — | — | — | — | — | 50 | 52 | 54 | 57 |
Cicadas | — | — | — | — | 35 | 51 | 54 | 48 | 57 |
Large Dog at 50 ft – Barking | — | 50 | 58 | 68 | 70 | 64 | 52 | 48 | 72 |
Lawn Mower at 5 ft | 85 | 87 | 86 | 84 | 81 | 74 | 70 | 72 | 86 |
Pistol Shot at 250 ft – Peak Impulse Levels | — | — | — | 83 | 91 | 99 | 102 | 106 | 106 |
Surf at 10-15 ft – Moderate Seas | 71 | 72 | 70 | 71 | 67 | 64 | 58 | 54 | 78 |
Wind in Trees – 10 mph | — | — | — | 33 | 35 | 37 | 37 | 35 | 43 |
Transportation | 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz | 8000 Hz | dBA |
Large Trucks at 50 ft – 55 mph | 83 | 85 | 83 | 85 | 81 | 76 | 72 | 65 | 86 |
Passenger Cars at 50 ft – 55 mph | 72 | 70 | 67 | 66 | 67 | 66 | 59 | 54 | 71 |
Motorcycle at 50 ft – Full Throttle, Without Baffle | 95 | 95 | 91 | 91 | 91 | 87 | 87 | 85 | 95 |
Snowmobile at 50 ft | 65 | 82 | 84 | 75 | 78 | 77 | 79 | 69 | 85 |
Train at 100 ft – Pulling Hard | 95 | 102 | 94 | 90 | 86 | 87 | 83 | 79 | 94 |
Train Siren at 50 ft | 88 | 90 | 110 | 110 | 107 | 100 | 91 | 78 | 109 |
Car Horn at 15 ft | — | — | — | 92 | 95 | 90 | 80 | 60 | 97 |
Commercial Turbofan Airplane at 1 mile – From Takeoff Flight Path | 77 | 82 | 82 | 78 | 70 | 56 | — | — | 79 |
Military Helicopter at 500 ft – Single Engine, Medium Size | 92 | 89 | 83 | 81 | 76 | 72 | 62 | 51 | 80 |
Interiors | 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz | 8000 Hz | dBA |
Amplified Rock Music Performance – Large Arena | 116 | 117 | 119 | 116 | 118 | 115 | 109 | 102 | 121 |
Audiovisual Room | 85 | 89 | 92 | 90 | 89 | 87 | 85 | 80 | 94 |
Auditorium – Applause | 60 | 68 | 75 | 79 | 85 | 84 | 75 | 65 | 88 |
Classroom | 60 | 66 | 72 | 77 | 74 | 68 | 60 | 50 | 78 |
Computer Equipment Room | 78 | 75 | 73 | 78 | 80 | 78 | 74 | 70 | 84 |
Dog Kennel | — | — | 90 | 104 | 106 | 101 | 89 | 79 | 108 |
Gymnasium | 72 | 78 | 84 | 89 | 86 | 80 | 72 | 64 | 90 |
Kitchen | 86 | 85 | 79 | 78 | 77 | 72 | 65 | 57 | 81 |
Laboratory | 65 | 70 | 73 | 75 | 72 | 69 | 65 | 61 | 77 |
Library | 60 | 63 | 66 | 67 | 64 | 58 | 50 | 40 | 68 |
Mechanical Equipment Room | 87 | 86 | 85 | 84 | 83 | 82 | 80 | 78 | 88 |
Music Practice Room | 90 | 94 | 96 | 96 | 96 | 91 | 91 | 90 | 100 |
Racquetball Court | 82 | 85 | 80 | 85 | 83 | 75 | 68 | 62 | 86 |
Reception and Lobby Area | 60 | 66 | 72 | 77 | 74 | 68 | 60 | 50 | 78 |
Teleconference | 65 | 74 | 78 | 80 | 79 | 75 | 68 | 60 | 83 |