Offices Nationwide
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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

Sound Intensity
Sound intensity's measured in Decibels (dB). An logarithmic scale where an increase of 10 dB gives an apparent doubling of loudness...more
Our other services include:
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C4SH can also be known as:
CSH, Code for Sustainable Homes Daylight Calculation, Code for Sustainable Homes, Sustainable Homes, Code Assessment,
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Company No. 06728970