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TI1 = 60 dB
r1 = 1 m
r2 = 100 m
Dit: TI2....?
TI2 = TI1 - 20 log r2/r1
TI2 = 60 - 20 log 100/1
TI2 = 60 - 20 log 100
TI2 = 60 - 20 log 10²
TI2 = 60 - 20.2 1
TI2 = 60 - 40
TI2 = 20 dB