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Source

Intensity (dB)

Source

Intensity (dB)

Breathing

-      10

Motorcycle

 -      105

Low volume radio

-      10

Jet fly (over 1000’)

 -      100-110

Normal conversation

-      10

Train whistle (50’)

 -      110

Office Noise

-      10

Air craft (100’)

(Prokeller driven)

 -      110-120

 

Alarm clock

-      10

Telephone

-      10

Commercial jet air craft (100’)

 -      120-140

Traffic

-      10

Jet take off

 -      120

Broadcasting studio

-      20

Space Rocket

(Launching)

 -      170-180

Soft whisper

-      20-30

Trickling clock

-      30

Trunk

 -      10

Library

-      30-35

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Source: Sharma, P.D. (1998)