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Good Hearing?
A typical person with good hearing can hear from about 20Hz to 20kHz (the audio bandwidth). A person's voice will usually range from 500Hz to 2kHz...more

Environmental Noise Levels
The max exposure time at 85 dBA is 8 hours, at 110 dBA it's just 1 min 29 seconds. If exposed, limit the time and wear hearing protection...more
Part E
Resistance of the Passage of Sound

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For further Commercial_BS4142 information for your area, be sure to check out Sound-Testing-.co.uk.
Our other services include:
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Commercial BS4142 can also be known as:
Commercial PPG24, Environmental Noise Assessment, Noise Survey For Residential Development, Commercial Building and Room Acoustics, Commercial Sound Testing Environmental Noise, Noise Impact Assessment, Commercial Noise Survey For Residential Development, Industrial Noise Survey, Commercial BS8233 Noise Assessment and Noise Survey, Sound Testing Environmental Noise, PPG24, Building and Room Acoustics, Commercial Noise Impact Assessment, BS8233 Noise Assessment and Noise Survey, Commercial Environmental Noise Assessment, BS4142, Commercial Industrial Noise Survey,
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