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Discussion :: Communication Systems

  1. Dolby system of noise reduction divides the total audio spectrum into

    2. A.
    8 frequency bands
    B.
    4 frequency bands
    C.
    2 frequency bands
    D.
    none of the above

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    Answer : Option B

    Explanation :

    Dolby A system divides the frequency in 4 bands viz.f < 80 Hz, 80 Hz < f < 2999 Hz, f > 3000 Hz, f > 9000 Hz.

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