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• Intensitas
r1 = R → I1 = I
r2 = 4R → I2 = ___?
Intensitas bunyi
I = P / (4π r²)
intensitas berbanding terbalik dengan kuadrat jaraknya.
Jika jaraknya dijadikan 4 kali srmula, intensitas akab menjadi (¼)² = 1/16 kali semula atai (1/16) I ← jwb
atau
I2 / I1 = r1² / r2²
I2 = (r1 / r2)² • I1
I2 = (R / 4R)² • I
I2 = (1/16) I ← jwb