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Consider an FM broadcast that employs the pre-emphasis filter with frequency response.
For the network shown in the figure to act as a corresponding de-emphasis filter, the appropriate pair(s) of (?, ?) values is/are
  • a)
    R = 2 kΩ, C = 1 μF
  • b)
    R = 1 kΩ, C = 0.1 μF
  • c)
    R = 1 kΩ, C = 2 μF
  • d)
    R = 2 kΩ, C = 0.5 μF
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Consider an FM broadcast that employs the pre-emphasis filter with fr...
Given : Frequency response of pre-emphasis filter is,
The R-C circuit as shown below
Transfer function of the above R-C circuit will be
The given R-C circuit to act as de-emphasis filter
Thus, ω0 = 104 rad/sec only possible if we choose R = 1kΩ and C = 0.1μF from options.
Hence, the correct option is (B).
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Community Answer
Consider an FM broadcast that employs the pre-emphasis filter with fr...
Given : Frequency response of pre-emphasis filter is,
The R-C circuit as shown below
Transfer function of the above R-C circuit will be
The given R-C circuit to act as de-emphasis filter
Thus, ω0 = 104 rad/sec only possible if we choose R = 1kΩ and C = 0.1μF from options.
Hence, the correct option is (B).
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Consider an FM broadcast that employs the pre-emphasis filter with frequency response.For the network shown in the figure to act as a corresponding de-emphasis filter, the appropriate pair(s) of (?, ?) values is/area)R = 2 kΩ, C = 1 μFb)R = 1 kΩ, C = 0.1 μFc)R = 1 kΩ, C = 2 μFd)R = 2 kΩ, C = 0.5 μFCorrect answer is option 'B'. Can you explain this answer?
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