For Exercises 79-80, the formula
gives the loudness of sound L (in dB) based on the intensity of sound I (in W/m2). The value
is the minimal threshold for bearing for mid-frequency sounds. Hearing impairment is often measured according to the minimal sound level (in dB) detected by an individual for sounds at various frequencies. For one frequency, the table depicts the level of hearing impairment.
Category | Loudness (dB) |
---|---|
Mild |
|
Moderate |
|
Moderately Severe |
|
Severe |
|
Profound |
|
Determine the range that represents the intensity of sound that can be heard by an individual with severe hearing impairment.

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Chapter 4 Solutions
COLLEGE ALGEBRA
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