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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
Part E
Resistance of the Passage of Sound
Wrexham County - DEC - 01978 633 079
The office that covers this area is: Wrexham
The towns & cities that are covered within this county are:
Chirk, Llay, Wrexham,
Phone Number: 01978 633 079 Email: wrexham-county@e2consultants.co.uk
Our other services include:
DEC can also be known as:
Display Energy Certificate,
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Company No. 06728970
