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Comparison of Sound Pressure Level,


Sound Pressure, and Sound Intensity



The following two tables shows the data comparing sound pressure level, sound pressure, and sound intensity. The first table shows the data in decimal notation, while the second table shows the same data in scientific notation.

Sound Source, Distance Sound Pressure
Level (dB SPL)
Sound Pressure
(Pa)
Sound Intensity
(W/m2)
Threshold of Hearing 0 0.00002 0.000000000001
Rustling Leaves, in distance 10 0.0000632 0.00000000001
Whisper 20 0.0002 0.0000000001
Quiet Bedroom at Night 30 0.000632 0.000000001
Quiet Library 40 0.002 0.00000001
Average Home 50 0.00632 0.0000001
Normal Conversation, 1 m 60 0.02 0.000001
Curbside of Busy Street, 5 m 70 0.0632 0.00001
Vacuum Cleaner, 1 m 80 0.2 0.0001
Diesel Truck, 10 m 90 0.632 0.001
Large Orchestra, Front Row 100 2.0 0.01
Rock Concert, Front Row 110 6.32 0.1
Threshold of Discomfort 120 20 1.0
Threshold of Pain 130 63.2 10
Jet Aircraft, 50 m 140 200 100
Jet Aircraft, 30 m 150 632 1000
Perforation of Eardrum 160 2000 10000


Sound Source, Distance Sound Pressure
Level (dB SPL)
Sound Pressure
(Pa)
Sound Intensity
(W/m2)
Threshold of Hearing 0 2 x 10-5 1 x 10-12
Rustling Leaves, in distance 10 6.32 x 10-5 1 x 10-11
Whisper 20 2 x 10-4 1 x 10-10
Quiet Bedroom at Night 30 6.32 x 10-4 1 x 10-9
Quiet Library 40 2 x 10-3 1 x 10-8
Average Home 50 6.32 x 10-3 1 x 10-7
Normal Conversation, 1 m 60 2 x 10-2 1 x 10-6
Curbside of Busy Street, 5 m 70 6.32 x 10-2 1 x 10-5
Vacuum Cleaner, 1 m 80 2 x 10-1 1 x 10-4
Diesel Truck, 10 m 90 6.32 x 10-1 1 x 10-3
Large Orchestra, Front Row 100 2 x 100 1 x 10-2
Rock Concert, Front Row 110 6.32 x 100 1 x 10-1
Threshold of Discomfort 120 2 x 101 1 x 100
Threshold of Pain 130 6.32 x 101 1 x 101
Jet Aircraft, 50 m 140 2 x 102 1 x 102
Jet Aircraft, 30 m 150 6.32 x 102 1 x 103
Perforation of Eardrum 160 2 x 103 1 x 104

Sources: (1) www.sengpielaudio.com/TableOfSoundPressureLevels.htm
                (2) www.physicsclassroom.com/class/sound/Lesson-2/Intensity-and-the-Decibel-Scale.



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