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Physiology Test Question
When considering sound intensity levels, 0 decibel (dB) refers to:
the absence of sound.
a sound intensity level that is at the threshold of hearing for average human beings with normal hearing.
a sound intensity level that is equivalent to a pressure level of 0.000204 dyne/cm
(2.01 × 10
the standard sound reference level established by the Acoustical Society of America.
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Posted: Wednesday, November 11, 2015