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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
Chiseldon - Part F Ventilation Certificate - 0239 366 0106
The office that covers this area is: Portsmouth
Phone Number: 0239 366 0106 Email: chiseldon@e2consultants.co.uk
Our other services include:
Part F Ventilation Certificate can also be known as:
Duct Testing, Part F Testing, Ventilation Testing Equipment, Air Flow Rate Testing, Part F Ventilation Testing, Part F Fan Testing, Ventilation Commissioning Certificate,


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Company No. 06728970