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M o d e l   N o . P S - 2 1 0 9

 T e c h n i c a l  S u p p o r t

3

Sound Intensity (

W/m

2

)

: The sound intensity measure-

ment is calculated from the dBC measurement of sound 

level.

Common Sound Levels and Sound Intensities

Suggested Activity

Use the Sound Level Sensor, a speaker, and a function gener-

ator to record sound level and sound intensity from the 

speaker. 

Connect the speaker to the function generator and set the 

speaker to a relatively low volume sine wave at 440 Hz. 

Place the sensor about 0.2 m from the speaker and start 

recording data. After a few moments, stop recording 

data. 

Increase the volume and repeat the process. Make mea-

surements for five different volumes.

Plot sound level versus sound intensity. 

What relationship is there between sound level and sound 

intensity?

More Information

For the latest information about the Sound Level Sensor, 

visit the PASCO web site at www.pasco.com and enter 

“PS-2109” in the Search window.

Technical Support

For assistance with any PASCO product, contact PASCO at:

Limited Warranty 

For a description of the product warranty, see the 

PASCO catalog. 

Copyright 

The PASCO scientific 

Instruction Sheet

 

is copyrighted with all rights reserved. Permission is granted to 
non-profit educational institutions for reproduction of any part of this 
manual, providing the reproductions are used only in their laborato-
ries and classrooms, and are not sold for profit. Reproduction under 
any other circumstances, without the written consent of PASCO sci-
entific, is prohibited. 

Trademarks 

PASCO, PASCO Capstone, 

PASPORT, SPARK Science Learning System, SPARK SLS, and 
SPARKvue are trademarks or registered trademarks of PASCO sci-
entific, in the United States and/or in other countries. For more infor-
mation visit www.pasco.com/legal. 

Product End of Life Disposal Instructions:

This electronic product is subject to disposal and recycling 

regulations that vary by country and region. It is your 

responsibility to recycle your electronic equipment per your 

local environmental laws and regulations to ensure that it 

will be recycled in a manner that protects human health and 

the environment. To find out where you can drop off your 

waste equipment for recycling, please contact your local 

waste recycle/disposal service, or the place where you pur-

chased the product.
The European Union WEEE (Waste Elec-

tronic and Electrical Equipment) symbol 

(to the right) and on the product or its 

packaging indicates that this product must 

not be disposed of in a standard waste con-

tainer.

Sound 
Source

Sound Level 
(dB)

Sound Intensity 
(

W/m

2

)

Rustling leaves

20

10

-4

Library

40

10

-2

Conversation

60

1

Noisy office

80

10

2

Subway train

100

10

4

Rock concert

120

10

6

Address: PASCO scientific

10101 Foothills Blvd.

Roseville, CA 95747-7100

Phone:

+1 916-786-3800 (worldwide)

800-772-8700 (U.S.)

E-mail: [email protected]
Web

www.pasco.com

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