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MEMTECH ACOUSTICAL NOISE CONTROL
Industrial Noise Control,
Noise Reduction Solutions,
Noise Containment, Noise Dampening,
Classroom Acoustics, Industrial Hygiene Services,
Rapid Roll Doors, Pipe Insulation, Noisekiller |
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Memtech, Inc.
9033 General Drive
Plymouth, MI 48170
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Phone: |
800-634-4471 |
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734-455-8550 |
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Fax: |
800-634-4472 |
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734-455-8552 |
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NOISE FACTS AND
GLOSSARY OF NOISE TERMS
What's a dB?
Sound intensity is measured in decibels
(dB). Our range of hearing starts at 0 dB and is considered safe up to 70 dB.
Over and above that level it is hazardous and can result in permanent hearing damage.
Why
do we need Noise Control?
Some typical noises rated in decibels (dB)
Some facts about dB's
Glossary of Terms
Noise
Control - why do we need it?
- Government Regulations enforced by OSHA,
State and Local laws
- Insurance carriers are applying pressure to
companies due to hearing loss claims filed under workman's compensation laws.
- Productivity of employee. Prolonged exposure
to loud environment cuts down productivity, creates stress and can lead to accidents.
- A 5-decibel reduction can cut the risk of
hearing loss in half.
- The most common problem in a room is too much
echo or reverberation. Too much echo can garble speech intelligibility and make music
sound dreadful.
- In recording studios and broadcast facilities
and echo free environment's required to guarantee speech clarity.
Some typical noises rated in
decibels (dB)
155 dB
- A .30 Caliber Rifle
Extreme Danger! |
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140
dB - A Shotgun Blast/Jet Engine (at 30 m) Extreme Danger! |
| 110
dB - Rock Drill/Amplified Music |
120
dB - Propellor Aircraft
Threshold of Pain |
| 90
dB - Lawn Mower/Heavy vehicle. Limit of exposure for 8 hrs |
130
dB - Riveting Hammer
Threshold of Feeling |
| 80
dB - Computer Print Room |
100
dB - Chain Saw/Subway Station |
| 60
dB - Conversation - moderate |
70
dB - Noisy Restaurant or Heavy Traffic |
| 40
dB - Quiet Office |
20
dB - Buzzing Insect |
| 30
dB - Quiet Whisper |
10
dB - Rustle of a Leaf |
0
dB - No sound
Threshold of Hearing |
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Some facts about dB's
- Auditory nerves can be
permanently damaged from prolonged exposure at 90 dB
- 120 dB can cause pain and
ringing in the ear
- Sharp pain and extensive
destruction of the auditory nerves occurs at 140 dB
- At 150 - 160 dB massive
destruction of the auditory nerves and persistent ringing in the ears will occur
immediately
For immediate service email:
salesinfo@memtechacoustical.com
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