Signal to noise ratio of microphone is defined as the ratio of output when the s

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Question
Signal to noise ratio of microphone is defined as the ratio of output when the sound pressure is __________ to the output in the absence of any sound signal.
Options
A. 0.5 Pa
B. 0.2 Pa
C. 0.1 Pa
D. 0.01 Pa

Correct Answer

0.1 Pa

Explanation

0.1 Pa (= 0.5 x 10^-4 W/m²) is taken as standard sound pressure for defining S/N ratio of microphones.

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