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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

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
Portsmouth - C4SH - 0239 366 0106
The counties covered by this office are:
Hampshire, West Sussex, Isle of Wight, Channel Islands, Wiltshire, Dorset,
Phone Number: 0239 366 0106 Email: portsmouth@e2consultants.co.uk
Our other services include:
C4SH can also be known as:
Code for Sustainable Homes Daylight Calculation, CSH, Code for Sustainable Homes, Sustainable Homes, Code Assessment,


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Company No. 06728970