Reduction in loudness of the sound is expressed as:
dL = 10 log (I/I0)
For reduction of sound intensity, dL = -dB
You live on a busy street, but as a music lover, you want to reduce the traffic noise.
If you install special sound reflecting windows that reduce the sound intensity level by 20.0 dB, by what factor have you reduced the sound intensity?
If, instead, you reduce the intensity by half, what change (in dB) do you make in the sound intensity level?
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