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The sound level produced by one singer is 73.7 dB. What would be the sound level...

The sound level produced by one singer is 73.7 dB. What would be the sound level produced by a chorus of 36 such singers (all singing at the same intensity at approximately the same distance as the original singer)? Answer in units of dB.

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Answer #1

Sound level produced by one singer = 1 = 73.7 dB

Sound intensity produced by one singer = I1

I1 = 2.344 x 10-5 W/m2

Sound intensity due to 36 singers = I2

I2 = 36I1

I2 = 36(2.344x10-5)

I2 = 8.438 x 10-4 W/m2

Sound level produced by 36 singers = 2

2 = 89.3 dB

Sound level produced by a chorus of 36 singers = 89.3 dB

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