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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
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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
Part L1B
Conservation of fuel and power in Existing Dwellings
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