I have been asked to produce a spreadsheet that calculates the following.
For every 3db reduced, the amount of audible noise falls 50%. So at 3db it's 50% remaining, at 6db it's 25% at 9db it's 12.5% and so on. Does abyone know how I would calculate the values inbetween the 3s (i.e. what would it be at 7db?)
Thanks
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