Common Noise Levels and Reactions

Activities

Noise Level, dB(A)

Apparent Loudness

Typical Reaction



Military Jet, Air Raid Siren

130

64 times as loud

Limited Amplified Speech

Amplified Rock Music

110

16 times as loud

Maximum Vocal Effort

Jet Takeoff @ 500m, Train Horn @ 30m

100

8 times as loud

-

Freight Train @ 15m

95

-

-

Heavy Truck @ 15m, Busy City Street, Loud Shout

90

4 times as loud

Very Annoying, Hearing Damage (8 hours)

Busy Traffic Intersection, Highway Construction Site

80

2 times as loud

Annoying

Highway Traffic @ 15m, Roadside Traffic, Train Horn @ 500 m, Noisy Restaurant

70

Base Reference

Telephone Use Difficult

Predominantly Industrial Area, Light Car Traffic, @ 15m, City or Commercial Areas, Outdoor Recreation, Residential Areas Close to Industry, Noisy Office

60

1/2 as loud

Intrusive

Quiet Office

50

1/4 as loud

Speech Interference

Suburban Area w/ medium transportation density, Kitchen/Bathroom

40

1/8 as loud

Quiet

Public Library, Living, Dining, Bedroom

30

1/16 as loud

Very Quiet

Soft Whisper @ 5m

10

1/64 as loud

Just Audible

Threshold of Hearing

0

N/A

Not Audible