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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

Point of Reference
10 dBA is the sound level of normal human breathing. To put it into perspective, thunder is a whopping 120 dBA...more
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For further Air_Integrity_Testing information for your area, be sure to check out Air-Testing-.co.uk.
Our other services include:
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Air Integrity Testing can also be known as:
Commercial Air Integrity Testing, Air Pressure Testing, House Leakage Testing, Commercial Air Testing, Commercial Air Pressure Testing, Fan Pressure Testing, Commercial Fan Pressure Testing, Commercial Air Leakage Testing, Commercial Air Tightness Testing, Commercial House Leakage Testing, Air Testing, Air Leakage Testing, Air Tightness Testing,
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