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Say Joe Smith has a hearing loss of 27 dB HL at the frequency 1000 Hz;...

Say Joe Smith has a hearing loss of 27 dB HL at the frequency 1000 Hz; that is, to hear a sound Joe needs 27 dB more than the average person. The average person can just barely hear a sound intensity of 1.74×10-12 W/m2 (at 1000 Hz). What is the faintest intensity that Joe can detect (at 1000 Hz)?

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Answer #1

Hearing loss in dB = Io

loss = -27dB

Io = 1.74e-12

I = I_0 e^{-27/20}

Hence I = 0.45e-12 W/m2

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