Example Sound Levels
Source
Sound Pressure Level (dBA)
Large rocket (nearby)
180 to 194
Jet aircraft
150
Shotgun blast
145
Propeller aircraft
140
Pneumatic riveter, threshold of pain
130
Rock concert, thunder
120
Construction noise
110
Subway train
100
Heavy truck
90
Noisy restaurant
80
Busy traffic, normal radio
70
Normal conversation, dishwasher
60
Quiet office
50
Library
40
Soft whisper
30
Rustling leaves
20
Normal breathing
10
Threshold of hearing
0
5
Standard Octave Band Frequencies Ranges with Corresponding A and C
Weighting Values
Center Frequency
(Hz)
Effective Band
(Hz)
A Weighting
(dB)
C Weighting
(dB)
31.5
22.1–44.2
–39.4
–3.0
63
44.2–88.4
–26.2
–0.8
125
88.4–177
–16.1
–0.2
250
177–354
–8.6
0
500
354–707
–3.2
0
1000
707–1,414
0
0
2000
1,414–2,828
1.2
–0.2
4000
2,828–5,657
1.0
–0.8
8000
5,657–11,314
–1.1
–3.0
Additional Experiments
For more information about experiments related to this product, see
www.vernier.com/slm-bta
Troubleshooting
If your Sound Level Meter is not operating correctly, first check that the batteries
are charged and that the Meter turns on. Use the cable to connect the Meter to a
Vernier interface and verify that the Sound Level Meter is identified by the
data-collection software. For more troubleshooting tips, see
www.vernier.com/til/1386
Repair Information
If you have followed the troubleshooting steps and are still having trouble with
your Sound Level Meter, contact Vernier Technical Support at
[email protected] or call 888-837-6437. Support specialists will work with you
to determine if the unit needs to be sent in for repair. At that time, a Return
Merchandise Authorization (RMA) number will be issued and instructions will be
communicated on how to return the unit for repair.
Accessories/Replacements
Item
Order Code
Cable for Sound Level Meter
CB-SLM
6
