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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
Pentre - Commercial Energy Audit - 029 2193 0147
The office that covers this area is: Cardiff
Phone Number: 029 2193 0147 Email: pentre@e2consultants.co.uk
Our other services include:
Commercial Energy Audit can also be known as:
Energy Audit, Thermal Imaging Survey, Thermography, Commercial Thermography Survey, Thermal, Building Thermal Imaging Survey, Commercial Thermal Imaging Inspection, Code Air Infiltration Survey, Commercial Thermal, Commercial Building Thermal Imaging Survey, Commercial Heat Loss Survey, Thermal Imaging, Heat Loss Survey, Commercial Thermal Imaging Survey, Commercial Thermography, Commercial Thermal Imaging, Thermography Survey, Commercial Code Air Infiltration Survey,


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Company No. 06728970