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Discussion :: Communication Systems

  1. 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.

    2. A.
    0.5 Pa
    B.
    0.2 Pa
    C.
    0.1 Pa
    D.
    0.01 Pa

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    Answer : Option C

    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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