contestada

By how many decibels do you reduce the sound intensity level due to a source of sound if you triple your distance from it? assume that the waves expand spherically.

Respuesta :

AL2006

New sound intensity level after the move is

                          10 log (1/3²)

                       =  -20 log (3)

                       =  -20 (0.4771)  =   9.54 dB LOWER than before the move.

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