Answer :
The difference is (80 dB - 40 dB) = 40 dB.
The sound is 40 dB louder outside.
Each 10 dB means 10 times more sound power.
40 dB louder means 10x10x10x10 times more sound power.
That's 10,000 times more sound power outside than inside.
The difference is (80 dB - 40 dB) = 40 dB.
The sound is 40 dB louder outside.
Each 10 dB means 10 times more sound power.
40 dB louder means 10x10x10x10 times more sound power.
That's 10,000 times more sound power outside than inside.