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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

The Decibel Scale
Gives an approx of human perception of loudness. This is because the human ear has a logarithmic response to changes in sound level...more
Manchester - Part G - 0161 403 0129
The counties covered by this office are:
Isle of Man, Lancashire, Cheshire, Greater Manchester, Merseyside,
Phone Number: 0161 403 0129 Email: manchester@e2consultants.co.uk
Our other services include:
Part G can also be known as:
Water Calculations, Part G Water Calculation, Part G Water Calc, Water Usage Calculation,


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Company No. 06728970