Question: A person has severe hearing loss that reduces the intensity in his inner ear by 40 dB. To compensate, a hearing aid can amplify the

A person has severe hearing loss that reduces the intensity in his inner ear by 40 dB. To compensate, a hearing aid can amplify the sound pressure amplitude by a certain factor to bring the intensity level back to the value for a healthy ear. What amplification factor is needed for this person?

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