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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
Part L2A
Conservation of fuel and power in new builds other than dwellings

Peterborough - Display Energy Certificates - 01733 600 149
The counties covered by this office are:
Suffolk, Norfolk, Cambridgeshire,
Phone Number: 01733 600 149 Email: peterborough@e2consultants.co.uk
Our other services include:
Display Energy Certificates can also be known as:
Display Energy Certificate, DEC,


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